Category: science

Math and physics books from Dover via Google Books (what I find interesting in math and physics, Aug. 2025)

I’ve recently discovered a bunch of math / physics Dover books via Google Books of all things. You can access previews of them based on the link below and also buy them. I like this because I have a tendency to splurge for Dover books only to find my math skills are too weak to make progress. I don’t mind, since I like giving money to Dover, but my bookshelves are too full and this seems like a good compromise. Here’s just some I found good:

  1. Mathematics of Classical and Quantum Physics
  2. Mathematics for Physicists
  3. Mathematical physics
  4. Classical mechanics
  5. Foundations and Fundamental Concepts of Mathematics

Also I found these good links, not Dover or Google Books necessarily, but worth checking out:

  1. Calculus and beginner calculus
  2. History of physics
  3. Principle of least action
  4. Lagrangian physics and why it is useful.

Venus if you will (What I find interesting in math and science, May 2025)

 

Venus

Here’s a number of pieces I’ve gathered in the last few months related to science and math that I found worth sharing. A few of them require deeper knowledge on the topic, but many of them are suitable for anyone to read.

in the area of space and astronomy:

Moving on to biology:

Emmy Noether

Regarding mathematics, physics and more:

(Photos – Venus, seen by NASA’s Mariner 10 spacecraft in 1974.Credit: NASA and Emmy Noether Credit: Kristina Armitage/Quanta Magazine)

Space is big. This piece on Space isn’t

Space news comes fast and furious these days. There’s so much exploration going on, it can be hard to keep track. For example, ESA has approved a search for the gravitational echoes of the big bang. Countries that you might not expect, like Mexico, are going to the moon.  Japan is already there. In the USA, here’s some of the many things NASA is up to including going to the moon. Mind you, not everything is going well with the American space program.

Privately, here’s what Jeff Bezos’s Blue Origin is doing. (Here’s more on that.) Not to be outdone, this is some of what SpaceX is trying to accomplish.

Besides the engineering problems of exploring space, there’s also the human problem. For example, can astronauts deal with the isolation of Mars? Space is hard on astronauts physically as well as mentally, as that piece shows.

Not news, but here’s some more good space articles. This is a good piece on the early universe: it’s bananas. 🙂 This, on gamma ray bursts, caught my eye. As did the milky way photographer of the year (shown at the top). Finally, here’s a good story on Jean Pierre Luminet (the man in the photo), who did some first work on black hole imagery.

Race to the moon! (What I find interesting in math and science, November 2023)

Space: Well there has been plenty of space missions in the last while.

India has made great progress with their space missions, including successfully landing on the moon. The New Times has a piece on their moon launch here. It’s an exciting development! You can read more on it here and here. And India is not just going to the moon: they have mission going to the center of the solar system. Great to see all this activity.

Unlike India, Russia has been less successful, with their spaceship crashing on the moon. More on that, here. Space is hard.

Meanwhile,  Japan is aspiring to be doing work on the moon, too. More on the all the participants in the moon race here.

As for private space exploration, the Times has a piece on an alternative group to SpaceX that are making progress here. Good: we need an alternative to Musk’s company. Speaking of alternatives, here’s more on  Virgin Galatic’s recent progress. And this asks the question: How long will Jeff Bezos continue to subsidize his New Shepard rocket? Maybe if NASA goes with this new way of doing  moon missions with his Blue Origin organization. 

In other space news, here’s something on the new crew for the space station. This is a new theory on galaxy mergers that could shed light on how galaxies evolve.

Other things on space that I loved was this piece:  Our Galaxy Is Home to Trillions of Worlds Gone Rogue. Also this dazzling view of the Milky Way from southern Africa. I love this too:  Microsoft has an introduction to Python programming by taking on assignments inspired by NASA scientists to prepare you for a career in space exploration. A great collaboration.

Here’s some less than loveable space story I read. For instance, this is bad:  Space junk is on the rise, and no one is in charge of cleaning it up. More on that, here. Also not good: what a long term mission in space does to the human body.

Physics: this is a good explainer on quantum entanglement. Relatedly, if you thought quantum mechanics was weird , check out entangled time.

Here’s something on a study combining continuum mechanics with Einstein’s field equations. Worthwhile.

last but not least, if you want to learn or relearn physics, then head over to Susan Rigetti (nee Fowler)’s great site, here.

Math: three good math pieces: 1) a good introduction on lagrangian-mechanics 2) something I liked on Multivariate calculus 3) Also this on mutlivarable calculus.

Biology: I thought this, on our golden age of medicine was good. As was this piece on newly detailed nerve links between brain and other organs  and how it shapes thoughts and memories.

How to use the universe as an instrument to do science experiments

If you’ve been reading the news lately, you may have heard about NANOgrav and the work they were doing. If you missed it or forgot:

Scientists have observed for the first time the faint ripples caused by the motion of black holes that are gently stretching and squeezing everything in the universe.

They reported Wednesday that they were able to “hear” what are called low-frequency gravitational waves—changes in the fabric of the universe that are created by huge objects moving around and colliding in space.

How did they do that? Well:

No instruments on Earth could capture the ripples from these giants. So “we had to build a detector that was roughly the size of the galaxy,” said NANOGrav researcher Michael Lam of the SETI Institute.

The results released this week included 15 years of data from NANOGrav, which has been using telescopes across North America to search for the waves. Other teams of gravitational wave hunters around the world also published studies, including in Europe, India, China and Australia.

The scientists pointed telescopes at dead stars called pulsars, which send out flashes of radio waves as they spin around in space like lighthouses.

These bursts are so regular that scientists know exactly when the radio waves are supposed to arrive on our planet—”like a perfectly regular clock ticking away far out in space,” said NANOGrav member Sarah Vigeland, an astrophysicist at the University of Wisconsin-Milwaukee. But as gravitational waves warp the fabric of spacetime, they actually change the distance between Earth and these pulsars, throwing off that steady beat.

By analyzing tiny changes in the ticking rate across different pulsars—with some pulses coming slightly early and others coming late—scientists could tell that gravitational waves were passing through.

The NANOGrav team monitored 68 pulsars across the sky using the Green Bank Telescope in West Virginia, the Arecibo telescope in Puerto Rico and the Very Large Array in New Mexico. Other teams found similar evidence from dozens of other pulsars, monitored with telescopes across the globe.

I think it’s great science. You can read more about it here (and it’s where the quotes above come from): Scientists have finally ‘heard’ the chorus of gravitational waves that ripple through the universe at phys.org.

Did you know this is not the first time scientists have used distant objects in space to do science? Indeed, as far back as 1676, Ole Rømer used eclipses of the Jovian moon Io to determine just how fast light moves. It was a brilliant experiment that you can read about, here.

Science is as a much a creative process as it is an analytical process, and I think it is brilliantly creative to use the universe as an instrument to add to our scientific knowledge.

P.S. you can actually measure the speed of light using a chocolate bar and a microwave. Really! See this fun video to see how:

Let us go to Enceladus! (What I find interesting in math and science, July 2023)


As always, there’s lots of exciting science things happening! The big news recently was the announcement by a group of science organizations, NANOGrav, about the existence of gravitational waves splashing, so to speak, all across the universe. You can read more about it, here. It’s a big friggin’ deal.

Space: Space exploration in general remains exciting overall. Part of that has to do with the incredible amount of missions on the go! China is a nation in a hurry when it comes to space exploration. Out on Mars, the rover they sent there has found signs of recent water in sand dunes. Closer to home, they’re doing lunar research with the Chang’e project. On top of that, they’ve successfully launched their latest mission to the Tiangong space station on Tuesday. Incredible. And good to see.

Not all space news is good. A private Japanese moon lander went into free-fall while trying to land on the lunar surface recently due to a software issue and a last-minute switch in the touchdown location.  More on that, here. I have no doubt we will see successful Japanese missions soon and on the regular.

In other news, the UAE is sending a mission to explore the debris field between Mars and Jupiter. More on that, here.

Of course American space work is ongoing. The  James Webb Space Telescope (JWST) spotted a towering plume of water vapor more than 6,000 miles long—roughly the distance from the U.S. to Japan—spewing from the surface of Saturn’s moon, Enceladus.  More on that, here.

Seeing all this space exploration, it may be time to make these  NASA visions of the future posters for real. (An example is the one for Enceladus, above.)

The billionaires are back at it too. Jeff Bezos’ rocket company is taking astronauts to the moon in 2029. Don’t screw it up, Jeff. More here. Not to be left out, Branson’s Virgin Galactic is going back to space after a 2 year hiatus, says this.

If you are feeling left out, know that you can get in on the action,  thanks to a new program launched by astronomers at the University of Arizona Lunar and Planetary Laboratory. You can help science by reading this and getting involved. 

Don’t hesitate. After all,we are all one GRB from being fried out of existence. In fact it almost happened.

Physics:  It was fun coming across the classic E & M text by Purcell and Morin. A great text book I had in university. For quantum fans, this is a good piece on how Einstein Podolsky Rosen paradox scales up.

Wanting to do your own physics experiment? Here’s how to demo special relativity for a $100 or less. Really! More on the science behind it, here and here. Muons are cool and you can be too if you do that.

Miscellany: I thought this on lagrangian mechanics for beginners was good. Relatedly, here’s something on Euler Lagrange.

Think you can’t do math? Read this: are all brains good at math?

This is some weird science: when flies see the corpses of other flies, they get depressed and die soon. Really!

This was a good piece on cancer and the nervous system. I liked how you can make better decisions by using science.

Also cool: what plants are saying about us.

(Shown above, the  NASA artemis III spacesuit. More on it, here)

Trips to Uranus! Roundworms with the munchies! And much more! :) (What I find interesting in math and science, May 2023)

I continue to find interesting things in the area of astronomy, math, physics and more. Here are some of the best of them. I hope you like them! (Yes, there will be stoned earthworms, and something about Uranus. :))

Space missions and exploration: I am excited to see so many different countries sending space missions to a wide range of areas and planning more. Europe has sent the mission  Juice to go explore Jupiter.  And yes, NASA wants to explore Uranus. (Although here’s why that won’t happen until the 2040s. Hey, it’s far.)  Japan is trying to get in the game, though their rocket had some recent failure.

Venus is a tough place to explore, though not impossible. Here’s a good piece on how it could be explored using  balloons. In the meantime, NASA is using data from  Magellan to reveal volcanic activity on that hot planet. The more knowledge, the more likely a future visit will be successful.

As for other countries, I am glad that Russia will continue to use the international space station for some time. Let’s hope that doesn’t stop. As for my home country, Canada is working on it’s first ever canadian lunar rover! (see below)

Elsewhere in space: while we humans go out into space, space also comes to us. For example:  Asteroid 2023 BU is a space rock that passes closer to us than some satellites. Yikes.

And it’s not the only rock. Above is a photo of another large asteroid passing by.

As for other space objects, here’s two good pieces on black holes:  scientists discover ultramassive black hole 30bn times the mass of the sun plus this typing black holes and dark matter.

This is cool: you can be an amateur astronomer and help the pros. Check it out. Also cool is this piece on how John Glenns basic camera forced NASA to rethink space missions. Plus, here’s a good piece on using  AI in astronomy.

Mind blowing physics: If you are interested in quantum physics, read this: four common misconceptions about quantum physics. This is a good reminder that everything in physics is made up, and that’s ok. Oh, and physicists are starting to think space and time are illusions.

Math: What do you get when you cross math with the AI? Some excellent illustrations, like the one at the top of this post! More here! This is also excellent: Ideas of Calculus in Islam and India. I enjoyed finding out that you can use the lagrangian function in managerial economics. Neat! If you want to learn more math, I highly recommend these No bullshit guides.

Can non-mathematicians learn and appreciate math? This piece looks at some books on  math education that try to do that. The jury is out, though I think it’s possible.

Finally: this is a good reminder that I don’t think we  really understand the nervous system, if you can have memories without brains. Speaking of lower lifeforms:  Roundworms on weed get the muchines.

I hope more people read this on Chien-Shiung Wu and the little known origin story behind the 2022 nobel prize in physics. 

And what’s this?

Just an introduction to the TV show, The National. Back then letters like that indicated The Future. I had to find a place to show them on my blog! 🙂

On the empathy of rats


I am fascinated by empathy, so I was interested to read about these experiments done some time ago concerning empathy and rats:

  1.  helping your fellow rat rodents show empathy driven behavior
  2. social experience leads empathetic pro social behavior rats

I highly recommend them if you are interested in the topic. Thoughts I had after reading them:

  • The experiments do well to show that empathy is not a quality limited to humans. But of course it makes sense it is a quality that many species should have. After all, empathy is a very good way to help everything survive. It’s not surprising, therefore, that other mammals have it.
  • There is more to survival than eating. Rats in these experiments chose to be helpful over eating chocolate. Many humans I know of could learn something from these rats.
  • Empathy does not seem to be something distributed willy nilly. There is some selectivity when it comes to empathy in the rats, just like there is between humans. That also makes sense.
  • We know so little of the world, never mind ourselves.

Good experiments. Good reads.

Remember the billionaire space race?

Remember the billionaire space race? In case you forgot:

The billionaire space race is the rivalry among entrepreneurs who have entered the space industry from other industries – particularly computing. This private industry space race of the 21st century involves sending rockets to the ionosphere (mesosphere and thermosphere), orbital launch rockets, and suborbital tourist spaceflights. Today, the billionaire space race is primarily between three billionaires and their respective firms: Jeff Bezos’s Blue Origin, which is seeking to establish an industrial base in space.Richard Branson’s Virgin Group (through Virgin Galactic and Virgin Orbit), which seeks to dominate space tourism, low-cost small orbital launch vehicles, and intercontinental sub-orbital spaceflight. Elon Musk’s SpaceX, which seeks to colonize Mars as well as provide satellite-based internet through its Starlink project.

Well it seems one of the billionaires is bowing out. Branson’s is slashing 85% of his workforce at Virgin Orbit and it seems it is ceasing operation for the foreseeable future. Virgin Orbit has exploded in space…crashed to earth…pick your metaphor.

In some ways the billionaire space race was peak billionaire. I suspect Jeff Bezos was looking for something to do and saw Musk as a challenge, Musk was still somewhat respected and the leader, and Branson was….well, just being Branson.

Now it’s down to two. I was always happy for Musk’s SpaceX forcing NASA to change for the better. In my mind, the more missions to space, the better. But the folly of Branson was due to end. And now it has.

All the exciting things happening in space in 2023. Read this and mark your calendar!

If you interested in space as I am, then get out your calendar and mark down 2023’s top astronomical events so you don’t miss any of them. As WaPo says, “With opportunities to wish upon shooting stars, and to see a Super Blue Moon and the Ring of Fire eclipse, 2023 is bursting” with things to keep an eye out for.

One thing in particular is lunar exploration. First up is, NASA’s Artemis mission. As the Verge explains, an Orion spacecraft that is part of that mission has recently returned and safely splashed down into the Pacific Ocean after a recent trip. A good start! And Artemis promises great things in the future. Not only is it part of NASA’s plan to return visits to the Moon, it’s part of NASA’s plan to never leave. The dream of space colonization could become a reality.

And it’s not just the Americans that are interested in going and staying on the moon. The Chinese are too. Who knows what will take place in the next 10-20 years? It’s all very promising.

With all this space travel, this should keep not just government agencies busy, but private companies too. Case in point: After doubling launch record in 2022, can SpaceX take another step up in 2023?

Heck, even you can get involved. Don’t believe me? Then read this: NASA Wants You to Help Study Planets Around Other Stars.

Meanwhile back on Earth, there’s a lot of interest in tracking asteroids coming close to us. NASA and others are getting a handle on tracking the big ones. The smaller ones are much harder. Here’s a piece on one such asteroid 2023bu that recently blew by us. (See the arrow in the photo above pointing to it.)

For my last space piece I want to highlight, this is a worthwhile read on why some people have an issue with the latest space telescope being named after James Webb. You can find many such pieces arguing back and forth on the matter. I think both sides have worthwhile points. I’ll let you make up your own mind.

Not space related, but fun is this piece on how bees actually play — yes play! — with little wooden balls!

Finally, for people interested in physics, this is a good piece discussing where it is headed. One such. direction is the study of dark matter and dark energy.  Here’s a good piece on a dark energy experiment that recently won a big prize. We need more such experiments if we are ever to solve the mystery of dark energy and matter.

Love and rockets (things I find interesting in math and science, Dec. 2022)

In the last few months my math and science reading has mostly been about space, with some smattering of other things. NASA in particular has been the focus. First up is a piece on the DART Mission which smashed into an asteroid and altered it’s path. No small feat, that. In other big feats, they are still in the planning stages of a a balloon mission to Venus . Given that landing on Venus results in a spacecraft being destroyed, a visit that stays in that planet’s atmosphere may be the only way for it to succeed.

One such mission that should definitely succeed is Artemis, NASA’s project to visit (revisit?) the moon, Here is the NYTimes on it. Relatedly, here’s the Atlantic with a piece on the the 50th anniversary of Apollo. We are clearly due for a return trip. I wonder if it will affect the new astronauts as much as it did William Shatner after his quick trip into space with Jeff Bezos? I suspect they will be more prepared than the TV astronaut was.

Speaking of space, here’s cosmologist Katie Mack talking about scenarios for the end of the universe. I got her book last Christmas and loved it. Another book on physics I want to read is by Sabine Hossenfelder . She’s a no nonsense type of scientist, which I think is good. For while I agree that when it comes to science and especially physics, there is no escaping metaphysics, I also agree with those who say that physicists sometimes get carried away with some of their loftier or wild ideas.

Then again, some of those ideas resulted in this year’s The Nobel Prize . And it had led to physicists creating “the Smallest Crummiest Wormhole You Can Imagine”. These wild ideas really makes you think. If you think too hard, though, you will likely get tired. The Guardian has a good explanation on why thinking tires your brain .

Finally, if you are interested in learning more about physics, I recommend you check out the web site DrPhysicsA. It’s good stuff. And you want to learn more about math, you can visit the blog of one of the best mathematicians in the world. Here is is writing on odds. Also good!

On sleeping spiders, Marie Curie’s scandalous affairs, and other things I find interesting in math and science, Oct. 2022


I haven’t been doing as much reading in math and science these days, but what I have found and listed here I thought interesting or worthwhile:

What’s new in space? Lots!

While space is very old, some things happening in space are very new. For example, the James Webb Telescope. After much planning, it was recently made operational and started to send back amazing photos (like the one above). You can see more of them at Colossal and the official site of the James Webb telescope. To give you a sense of how great the new telescope is, here’s a piece showing side by side images of the Hubble telescope with those from the James Webb . A dramatic improvement (and the Hubble images were still great).

In other good news, NASA is going back to the moon. I am very excited about this. In not so good news, Russia says it will quit the International Space Station after 2024. Let’s hope the Space Station can survive this form of fracture.

P.S. Not news at all, but here’s a “fun” study of asteroids hitting earth. Hey, it’s space related! 🙂

(Image: link to image in Collossal)

 

 

How math can help you flip burgers (or what I find interesting in math and sciences, July 2022)

Last week  was a big one for math, with the Fields Medals being announced. As The New York Times explained:

Four mathematicians whose research covers areas like prime numbers and the packing of eight-dimensional spheres are the latest recipients of the Fields Medals, which are given out once every four years to some of the most accomplished mathematicians under the age of 40.

That piece in the Times goes in depth on each of the winners and is worthwhile.

On a lighter side, here’s a story on how Mathematics can help solve this conundrum:

Should you flip a burger once or lots of times? A mathematician has calculated an answer.

. If you love math and burgers, it’s a must read. 🙂

Other good things I’ve been reading / checking out:

On Godel and Game Theory (what I find interesting in math and sciences, May 2022)

Math education: here’s some good pieces on that topic. First up, Susan Fowler (now Rigetti) on how you can learn more math. One way to learn is to see how others do it. Here’s Fields medalist Tim Gowers working through math problems on YouTube. Also this is a good resource on YouTube: math channel.

Speaking of learning math, here’s a piece on how to fix math class.

Math theory: For fans of game theory: Game theory and Cuban Missile crisis. Here’s two more good theory pieces, one on Godel’s Incompleteness Theorems and one on Fermat’s last theorem.

Philosophy: Here’s two good pieces on math and philosophy: How Julia Robinson helped define the limits of mathematical knowledge and another on how math and philosophy need each other.

Physics and space: this is cool, Visualizing Black Holes with General Relativistic Ray Tracing. So is this: SpaceX’s Starship and NASA’s SLS Could Supercharge Space Science. This is odd,  NASA Will Test Gigantic Centrifuge for Hurling Objects Into Space. This is fun, measuring the earth using the traceroute command! This is fascinating, what I learned as a hired consultant to autodidact physicists.

Brain: here’s two good pieces on the brain. First, Your brain expands and shrinks over time. Second, Deep sleep drives brain fluid oscillations.

Here’s how to know when to quit, using math.


Knowing when to quit is difficult. Fortunately, there is science and math to help us, as this article in plus.maths.org explains:

Knowing when to quit is one of life’s great dilemmas, whether to persist in the face of diminishing rewards, or to quit now in the hope of finding richer rewards further afield. For every gold mine, eventually there comes a point when the amount of gold extracted can no longer justify the cost of keeping the mine open; once that point has been reached, it is time to quit, and start looking for a new mine.

Similarly, for a bird feeding on caterpillars in a bush, there comes a point when the calories gained can no longer justify the energy expended in searching for more caterpillars; once that point has been reached, it is time to quit, and move to another bush. And, for a honeybee, there comes a time when the weight of pollen collected can no longer justify the energy required to carry that pollen; at that point it is time to quit collecting, and fly back to the hive.

Fortunately, there is a mathematical recipe, embodied in the marginal value theorem (developed by the American ecologist Eric Charnov in 1976), which specifies when to quit in order to maximise rewards. More importantly, the marginal value theorem has an enormously wide range of applications, from its origins in optimal foraging theory to how brains process information. In essence, the marginal value theorem provides a general strategy for maximising the bang per buck, irrespective of the nature of the bang and the buck under consideration.

Wait you say: it’s Friday afternoon! You know when to quit (at least for this week). Ok, that works too. But if you need more general guidance, read the article.

On Emmy Noether

Recently the Perimeter Institute held a contest called “Physics Frenzy – Battle of the Equations Championship”. I was sure James Maxwell and his equations were going to win. It turns out he lost (in the final, mind you) to Emmy Noether and her theorem!

Afterwards I wondered if people knew much about her. Besides being arguably the greatest woman mathematician, she was a significant contributor to math and physics in the 20th century. You can read a bio of her here.

Fun aside, the good people at the Perimeter Institute have a series of initiatives centered around Emmy Noether. They also have material where you could learn more about her.  Read about them, here.

 

Great photos from NASA/ESA’s Hubble telescope and the ESA mission to the sun

While people are getting excited about the James Webb Space Telescope now it is in position to take photos, there is still some great work being done with other missions that NASA and ESA have on the go. Case in point, the Hubble telescope. If you click on that link, you can see photos that it recently took of the star Earendel. As they explain:

With this observation, the NASA/ESA Hubble Space Telescope has established an extraordinary new benchmark: detecting the light of a star that existed within the first billion years after the Universe’s birth in the Big Bang (at a redshift of 6.2) — the most distant individual star ever seen. This sets up a major target for the NASA/ESA/CSA James Webb Space Telescope in its first year.

Fantastic!

Meanwhile, closer to home, we have the ESA mission zooming into the Sun with Solar Orbiter and sending back wonderful photos and data along the way. Click the link to get some amazing images of the sun.

It’s all thrilling!

What I find interesting in math and sciences, March 2022

Here are two pieces on physics that really are also about philosophy. First, in the realm of the very small: On quantum theory and reality. Second, in the realm of the very large: On space and time.

Of all the sciences, those having to do with space are the ones I enjoy reading about the most. I got interested in Lagrange points due to the James Webb Telescope. Here’s something on them: Lagrange points.

I thought this was a good reminder to me of any images we get regarding black holes (something I find fascinating): The Images of Black Holes are Not Photos.

COVID has made me think more and more about biology these days. That’s a good thing. It has me reading things like this: Disease moves like ripples on a pond.

One of my fundamental beliefs is that we don’t think with our brains but that we think with our entire bodies. This makes me interested in anything that makes that connection. This is such a piece: Our nervous system is connected to our organs and shapes our thoughts and our memories.

There was some discussion on racism in mathematics over the last while. I think this is a good discussion to have. Here are two pieces on the topic: Racism in our curriculums isn’t limited to history. It’s in math too and Opinion: Is math racist? Wrong question.

I continue to learn math in an amateurish way. I enjoyed these sources of information on it: Guide to Tensors and The Best Math Books and Statistics Books.

(Photo by Roman Mager on Unsplash)

When a scientific experiment is beautiful

Can a scientific experiment be beautiful? Milena Ivanova makes the case that it can, here: When is a scientific experiment like a beautiful work of art?

I’m glad she mentioned the Michelson Morley experiment because I think it is a fine example of elegance and beauty. You might not think it, looking at it in the image above. Read the article: you might be convinced after reading that it is.

 

How would you like a cube of titanium, or copper, or even uranium? With the Luciteria web site, you can!

How cool is this Luciteria web site? Well if you are a geek like me, very cool indeed. Among other things they sell are cubes of each of the elements in the periodic table. As they say:

Cubes of each of the elements are our most popular sellers. And it’s not hard to see why. Precision machined and labeled each one is a self-contained ambassador of the periodic table. From the small cubic centimeter up to the hefty 5cm these cubes practically define the ideal desktop gadget for anyone who loves to nerd out on science. So get one as a conversation starter, a few as a clever means to spell out a name or phrase or go for broke and get as many as possible to make your own “real life” periodic table!

Some of them, like copper above, are pretty harmless and common. Others, like the uranium cube below, not so much.
I think these would be a great gift for anyone into science, or for teachers teaching the elements.

My first thought when I went there was that they would only have a few of the elements, but no, they have pretty much all of them. (With some reasonable exceptions.) Very much worth checking out.

The New Space Race!

I was a young boy for the first space race in the 1960s and 1970s. After that the pace of space exploration seem to decrease. Recently, though, that pace has picked up, as the Times shows, here: Big Rockets, Massive Asteroids and More Space Highlights for 2022 – The New York Times.

So much happened in 2021, and 2022 seems to be just as busy. We have the James Webb Space Telescope,  China building the Tiangong Space Station, NASA’s attempt to deflect an asteroid and much more. If you go to that article, you can subscribe to The Times Space and Astronomy Calendar and keep up to date of everything going on.

Sure billionaires jaunting into space grabs our attention, but there is so much more going on than that, and unlike much in the news, space exploration is fun and exciting to follow. Join the new Space Race!

On Antarctica once being lush and vibrant

I have to say, there is lots of cool information in this piece, Antarctica’s fossil rainforest is a warning about climate change – Vox. I especially liked reading about how the scientists did the experiment under difficult conditions.

The only downside is imagining what the rest of the world would be like for the Antarctica to be this warm. It must have been a hellscape.

That article is also a good reminder that Earth can go on even if becomes unlivable for humans. If the Antarctic is to become a tropical paradise, it should not be because of what we have done.

 

13 good links concerning the mind and mental health November, 2021

A sign tha says use your brain
Here’s 13 good links on the mind and mental health I’ve gathered over the last few months. Most of them I’ve read at least twice.

  1. An interesting idea:  Can a short behavioural boot camp really grind anxiety to dust?
  2. A good way to think about feelings, from Austin Kleon:  What to do with your feelings.
  3. I can’t vouch for this, but it is interesting:  How to Microdose Weed for a Super-efficient Subtle High.
  4. On  Loneliness: coping with the gap where friends used to be.
  5. A thoughtful study on loss and grief:  Nothing Could Prepare Me for Watching My Wife Slip Away.
  6. This Theory Explains How Consciousness Evolved. Worth reading.
  7. Also worth reading:  Why We Choose to Suffer
  8. I found this really thought provoking:  What if emotions aren’t unniversal but specific to each culture?
  9. I didn’t really agree with this, but it is worth reading:  The Difference Between Hope and Optimism
  10. This was very sad:  LISA LUCAS: All the love in the world couldn’t save our son from drugs.
  11. This is good to read after the one above, I think:   An Artist Describes His Brother’s Struggle.
  12. This is a great way to approach things:  Everything is a Practice 
  13. And finally:  The Empty Brain 

(Photo by Jesse Martini on Unsplash)

On stopping the next Chelyabinsk Meteor

If you think of meteors hitting the Earth, you might be thinking of ones like the Chicxulub impactor that killed off the dinosaurs. Good news: scientists have been tracking meteors of that size and we are safe for at least the next few centuries.

But what about smaller ones, like the one that hit Chelyabinsk and caused significant damage? Those we may not be so safe from. Indeed, if they hit a major city, the destruction could be catastrophic.

That’s why NASA has launched the DART mission. It’s goal is to see if it could stop an asteroid and prevent an asteroid apocalypse. That piece in Scientific American on what is involved is fascinating. It’s not merely a matter of putting a major explosive on an asteroid and blowing it to bits. Go read the article and you’ll see what I mean.

For more on the. Chelyabinsk Meteor, click here.

On the flaws of SpaceX’s Starlink technology

I’m not a fan of SpaceX’s Starlink technology. It’s ruining space in a number of ways, like this. I thought its one saving grace would be that it at least provides great Internet service. Yet according to this review in The Verge, it doesn’t even do that! Sad. Garbage in the sky, garbage on the ground.

Here’s hoping it gets better. And that someone finds a way to collect all the garbage circling the earth and do something with it.

On exploring Jupiter’s Red Spot

Despite having telescopes being able to observe it, there’s still much to learn about the Great Red Spot of Jupiter. To do that, NASA sent a space craft to the giant planet to learn more about it. The story of that can be found here: Jupiter’s Great Red Spot Is Surprisingly Deep in Scientific American. It’s one of the many awesome things NASA has on the go in our solar system and beyond.

 

This is fascinating: maybe we can’t even land on Mars, never mind go there


It’s well known that Mars is going to be difficult for humans to get there. If you are like me, I figured once we got there, then we land just like we land on Earth or the moon. But what if we can’t? This article fom BBC Sky at Night Magazine raises a number of difficulties that arise from dropping things from space onto the Red Planet. Things that seem to be recently considered.

Going to Mars is not going to be a matter of jumping in a big rocket ship and blasting into space. It’s going to take a lot of time to figure everything out, including landing there. Read that piece and see why.

(Photo by Mike Kiev on Unsplash )

5 or 10 thoughts on the billionaire space race

Image of Jeff Bezos blasting into space

Jeff Bezos blasted into space today with three other people. Everyone, and I mean everyone, has an opinion about it. Even Variety magazine did. (That’s worth a read BTW).  So fwiw, here’s 1o things I thought about it:

  1. It’s good to see more interest in space in general. NASA and other space agencies do plenty in terms of space exploration, but often it is overlooked by people. Suddenly — for better or worse — people are talking about space again.
  2. It’s good to see money being spent on space travel. NASA has suffered for years with cutbacks. Decades. Here’s to more money being effectively used in space.
  3. These flights of Branson and Bezos are small steps in terms of space travel.  They are miles behind SpaceX even, never mind NASA or other space agencies. As we like to say in business: it’s a good start (implying there is a long way to go).
  4. Small steps can lead to big steps if they continue to pursue this and pour money into it. That’s a big if. Like any space exploration, it is hard to continue to make people interested in it after it starts to seem repetitive. They might find it much harder to get space tourists to pay a small fortune their 10th or 15th flight. Never mind after the first person dies (and someone will).
  5. Even if everything goes well, it could still fail  in the longer run. The Concorde failed and it was much simpler technology than this stuff. Not everything that is the best and fastest gets to succeed.
  6. I can’t see the ROI on space travel. Musk and SpaceX can get away with it because they have a client with the money to spend on it (i.e. NASA). Not sure if Bezos can wrestle some of that business away. Then again, perhaps there’s a global market for these services.
  7. I think there would have been a much more positive reaction if it wasn’t Bezos or Branson leading these endeavours. Give Musk credit: he lets the real astronauts do the work. Plus none of these men are inspiring to most people. They aren’t John Glenn or Neil Armstrong: they are billionaires. Bezos was at least smart enough to Wally Funk with him: that was a good distraction from the other members on his team.
  8. It will remain to be seen if they can catch up to Musk, or if they are even interested. Musk can act the fool, but he seems driven to push private space exploration to the limits. I can see Branson dropping out soon once some other thing comes along. Bezos is a bit of a mystery to me.
  9. People are criticizing them for spending money on space rather than here on earth, but Bill Gates spends his fortune on such things and he is criticized mightly for it. It’s a no win in terms of spending your money. They all should pay more taxes. (Although a lot of tax money in the US goes into the military budget. That’s a different but related issue.)
  10. Here’s to more inspiring people going to space soon, and to more inspiring space travel. Let’s hope this leads to that.

(Image: link from the Variety article)

Solutions to the Fermi Paradox?

Fermi’s Paradox in a nutshell:

‘We’d estimate that there are 1 billion Earth-like planets and 100,000 intelligent civilizations in our galaxy.’ So there must be aliens. Why haven’t we heard from them?

If this fascinates you, check out this list of solutions to the Fermi Paradox.

You may not be convinced there is an answer to this problem, but for some, they will be.

(Image of Enrico Fermi from Wikimedia)

Sleep. Not just a brain thing


This is a fascinating article that illustrates that sleeping is a more complex activity than we know: Sleep Evolved Before Brains. Hydras Are Living Proof. | Quanta Magazine

I’ve always associated sleep with something our brains need to have in order to survive. (Sleep deprivation is one proof of that.) But I have been won over to the idea that sleep is a more fundamental property of living things, brain or no brain.

Read the article: I think you’ll find it fascinating too.

(Photo by Florian Olivo on Unsplash )

Three great pieces on Venus, the Milky Way, and black hole visualization

This piece on the Milky Way photographer of the year is filled with amazing photos of…well, you can guess. (One of the photos is above).
This is a good piece on the efforts to study Venus. It won’t be easy to do, but it will be rewarding.
Finally, this piece on how black holes are visualized is excellent.

What I find interesting: physics


Last week I talked about not learning music being a regret of mine. The other regret I have is not learning physics. I dabble in it, but it’s a struggle.

If you are interested in learning physics, read this piece from my friend Susan. I got to know her because of it: So You Want to Learn Physics… — Susan Fowler. She now has a new version of it at a new site! You can find it here.

Other friends I have who do know physics tell me the thing to learn is Lagrangian mechanics. Here’s a good guide to it: Lagrangian Mechanics For Dummies: An Intuitive Introduction – Profound Physics

Another way to learn physics is via Youtube. This guy has an amazing YouTube channel on Physics: DrPhysicsA – YouTube Worthwhile.

Of course you can also read text books on it. I think Dover Books are among the best for this. For example, this: Classical Mechanics: 2nd Edition: Corben, H.C., Stehle, Philip: 9780486680637: Gateway – Amazon.ca

Still another way is via experimentation. For example:  build your own particle detector | symmetry magazine

(Speaking of experimentation, here’s a great piece on how the LIGO Observatory detects gravitational waves)

A problem I have always had with physics is how did physics get to where it got to, and why are certain areas more prominent than others. To better understand that, it’s good to look backwards at how physics was done in previous time. For example, this article on Ole Roemer: Ole Roemer Profile: First to Measure the Speed of Light | AMNH. We all know light has a specific speed but back then some thought light was instantaneous. But Roemer came up with a method to show light had an actual speed and it could be measured. Likewise, here is the great physicist James Maxwell with a book on how scientists developed their idea of what heat is and how it works: Theory of Heat – James Clerk Maxwell – Google Books.

Finally, a good way to learn physics is read good articles on it. Here’s a collection of some:

(Photo by Roman Mager on Unsplash)

The worst technology failures of 2020, including one not considered a failure but could be the worst of all

This piece (Worst technology failures of 2020) by MIT Technology Review has a list of the bigger technology failures of 2020. Some of them, like Quibi and facial recognition abuses, are well known.

One listed here may be the greatest technology failure of them all, though for many it is not considered a failure at all. That is the unregulated pollution of space with tiny satellites. As the article states:

Since prehistory, humankind has looked upwards for awe and inspiration, to imagine what forces created the world—and which might end it. But now, that cosmic view is being contaminated with the reflections of thousands of inexpensive commercial satellites put aloft by companies like Amazon, OneWeb, and SpaceX, who want to cover the Earth with internet connections. Sixty satellites can swarm out of a single rocket.

To see what I mean, check out this picture from the article:

Telescope views from earth are being marred with the light of all these satellites. This is today’s problem. Tomorrow’s problem is going to be all the other pollution, light or otherwise, which is going to result from the rush to put things in space. Science is getting wrecked by this.

Already astronomers are thinking of putting telescopes on the dark side of the moon to escape such problems. But without regulation, who knows if even this will be successful? To hear Elon Musk yammer on, he’s just going to be throwing who knows what into space. He’s already launched one of his stupid cars into the atmosphere. Hardly the guy you can trust to be responsible when it comes to deciding what should go into space.

Here’s hoping that in the rush to do more and more space development (a good thing)  there is also an effort to make sure it is well thought and regulated (also a good thing).

How complicated is the brain?

The brain is a complex organ. Even in something as small as a fruit fly (whose brains are mapped in the image above). Yet…

Scientists from Google and the Janelia Research Campus in Virginia have published the largest high-resolution map of brain connectivity in any animal, sharing a 3D model that traces 20 million synapses connecting some 25,000 neurons in the brain of a fruit fly.

The model is a milestone in the field of connectomics, which uses detailed imaging techniques to map the physical pathways of the brain. This map, known as a “connectome,” covers roughly one-third of the fruit fly’s brain. To date, only a single organism, the roundworm C. elegans, has had its brain completely mapped in this way.

It’s a fascinating story of both biology and computer science. (It takes a lot of computing power to do this). For more details, see: Google publishes largest ever high-resolution map of brain connectivity – The Verge

Great insights on mathematics you should read about even if you don’t think you want to


I suspect many people will not want to read this article containing great insights on mathematics by Steve Strogatz. That’s a shame, because it is really approachable by anyone of any mathematical ability. It’s especially good for people with limited math skills, because he does a good job of showing the value and benefits to be gained from thinking mathematically. I highly recommend it if you read it.

For example, one thing I found fascinating is his discussion of the Prisoner’s Dilemma by comparing it to religion. You should read it, but in short, it’s been shown that one approach to succeeding in playing several rounds of the Prisoner’s Dilemma is to use a Tit-for-Tat strategy. This is highly effective and is similar to Old Testament Eye-for-an-Eye morality. However that can also go wrong on occasion, leading to long lasting feuds that never get resolved. Then he gets into a discussion of New Testament morality and how that can avoid some of the problems of Old Testament morality. It’s a great discussion, and one of the many great discussions in the article.

Photo by Erol Ahmed on Unsplash

The race to Mars


In exciting news, the United States, China and the UAE are all sending missions to explore Mars. It’s not the same as the space race: there have been already a number of visits to Mars. But it’s great that the interest is continuing and we will learn more about the mission as a result.

For more on this, see:  ‘We are all Martians!’: space explorers seek to solve the riddle of life on Mars | Mars | The Guardian

Image via the article.

If you know someone learning about the periodic table, show them this

Not too long ago I was teaching my son about the periodic table and trying to make some of it relevant to him. Something like this would have helped: This Illustrated Periodic Table Shows How We Regularly Interact With Each Element | Mental Floss

It’s a great way of showing that the dozens of elements listed there are things we interact with regularly.

Check out the link for a more detailed version of the chart. (The above image is just an abridged version).

No, you cannot nuke a hurricane (and the alternatives aren’t great either)

Yes, nuking a hurricane is a bad idea. (duh.) There are better ideas,
but as Vox explains, even those are prone to problems. For example…

In one of the most infamous attempts to slay a hurricane, Nobel laureate Irving Langmuir led a US military experiment in 1947 to seed Hurricane King with ice in hopes of sapping its vigor. The storm at the time was sliding away from the United States and losing strength.

In an excerpt in the Atlantic from his book Caesar’s Last Breath, author Sam Kean explained Langmuir’s idea: Growing ice in the eye of the hurricane would make the eye grow wider and collapse the storm. But Hurricane King didn’t respond as expected. “To everyone’s horror, it then pivoted — taking an impossible 135-degree turn — and began racing into Savannah, Georgia, causing $3 million in damage ($32 million today) and killing one person,” Kean writes.

So yeah, it’s no small thing to stop hurricanes. But given that climate change may make things worse, it could be worth it.

What goes into a spacesuit?

Quite a lot! And it took quite a lot to figure it out! Did you know part of the mission of the space suit is just to filter out body odor? Or that the spacesuit of one astronaut can be used to help another astronaut with a failing suit? There’s lots of interesting facts about spacesuits, here: Apollo’s PLSS And The Science Of Keeping Humans Alive In Space | Hackaday