About a cat flip video!

Posted on January 18, 2020 by skullsinthestars

Okay, even though my book is now out in the world and I spent years working on it, I still manage to come across new things that surprise me about the problem of the falling cat!  A good example of this came across my twitter feed the other day: a video of a cat doing some pretty incredible acrobatics.  I include a gif of the relevant action, which includes a slower-motion version of the flip, below.

Gif of a cat flipping while walking, ending up facing the opposite direction.

The cat, and the people, are startled by the sound of a passing car. The cat almost instantly does a complicated maneuver that results in it turning to cat the possible threat.

What surprised me about this: assuming that this video has not been altered, and I have no reason to think that it has, we have a cat that is using the cat-righting reflex to do something quite distinct from making sure it lands on its feet! In particular, it is using the “cat flip” to change its horizontal orientation, rather than its vertical orientation.

Being that I am now evidently the world cat flip expert by default, I thought I would take a closer look at this video to see if I can analyze the motion being done.

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Posted in Animals, Physics | 4 Comments

A few more Falling Felines bits of news!

Posted on January 8, 2020 by skullsinthestars

If you’re still not tired of Falling Felines and Fundamental Physics news, yesterday was a good day for new posts, which I thought I’d compile here, along with some earlier stuff I forgot to share!

The Curiosity Daily Podcast interviewed me late last year, and that interview went up yesterday! You can listen to the podcast here.

I wrote a blog post for BBC Science Focus giving an introduction to the science and history of falling felines, a bit of a “Cliff Notes” for the book, and it also appeared yesterday. You can read it here!

I somehow neglected to share this cool interview that my friend Jennifer Ouellette did with me about the book that appeared on Christmas Day, which you can read here!

It’s a small thing, but my longtime friend and colleague Scott Carney, when he announced the end of my term as an editor for the Journal of the Optical Society of America A, gave my book a shoutout!

I also did an early morning interview on Sirius XM’s Doctor Radio show about the book, but I don’t know if it is saved online — will investigate further…

Finally, I should mention that I will be doing my first “official” book event on Thursday, January 16th, at Park Road Books in Charlotte! I’m planning to read a bit from the book, sign copies, and try and demonstrate cat-turning techniques using an ice-skating spinner, so it should be an entertaining time if you’re in Charlotte or Charlotte-adjacent!  The event starts at 7:00 pm.

I had to take a screencap for myself!

Posted in Animals, History of science, Personal | Leave a comment

Falling Felines at BBC Science Focus!

Posted on January 7, 2020 by skullsinthestars

In case you’re not tired yet of hearing about my book on Falling Felines and Fundamental Physics, I wrote a post for BBC Science Focus Magazine about the falling cat phenomenon, which you can read here.  A sample of the article:

With the recognition of conservation of energy, physicists soon decided that a cat simply cannot flip over on its own in freefall once it begins falling. The consensus view was that a cat, at the moment it begins to fall, must push off of its perch to give itself some initial rotation that leads to it ending on its feet. The cat generates its angular momentum by imparting the opposite angular momentum to its perch and, consequently, the Earth itself.

But this explanation was demolished in a fateful meeting of the French Academy of Sciences on October 22, 1894, by the physiologist Etienne-Jules Marey. Marey presented a sequence of high-speed photographs taken of a falling cat, the first of their kind, showing clearly that the cat begins falling upside-down without any rotation but nevertheless manages to turn over to land on its feet.

The revelations of the photographs threw the meeting into disarray. One member of the Academy declared that Marey “had presented them with a scientific paradox in direct contradiction with the most elementary mechanical principles.”

I’ll be back with more posts soon!

Posted in Animals, Personal, Physics | Leave a comment

A decade of history of science!

Posted on December 31, 2019 by skullsinthestars

I’ve picked up a significant number of new followers on the blog lately, and this combined with the wrap-up of the decade seems like a good time to share some of my favorite history of science posts of the past ten years, for those who might have missed them. I can’t say that I’ve written at a particularly fast pace, but I do manage to find some of the strangest, most obscure, and most interesting tales about science and how it has been done! What follows is a list of posts, by year, and a short description of what makes them special to me.

Here’s hoping for another ten years of fascinating science and science history!

April 28, 2010: Mythbustin’: 1808 edition (the incombustible man). Science has a long history of debunking supposed supernatural powers, and a great and relatively little-known example of this was early efforts to explain how some performers seemed to be immune to heat and fire! A fun post that delves into both science and theatrics.

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Posted in History of science, Personal, Physics | Leave a comment

Spoiler-filled The Rise of Skywalker thoughts…

Posted on December 29, 2019 by skullsinthestars

Back from China and hoping to get some more blogging done! After some 24 hours of non-stop travel, I got back on the 23rd and decided to stay awake as long as possible by going to see the final movie in the Star Wars Skywalker epic, The Rise of Skywalker.  Like the previous two episodes in this trilogy, I thought I would share some spoiler-laden thoughts on the movie here safely below the fold in a blog post where they can’t hurt anyone!

A word of warning, and a disclaimer, before I begin, though. My reaction to the movie was… not great. But everyone is entitled to their own opinion, and if you liked the movie, this is not a judgment or criticism of you. I’m not writing this to argue, but rather to just clear my head of the thoughts that have been spinning around since I saw the movie. Also, I really wanted to round out the posts I did about the first two movies, here and here.

And I’m not interested in arguing, either, so any hostile comments will probably be deleted and the posters blocked! Star Wars fandom has become rather toxic in recent years, and I don’t feel like indulging in that toxicity.

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Posted in Entertainment, Personal, Science fiction | 3 Comments

A chat with H.G. Wells (1897)!

Posted on December 7, 2019 by skullsinthestars

Now that Falling Felines is out, I’m doing research for my next popular science book, which I will talk more about soon! In the meantime, I will share interesting tidbits that I come across in my explorations, such as this gem. Also, I’m currently traveling in China — again — so my blog-writing resources are limited!

In today’s media-rich environment, one expects to see the views of one’s favorite authors shared, for better or worse, through both interviews and their own social media accounts.  One generally doesn’t, however, expect that authors of the Victorian and Edwardian eras received similar treatment.

Imagine my surprise, then, when I stumbled across an interview with H.G. Wells, one of the greats of science fiction!  Wells, of course, was an incredibly influential, prolific, and successful author of science fiction, and many of his novels are still relevant and worthwhile today: The Time Machine, The Island of Doctor Moreau, The Invisible Man, The War of the Worlds.

Wells circa 1890, via Wikipedia.

I found the interview in volume 22 of the magazine Current Literature, published in 1897, which appeared at the height of Wells’ popularity as a science fiction writer, with most of his major works having appeared in print, at least in magazine serial form. I share the interview in its entirety below, which gives some contemporary context of Wells’ popularity as well as his thoughts on writing and his lifestyle.  I share a few thoughts here and there when something catches my attention!

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Posted in History of science, Science fiction | 4 Comments

Meeting Darlene and playing Jasmine: The Battle for the Mid-Realm!

Posted on November 20, 2019 by skullsinthestars

Life has had its ups and downs over the past few years, with a number of particularly painful downs. But every once in a while, something really lovely happens that reminds me that the world still has some surprises and joys in it, if one knows where to look!

So as folks who follow my blog are probably aware, I’ve been doing a long dive into old school Dungeons & Dragons products and the early history of role-playing games; here’s my last post on the subject, for those who have missed them!

In my recent explorations, I came across a game I hadn’t heard of before: Jasmine: The Battle for the Mid-Realm Collector Card Game.  The game came out in 1982, created by the artist Darlene and based on her illustrated adventure The Story of Jasmine which appeared in Dragon Magazine (back then known as The Dragon) from issue #37 to #48. Issue #37, which appeared in May 1980, in fact featured cover art of Jasmine by Darlene, as shown below!

I was intrigued by the description of the card game on Wikipedia, and was curious to see if I could track down a copy of the game. Imagine my surprise when I discovered that Darlene is still selling signed copies of the limited edition printing from 1982 on her website!

Of course, I ordered a copy as quickly as I could. I have number 1532 of 2000!

So I want to talk a bit about the game itself, but first let me share the delightful part: it turns out that Darlene lives not terribly far away from me, and noticed this when she was shipping the game. She graciously offered to come personally teach me and my friends how to play! My roommate Sarah and I met Darlene yesterday to have lunch and learn the game, and it was a great time. I took a few photos to commemorate the occasion, which I will share near the end of the post.

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Posted in Entertainment, Fantasy fiction, Personal | Leave a comment

The Third Grave, by David Case

Posted on November 17, 2019 by skullsinthestars

As a big fan of ancient Egypt, I am a sucker for horror novels based on ancient Egyptian mythology.  So when I saw that Valancourt Books had reprinted David Case’s 1981 novel The Third Grave earlier this year, I knew I had to read it!

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Posted in Horror | Leave a comment

Edweard Muybridge’s grand achievement (1873)

Posted on November 6, 2019 by skullsinthestars

So, now that my book Falling Felines and Fundamental Physics is available for purchase, I’ve been answering questions for editors working on the translated editions that will appear.  These questions led me back to doing a little historical research, and as is always the case I’ve come across fun new things to share!

Today, I thought I would share a nice little bit of history about Edweard Muybridge (1830-1904). Muybridge, as many people know, produced the first high-speed photography of a horse in motion, definitively answering the question of whether a horse’s legs are completely off the ground at any time during a trot or a gallop.  The answer, as his famous 1878 photos shown below illustrate, is “yes.”

But Muybridge’s very first photographs of a horse in motion were taken much earlier, in early 1873. I do not believe they were ever published, but I found the earliest newspaper accounts of his accomplishment, and I thought I would share it here!

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Posted in Animals, History of science | 1 Comment

A Night in the Lonesome October, by Roger Zelazny

Posted on November 5, 2019 by skullsinthestars

So, just before October began, I declared my plan to read Roger Zelazny’s A Night in the Lonesome October (1993) in the way that a lot of dedicated fans do: one chapter per day. This post is a summary of my thoughts of that charming experience!

Before I share my thoughts on the novel, a little background: this was Zelazny’s last novel, and the one that he considered his best work. Despite the high praise it received, it went out of print rather quickly and might have remained in obscurity except for dedicated fans who kept its spirit alive until it finally received it well-deserved reprinting.

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Posted in Horror, Lovecraft | 2 Comments