It’s Friday, and I have Notes, but they’re all Science Notes, so while this post (and any others of similar ilk that may follow) is in the spirit of Friday Notes, it comes from a different direction. Science from right field, so to speak, rather than the usual oddities from left field.
These Notes were originally meant as reminders to mention some cool science things to friends over burgers and beers (or whatever). But rather than tasty morsels for the few, why not for the many? (Or at least for a few more.)
So today, Science Notes (and some reactions):
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1 Comment | tags: AI, aircraft pilots, Black Labrador Retriever, burning iron, cosmology, dogs, Parker Solar Probe, positronic brain, Science Notes, toys | posted in Friday Notes, Science
In the last post, I mentioned a simple logic puzzle that I’d stumbled over while wandering around the interweb. Start with four glasses, in a row, all upright. The goal is, through a series of moves, to turn them all upside down. On each move, you flip three of the four glasses — up if down or down if up.
The goal is to end up with all four glasses upside-down in the least number of moves possible. It’s not hard to find the solution by trial and error, but it turns out there’s an underlying trick that not only solves it but solves it regardless of the number of glasses (where each move flips N-1).
Bonus: these solutions even look pretty — or at least symmetrical.
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11 Comments | tags: fun with numbers, logic games, logic puzzle | posted in From My Collection
I’ve been a semi-surreal mood lately. From a combination of things. It’s an election year. Politics these days is bad enough, but the last few Presidential elections seem to have written a weird new normal. Now, one candidate is in a criminal trial and potentially could be jailed before the election.
I spent winter wondering if I’d have wasps in the house again come summer. I’ve found three so far. Still no clue how they get in. Looks like I need an exterminator. Another surreal bullet point: this past winter kinda… wasn’t. Oddly, I missed it.
The surreal aside, however, Friday Notes marches on.
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4 Comments | tags: Assassination Classroom, big bang, Copernican Principle, faith, inflation, logic puzzle, universe | posted in Friday Notes
I don’t drink coffee. I never have. (Call me different and you’ll be right at least nine times out of ten.) In my whole life, I’ve consumed maybe two cups worth. That required multiple attempts — usually friends forcing it on me because “you’ll like this [flavor|variety|brand|style], I promise!”
They’ve all struck out. I just don’t care for the stuff, not even iced, not even extremely flavored and tarted up. In contrast, I’ve always liked iced tea, and therein lies my tale for the day. Because tea has plenty of caffeine, too.
And it gave me a double lesson about [1] why people drink coffee (one word: caffeine) and [B] the downside of drinking coffee (one word: caffeine).
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5 Comments | tags: coffee, diet mountain dew, FTR, Good Earth, iced tea, soda pop, tea | posted in Basics, Life
Earlier this year, I posted about that math gag that seems to prove (very mathematically) that 2=0 (an alternate version “proves” 1=0 using the same trick: a covert division by zero, an operation whose undefined result breaks the chain of logic).
Today I’m posting about another somewhat common mathematical (or rather, geometrical) gag — one involving chocolate! In the form of a magical chocolate bar that lets us remove an infinite number of bite-sized pieces but somehow remains the same size. It seems impossible.
And of course, it is. In this post I reveal the magician’s trick!
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22 Comments | tags: chocolate, fun with numbers, geometry, old tricks, triangle, tricks | posted in Math
Recently, fellow WordPress blogger Anonymole mentioned in a comment here that he enjoyed Day Zero, a 2021 science fiction novel by C. Robert Cargill. I checked out the Wikipedia article about it, and thought it sounded interesting. Turned out my library had it, so I checked it out (in both senses of the word).
And I agree! It’s very good, and I’d recommend it for any science fiction fan, especially fans of hard SF. It’s the story of a robot uprising that kills most of the humans but as told from the first-person point of view of one of the robots.
It’s the story of his desperate attempt to save the child he was bought to nourish and protect as the world crumbles around them.
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5 Comments | tags: artificial intelligence, killer robots, robots, science fiction, science fiction books, SF Books, technology | posted in Books, Sci-Fi Saturday
Often, the hardest part of Friday Notes (and, in fact, most) posts is writing the lede. Very soon after I began back in 2011, I settled on a three-part opening structure consisting of (as my template puts it): Intro… More… Punchline… followed by the page break that divides the lede from the body of the post.
That page break comes into play when WordPress lists a bunch of posts as well as in the notification emails (except in the double-damned WordPress Reader, which corrupts everything in the name of sameness). And while I’m on the topic of WordPress, I’m getting really fed up with it.
But that’s a post for another day. For now, I’ve got Notes…
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17 Comments | tags: Bentley, food, galaxy, Invincible, Spider Robinson, stupid people, stupidity | posted in Friday Notes
Thinking back on your math classes, you may recall that the square root of a number has two answers, one positive and one negative. For example, the square root of +9 is both +3 and -3 (the first one is known as the principal square root). Squaring +3 gives you +9, of course, but so does squaring -3.
Square roots aren’t the only roots of a number. For example, the (principal) cube root of +8 is +2 because +2³ = +2 × +2 × +2 = +8.
But just as square roots have two answers, cube roots have three (and fourth roots have four and so on and so on).
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3 Comments | tags: complex numbers, complex plane, cube roots, Euler's Formula | posted in Brain Bubble, Math
Over the last few weeks, I’ve watched (on Netflix) two seasons of Resident Alien, a SyFy television adaptation of the same-named comic series. A third season finished airing on the SyFy channel earlier this month but isn’t yet available on Netflix.
Both the comic and its adaptation are stories about an alien stranded on Earth, but the adaptation is a severe departure from its source text. Worse from my point of view, the television show is an Idiot Clown comedy, and I’ve never cared for those. In its favor, though, it stars the inimitable Alan Tudyk.
The pity is that the comic story is much better — and much smarter — than the adaptation but has been almost entirely discarded.
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10 Comments | tags: adaptations, aliens, comics, science fiction, science fiction TV | posted in Sci-Fi Saturday, TV
A bit more than three years ago (on February 3, 2021, to be specific), I posted a Wednesday Wow about COVID-19. Seeing the reported numbers in the news back then inspired me to obtain my own dataset and do some analysis. The results then were jaw-dropping, hence the Wow!
For quite a few months now I’ve been meaning to do an update to see what’s happened since then. Yesterday I pulled a new dataset and re-did the analysis.
The results are still jaw-dropping. And horrific and sorrowful.
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12 Comments | tags: charts, COVID-19, death | posted in Society, Wednesday Wow
Logos con carne 