Category Archives: Art

Thomas Kuhn, and why half of America loves/ hates Trump

Leave a reply

This post was inspired by articles like the one below asking how it was that some Americans, MAGAs think Trump is good when everyone of value sees him as a fat, bigoted, criminal clown. The Atlantic’s answer is they’re detached from classic ideals of good or moral, and are now fueled by “narcissism, fanaticism, and authoritarianism”. I thought a more helpful explanation was that we’re going through a paradigm shift, perhaps progressing in our thought of what it means to be good.

Consider Thomas Kuhn’s analysis of scientific progress. Tomas Kuhn was a major American Philosopher of the 1960s-70s who claimed that science progress was not uniform but included long periods of “normal science” punctuated by change. A “crisis” leading a “Revolution” resulting in big changes in language, outlook and thinking, a “paradigm shift”. In the midst of these scientific revolutions, the experts of the old system fight bitterly against the new while being confounded by the fact that it seems to work.

Consider the resistance to relativity and quantum mechanics. Before 1905 the experts were doing fine: Professors taught and students learned — formulas, tools and techniques were handed over. Educated had respect and money, and could communicate. There were some few contradictions, as in why the sun burned hot, or why the sky was blue, but one could ignore these. You knew who the experts were, and they didn’t include Einstein, Bohr, Pauli, Plank.

Democrats sell red hats and buttons with Fascist or Felon because Trump’s red MAGA (Make America Great Again) hats work for him.

But then came a few more problems, (inconsistencies in Kuhn-speak: radioactivity, photoelectrons, the speed of light… Einstein published on them in 1905, thoughts that few took seriously: imaginary time was a fourth dimension at right angles to the others, etc. The explantations seemed mad and for 14 years after he published, Einstein could not get a university job — anywhere. By 1919 detailed experiments suggested he might be right on a lot of things. It lead to the rise of a new group of experts plus a loss of esteem for the old, and a bunch of crank explainers who were neither but flourished in the confusion.

Hate abounded; new weapons and cures WWI removed aristocrats and beards. A popular book a lecture series of the time was “100 scientists against Einstein.” There followed a lost generation with no clear foundation. It took 50 years to resolve confusion, but there developed new thought leaders, a new language, new standard formulas and books were sold, and we were returned slowly to “normal science” in a new thought paradigm.

I see the conflict of opinion surrounding Mr Trump as a crisis in political thought similar to the crisis in science thought 100 years ago. Polite discourse if gone, replaced by stunts and insults. The government is currently shut, with 40% federal workers, those whose jobs are non-critical, on unpaid leave. It’s a collapse, not of morals, but of language. Trump hopes to use the shutdown, I think, to show that most of these 40%, are not needed. If they are not needed, it reflects a big lack in government — actually a big bloat in government. You can see why the opponents of cuts see Trump as a fascist who uses “dog whistles” to motivate “his base”, there is a lack of communication and a fear Trump may be right too, I think. The experiment in smaller government is being run as I write, and Trump seems confident that some 400,000 federal workers are not needed. Are they? Instead of debating, we’ve got to violence: two attempts on Trump’s life so far, the main college debater, Charlie Kirk, shot dead. Appropriate, I think, is Bob Dylan’s, “Times are a-changing” and “something is happening here, but you don’t know what it is, do you, Mr Jones.”

Other questions are being worked out as we speak -sending chills through the old order: Are China and Europe “ripping us off,” by free trade and stolen technology? Are tariffs an answer. Canadian and European leaders deride these thoughts openly, but I notice that both Canada and the EU have put heavy tariffs on Chinese goods.

Another issue is respect for experts. The Atlantic bemoaned that Trump supporters don’t respect experts on health, climate, and education, but perhaps they are lying. The seas have not risen as expected. Some warming may be good, or better than the remedies. Even if RFK Jr.’s ideas are wrong it seems that science has become unreliable (irreproducible), and that elite colleges aren’t fair in their assessment, nor do they provide great value.

Eventually things will settle down; we will some day have polite discourse. In 40-50 years, I suspect we’ll agree that some tariffs are good and that Trump’s tariffs are either to high or low, We’ll think that the climate push to no nuclear power, was a mistake, as was the giant, Ivanpah solar farm). And we’ll be able to discuss it civilly. I hope the change in thought takes less than 50 years.

Robert Buxbaum, October 3, 2025 – we are now entering another physics crisis too, I think.

Korean movies and music; my thoughts on why they do so well

Leave a reply

A Korean animated movie, K-Pop Demon Hunters, KPDH, just broke all-time record for most watched movie in the History of Netflix. It’s only 92 days old, and not a big-budget film with massive marketing, but it’s had over 314 million views so far, appearing on the most-watched list in 32 countries. Some Chinese movies have had more views, but these tend to be specific to China, with limited appeal elsewhere. KPDH has three songs in the Billboard 100 too, including golden at no.1, see official music video, 352M views for the music video. The last movie to have three songs in the Billboard top 100 was Saturday Night Fever, some 45 years ago. Other top Korean groups include Stray Kids, BTS, and Black Pink, they’ve had multiple #1 songs world wide of the last five years, and fill 50,000 seat stadiums regularly with seats going for $150. Here are Black Pink, filling a 50,000 seat stadium in Paris. If you read the US press, you’d hardly know these groups exist. BTS had a big hit during Covid called, “Permission to Dance,” a positive song during that grim period, danced e.g at the UN. Listeners noticed, the press did not. I think the press finds Koreans “anodyne”, that is, insipid.

Top movies of the last 20 weeks include two Korean offerings, Squid Game and K-Pop Demon Hunters

One thing that turns off the US press, is that Korean songsters and movies are less sexual, and less politically moralizing. The top Oscar awards go to political movies. At the Emmies, this year, we were told, “F*ck ICE, Free Palestine.” Similarly, Green Day, Eminem, and other western bands lead chants of F*ck Trump. The press takes this moralizing as intellectual, but I find it cheap and suspect it turns off many potential fans.

Director of Star Wars, Kennedy, promoting diversity.

A favorite moralizing of US movies is to show women who don’t need or want men. Frozen was like that, as was Encanto, Last Dragon, Moana… Star Wars was a top franchise that Disney made more feminist, writing basically every man as bad. Women were good, powerful, and inherently talented. Rey a main new character, grabs a light saber with no background or training, and uses it like an expert. It turns off men, then women stayed away too.

End kiss of Pirates of Penzance, the pirate prince and the major general’s daughter

We like to show black actors in white rolls too, though not white actors in black rolls. Hamilton was successful, and had black actors playing in every positive roll, white actors playing evil idiots. It was done again with 1776, less successfully. All the founding fathers are cast as women; Jefferson is black, bisexual, and pregnant. There’s a message somewhere. The upcoming movie about King Gustaf of Sweden has a dark-skinned actor playing the king. Why? We had a dark- skinned daughter of the major general, who bends the pirate over to kiss him, a dark skinned Snow White with most of the Dwarves normal height, a female She-Hulk, stronger than the original, who lectures the original (and us) about anger. Apparently, the idea is to highlight the difficulties powerful women face. Korean shows have casts that make sense to the plot, and no gratuitous reversals or sex. Did Oppenheimer need the many sex scenes? Did the suicidal love interest have to be written stronger than the main character?

Then there are the sequels: the Marvel universe includes 37 interconnected movies, Star Wars, 19, Batman 13. To get the full story, you have to see them all. So far, in 2025, only two of the major funded movies were original (one was Korean, Mikey 17). The others are all reboots or sequels with recycled plots and ever-bigger explosions. It all works until it doesn’t, then they make a reboot. Law and Order, 26 years old with 500 episodes.

Scene from Crash Landing on You. These two are in serious trouble.

Korean entertainment has series too, but much shorter and with fewer explosions. A TV series will have only 16-24 episodes and I’ve yet to see one with a mass-murderer. The Squid game, has had 13 episodes over 3 seasons. Some deaths, but not wholesale. A longer series, “Crash Landing on You,” 24. In it, a successful South Korean executive (female) is blown across the border to North Korea into the arms of a handsome, North Korean. No deaths. They could have gone on for years, but didn’t. People rewatch the original.

Other countries movies moralize too, like ours do, but they tend to be patriotic moralization, and anti gratuitous violence, not violent, anti-patriotic as in the US. Chinese TV shows present Chinese politicians as honest, they have praise for the Chinese schools and infrastructure, and regular invocations to respect the police. India moralization is similar, but more towards family order. Korean messages are in-between, with some crooked politicians, some violence, people with mental or emotional problems who evolve.

Robert Buxbaum, September 17, 2025. The industry has pushed back against criticism of their wokeness, claiming that the only folks turned off are the toxic fans: white, MAGA men, mostly, who hate diversity. They claim to be happy when such fans stay home and watch KPDH, or go buy $150 tickets to see Koreans sing in Korean.

All things change, nothing passes away, joke cartoon

Leave a reply

I’ve been blogging now for 13 years on all sorts of things; there were jokes, essays, politics, science, hydrogen.. I find that many of them are still relevant, though I would change most of them if they were to be written today. My first post was against the very high Detroit, MI minimum wage that was supposed to help black folks, but that I claimed ruined their city and their lives, and basically guaranteed corruption. I’d get back to this topic every now and again, but he problem has moved to LA and Puerto Rico. The last few Detroit mayors have eschewed this scam, to the benefit of the city.

Another topic I write about is engineering, like why the sky was blue, and why nuclear power makes lots of sense — and about hydrogen thermodynamics, or diffusion, or purification, or hydrogen cars being better than battery EVs.

MY opinion on hydrogen is still very high, though my opinion of hydrogen cars has soured in the past few years. There is infrastructure, and the cars themselves have improved, especially the batteries. There is now a good argument to be made that EVs make sense, especially for those who own their own home and who travel more than 500 miles per week. Meanwhile the customer base for hydrogen cars is only as a range extender.

Arctic Ice last month. It’s shrunk slightly, but still there — and I think the shrinking is a benefit.

I wrote disparagingly about global warming, arguing that Al Gore’s, Nobel prize winning claims were vastly exaggerated.. The arctic was supposed to be ice free by 2015 according to 98% of experts agreed (it’s things like that the ding the credibility of experts). I’d also argued that warmer was better. I’m reminded of a quote from Ovid, a Roman author: “Omnia mutantur, nihil interit”. Everything changes, but nothing passes away. It’s not that I read Ovid regularly, but the quote had appeared, in a modified form, in the British comedy, “Yes Prime Minister.”

I’d posted that it was unlikely that the Ukraine war would be fast, and it has not been, but neither was it as destructive as I feared. I did not sink the German economy, as I thought.

There is a new Pope now with words of hope — delivered, in English at White Sox stadium. This t seems like a big improvement. We have another war with Islam; different but the same, and continued issues with China. And I’m learning Latin via Duolingo. (Cum Duolingo, studeo linguae latinae.)

Robert Buxbaum, June 19, 2025. My company’s main website has changed too, it’s switched to WordPress format, check out the new look.

Golfball dimples on a car for improved mpg.

4 Replies
The Mythbusters dimpled Taurus, and a diagram meant to show how drag is reduced. On a golf ball, at low NRE, vortex separation is moved back to 110°, the mechanism on a car is different, I suspect.

The dimples on a golf ball reduce air-drag resistance, so why don’t we put dimples on planes or cars? Perhaps because it’s ugly, or that cars are much bigger and than golf-balls, so we expect the effect of skin effects to be smaller. Finally, a Reynolds number analysis suggests that dimples on cars should increase drag, not reduce it.

In 2009, the Mythbusters decided to test the conjecture. Hosts Jamie Hyneman and Adam Savage ran careful gas usage tests on a Ford Taurus that was first covered with smooth clay. They drove the car repeatedly (5X) on a track at 65 mph (about 100 km/h), and measured “slightly over 26 mpg,” 9.047 l/100km, a respectable value. They then carved dimples into the clay to simulate the surface of a golf ball. See picture at right, and put the removed clay into the trunk so there would be no decrease in weight.

Underneath a Porche GT4, smallish dimples.

They then drove the dimpled car over the same course, five times as before at exactly 65 mph, and found the car got 14% more mpg, 29.6 mpg, or 7.946 l/100 km. See video excerpt here. They considered it their most surprising Mythbuster episode.

As it happens, dimples had been put on some production cars, even before the episode. They are just located underneath where most people don’t see them. The VW “Golf” had dimples even before the episode, and the Porsche Cayman GT4 does today, see picture above left, but most experiments find little or nothing. Car dimples are typically smaller than those used on Mythbusters, so that may be an explanation. Dimples have been found to help on soccer balls (the stitching acts as the dimples), and bicycle wheels (less advantage).

PHYSICS OF FLUIDS 18, 041702 (2006) Mechanism of drag reduction by dimples on a sphere, Jin Choi, Woo-Pyung Jeon, and Haecheon Choia.

The graph at right shows the source of confusion for cars and the great advantage for golf balls. It’s a plot of the drag coefficient for smooth and dimpled golf balls, as a function of the Reynolds Number, where NRE = Vdρ/µ. In this formula, V is velocity, d is the diameter of the car, ball or whatever, ρ is the density of the fluid, and µ is viscosity. NRE can be thought of as the ratio of the inertial to viscous forces acting on the object. It’s a way of describing the combined effects of speed and size for different objects in motion.

We see, above, that dimples reduce golf-ball drag by more than 50%, but only at speeds/ Reynolds numbers that are much lower than for normal cars, NRE between about 4×104 and 3.5×105, as are typical of golf balls during play. A typical car at 65mph will have a NRE.CAR = 3×106, suggesting that there should be no advantage for dimples, or possibility a disadvantage, that dimples should increase drag. A side note one sees, above, is that it is only the dimples on the front of the golf-ball that reduce drag: other dimples do nothing. If one were to add dimples to high-speed trains and airplanes I’d suggest them only on the front, so far I have not seen them.

I think that the Mythbusters did a good job with their experiments, and find their 14% improvement significant. So why do so few other cars see and advantage. One thought I had was to note that the Ford Taurus is a remarkably round car, providing ample space for front dimples to help, most cars today are more angular. I also note that the production cars have smaller dimples, as on the Porsche, above. Then again, the Mythbusters folks may have made some non-obvious experimental error.

Robert Buxbaum, January 4, 2024. An important side issue in this is that Google’s AI was awful, a handicap in researching this article. It lies continuously and convincingly, and did so here. I’d asked it for the year of the episode, and the AI lied, and said 2012. I asked for the type of car, the AI said an SUV, and it gave a misdescription of the tests. Lying AIs appear as villains in science fiction, e.g. HAL of 2001 A Space Odyssey, now in real life.

Making semi-traditional STAM ink using walnuts.

Leave a reply

Jewish tradition requires certain holy items that have to be written on parchment with kosher, opaque, black ink. These items are abbreviated, STAM, books of the Torah (Sifre Torah, in Hebrew), Philactaries (Tefillin in Hebrew), and Mezzuzos for the doorpost. To be kosher the ink must be made from kosher sources: plant matter, soot, water, and/or inorganic chemicals. That leaves a lot of options, and it is likely that black Sharpie would be kosher, at least after the fact. Ideally, the ink should wash off in water too, based on Numbers 5:23 (Also, Rambam, Hilchos Tefilin 1:4, and Shulchan Aruch, YD 271:6).

There are ancient recipes, and I decided to semi-follow one, using walnuts instead of the classic gall nut and copper vitriol instead of iron. The aim was an ink that’s dark, long lasting, compatible with animal-skin parchment, and dissolvable. Some vegetable inks rot or fade, and most iron-based inks become permanent, like paint, they do not re-dissolve in water. If you don’t want to go through all this, you can buy kosher iron ink, e.g. here, knowing that this ink isn’t ideal, but it’s the type most people use for the practical reason that it looks nicer and permanent is a comfort.

The classical recipes for STAM ink is based on using the shell of gall nuts, a tree-growth (not really a nut) found in the Mid-east. As an experiment, I’ve tried to make a respectable, kosher ink with walnuts instead. Walnut trees grow readily in the midwest. I collected a dozen walnuts with their husks from a tree near my home. The outer husk had been green originally, but had turned black by the time I picked them (mid November). Rather than extract the inner shell, I used the walnuts as I found them, and tried boiling them in denatured alcohol, and also in water. Boiling in alcohol didn’t work well, producing the weak ink shown below, left. Boiling in water (below right) produced a much darker liquid. I used this as the basis of my ink.

Boiling walnuts in water produced a dark liquid, walnut water.
I boiled walnuts in alcohol. The water-ink runs and isn’t dark.

The traditional recipe begins by boiling gall nuts in water to produce a brownish ink-wash that looks hardly darker than my alcohol-wash ink. You then add soot and “green vitriol”. Perhaps that is copper sulphate, or perhaps iron sulphate. Copper sulphate is a dark blue, while iron sulphate is a light green. With gall nut water, it turns out that iron vitriol works ‘better’, reacting with tannin in the gallnut water to make a nice, black color that becomes a permanent ink. When tried the two types of vitriol with my walnut water, I saw no color advantage to iron over copper, and no real color change.

I put the walnuts in a beaker as shown, nearly covering them with water, and put a piece of foil on top. The longer I simmered the darker it got. In the end, I left the mix on a hotplate, on low for nearly a day as shown above. The ink-wash, by itself is a reasonably good ink, as shown below left.

The traditional recipe that I’ worked off o’m modifying includes three more ingredients, so I experimented with them. These were vitriol, soot, and gum Arabic, in proportions shown below, in the form of a poem in Arabic written about 900AD. The first of these additions I tested was vitriol. I first tried copper sulphate, half as much as walnut water, and found that it darkens the color a little and makes the combination a bit thicker thought the ink is still watery. Copper sulphate is an antimicrobial too, so even without changing the color much, I imagined this was a worthwhile addition. I also tried making the walnut ink with iron sulphate. This makes the ink slightly darker too, perhaps, but not thicker. I have less confidence about iron’s antimicrobial properties, and there were concerns that it could harm a parchment over time. I also worried that it would make the ink permanent.

Ink made from walnut water, copper sulphate, and soot. Perhaps better?

The next ingredient was soot. It’s used to make the ink darker, and perhaps thicker. Traditional soot is made from burning olive oil. One collects the soot by placing a plate over the smoky oil fire. I tried a bit of this, but it was slow, and I had some chemically produced soot in my lab, bought from MER corp, leftovers from making buckminsterfullerene. I added as much soot as vitriol as in the poem below, and as expected found it increased the blackness of the ink. It also changed the texture, making the ink gritty and harder to write with. I had trouble dissolving the soot into the ink too, and apparently I’m not the first to have this trouble. Some suggested heating, and some suggested honey. I tried both, and heating helped more than honey. I also tried using a drop of dish soap. The result, above left, was blacker than the original, but the writing is not professional grade, IMHO. The ink does not write well, and it still doesn’t cover 100%. I moved on to the next ingredient, gum Arabica.

The recipe for ink, musclé, via a poem by Mukla Farsi, 900AD from blog of the Bodlieian Libraries at Oxford.

The mixing ratios in this poem are not exactly clear. The amount of soot is the same as of vitriol, and half that of gall, but is this the weight of the gall nuts, or volume, or the weight of the dried extract. I used volume of walnut water and volume of soot, and have the sense that this is too much soot. Also soot is messy and hard to dissolve; use gloves and a lab jacket. the soot does not come out easily.

My final ingredient is gum Arabic, the gum of the acacia tree. This seems to be used as a thickener. Gum Arabic is available in the US, on Amazon as an edible “candy”, so I bought some. It wasn’t expensive, but took about 10 days to get here. In the meantime, I tried honey as a thickener. It appears in some ancient recipes, but didn’t really help here, and left the page sort of sticky. Gum arabic is solider, so I hoped for for lasting product. When the Gum Arabic came, I found that it was solid, crystalline, with has hardly any taste. Maybe Arabs add sugar? I figure there might be a mystical advantage to gum Arabic since it comes from the Acacia tree, the type of tree used to make the Ark of the Covenant. My expectation was that it might also make the ink darker, and that it might help dissolve the soot.

As it happens, gum Arabic doesn’t dissolve in cold water. But it did dissolve in hot water if I mixed it in and stirred for 5 minutes. The gum helped dissolve the soot too; gum Arabic seemed to do a better job than honey in this respect. Once the gum ink dried it was nice and solid, with the dried letters standing off the page a bit; they’re raised letters, and I really like that. The ink was still sort of grainy, perhaps from the walnut bits. I then tried dipping a written on parchment into some water and found the ink-letters dissolved easily. My understanding is that the ink I’d made was highly kosher for STAM, but as a follow-up experiment, I’m carrying some inked parchment in my breast pocket to see if it rots or fades. So far, no change. Some samples of writing are at left. The upper words are with the iron-vitriol version (iron sulphate), the lower with the copper vitriol (copper sulphate). You can sense why scribes might prefer the iron ink.

Robert Buxbaum, December 22, 2024. Scribes of 2000 years ago used wooden pens, it seems, as feather quills and fountain pens hadn’t been invented. I used a wood pen on some samples above, made by carving a popsicle stick. The better-looking letters, and longer passages, were written with a metal, calligraphy “quill.”

Cursive writing is art, and should be taught in school

1 Reply

Few people learn cursive these days with any skill or speed. It’s a shame. This is a form of traditional art and communication. Handwriting is a slower way of writing, that leads to a different type of letter or essay. The sentences are, typically longer, and the words more expressive because the experience of writing and reading cursive is more expressive than with text. The emotional state and energy of the writer comes through the cursive writing, because the writing itself is a form of creative art, adding to the words.

Send a letter or a post card, and you’ve sent a work of art. You’ve communicated words, or course, but far more than with a text or email. First off, there is the picture on the card. You bought that card, or took the picture. Then there is the art of how many words you use. Each letter is directed to only one person, not to 100 as with a text. As a result, people will keep your letter or card far more than they will not keep a text an email. It is more from you, and more to them. You are likely to put more (or different) things in: experiences and feelings that don’t go into an email or text-letter. The size of your writing communicates and even your cross-outs are part of a cursive communication. With email or text, there are no natural cross outs, and you can send the same letter to 100 people, so you write more blandly, with an eye for eventual reuse for someone else. A cursive note is intended for only one person, the one recipient, and this affects both the words, and the form of the words.

Cursive also lends itself to adding a small sketch or doodle. This becomes part of a personal part of the art in a way that does not fit with normal text. It’s calligraphy and conceptional art, an important part of education, and a continuation of western culture. In normal texts, some people have come to add emojis or GIFs, but these are nowhere near as personal or expressive. The cursive letter or note is personal and spicy. It’s an important art form, at least a valid an art form as any that could be taught in school, and it should be.

Robert E. Buxbaum, Sept 1, 2024. I’m running for school board, and like the idea of teaching basic knowledge as a foundation of creativity. One of these basics, I think, is cursive writing.

Shrunken clothes and keffiyehs: anti Trump fashion

Leave a reply

Donald Trump has a lot of signature behaviors, including his “America first” politics, his hair, his ‘tan,’ his way of speech, and his way of wearing suits. Half of America finds them attractive or at least OK, while the other half finds them super-unattractive. Trump seems to have a super-power, that there is no middle. Those who dislike him dislike everything about him to his policies to his clothes. Let Trump propose immigration control, and the opposition demands open borders. Let Trump propose tariffs, an ole Republican approach to diplomacy that is thought to bring in Jobs, and the opposition (even unions!) goes crazy for free trade.

Trump likes dark colors, long ties, long jackets, and long sleeves on his suits.

In the book “Fear”, by Bob Woodward’s first story is about folks on Whitehouse staff stealing Trump’s first tariff proposal from his desk in an effort to prevent it being signed. Whatever they thought of the tariff (it was not that weird, and didn’t do much) the fact that they stole it showed the dramatic reaction people have. In this case, folks who otherwise understood that they are there to serve the president, not to overturn his policies.

LeBron James in the Thom Browne, Anti Trump look. The pants are too short, as are the sleeves and jacket. Note the dull grey color and the short, dull-grey tie. The fellow behind him is dressed normal or Trumpish: dark clothes, long sleeves, bright, long tie.

In terms of fashion, the anti-Trump fever is to react against Trump’s choice of suits in dark colors, paired with bright ties that hang below the waist. The anti men’s fashion has moved to dull grey suits and short, grey ties. Trumps’s suits’s typically have extra-long long sleeves and long pant legs that hit the shoe-top. He likes long jackets too, that to me look vaguely like Lincoln’s. The fashion back-lash is men are wearing ridiculously short pants and jackets, with socks showing.

LeBron James, at right, is wearing a complete mens, anti-Trump look, likely a Thom Browne suit, a very expensive ill fit. This suit doesn’t look comfortable, but it’s fashion, and as I’ve said before, you’ve got to suffer for fashion.

There is also a woman’s version of anti Trump fashion. The Trump women wore feminine, closely fitting clothing and wore their hair long. The anti-Trump women’s look is the opposite; it includes short hair and masculine, often covered. This is paired with loose fitting male clothes: cargo pants or combat fatigues. Topping it off, ideally ideally is a checkered, keffiyeh scarf, either over the head or around the neck. The style of scarf was made popular by former PLO head, Yassar Arafat. This look is particularly popular on college campuses and at demonstrations. It implies that the wearer supports Palestine (Trump supported Israel), and shows you are part of the cool set. The wearer, herself, is typically is not in favor of kidnapping or rape or putting babies in oven, but they are so strongly anti Israel and Trump that they are OK with it, especially if it is Jews being kidnapped, rabed, or cooked alive. They will call for Jews to be gassed or tortured. It’s part of being in the in-crowd, and antisemitism is what’s in these days — it’s been popular for many centuries.

The women’s anti-Trump look includes short hair and a keffiyeh scarf. Photo from WRLN Florida.

It is a misconception to think that those wearing the keffiye don’t understand that they would not live long if they had to dwell among the Arabs they support. These feminists do understand, as do the ‘Queers for Palestine’. They’d never want to live in even the most moderate Arab country, the same way that those supporting Mao would never want to live in China under Mao. It is fashion, and like all fashion, it’s a mob behavior that exists only for fashion’s sake. In this case there is the added advantage that you get to hit Jews and break their windows — something that is particularly attractive for feminist women, I notice; the majority of people at the Palestine protests are women.

Robert Buxbaum November 7, 2023.

Zoo Jokes, Symphony Joke

Leave a reply

I went to the zoo to see the baguettes…

….They’re bread in captivity.

The had a pig there, sweltering in the sun.

He was bakin’

I dan’t go the symphony anymore, these days …

… It’s all sax and violins.

Robert Buxbaum, Aug. 2, 2023 –It’s summer, what do you expect? Life’s a beach.

Relativity’s twin paradox explained, and why time is at right angles to space.

Leave a reply

One of the most famous paradoxes of physics is explained wrong — always. It makes people feel good to think they understand it, but the explanation is wrong and confusing, and it drives young physicists in a wrong direction. The basic paradox is an outgrowth of the special relativity prediction that time moves slower if you move faster.

Thus, if you entered a spaceship and were to travel to a distant star at 99% the speed of light, turn around and get here 30 years, you would have aged far less than 30 years. You and everyone else on the space ship would have aged three years, 1/10 as much as someone on earth.

The paradox part, not that the above isn’t weird enough by itself, is that the person in the spaceship will imagine that he (or she) is standing still, and that everyone on earth is moving away at 99% the speed of light. Thus, the person on the spaceship should expect to find that the people on earth will age slower. That is, the person on the space ship should return from his (or her) three year journey, expecting to find that the people on earth have only aged 0.3 years. Obviously, only one of these expectations can be right, but it’s not clear which (It’s the first one), nor is it clear why.

The wrong explanation appears in an early popular book, “Mr Tompkins in Wonderland”, by Physicist, George Gamow. The book was written shortly after Relativity was proposed, and involves a Mr Tompkins who falls asleep in a physics lecture. Mr. Tompkins dreams he’s riding on a train going near the speed of light, finds things are shorter and time is going slower. He then asks the paradox question to the conductor, who admits he doesn’t quite know how it works (perhaps Gamow didn’t), but that “it has something do do with the brakeman.” That sounds like Gamow is saying the explanation has to do with deceleration at the turn around, or general relativity in general, implying gravity could have a similarly large effect. It doesn’t work that way, and the effect of 1G gravity is small, but everyone seems content to explain the paradox this way. This is particularly unfortunate because these include physicists clouding an already cloudy issue.

In the early days of physics, physicists tried to explain things with a little legitimate math to the lay audience. Gamow did this, as did Einstein, Planck, Feynman, and most others. I try to do this too. Nowadays, physicists have removed the math, and added gobbledygook. The one exception here are the cinematographers of Star Wars. They alone show the explanation correctly.

The explanation does not have to do general relativity or the acceleration at the end of the journey (the brakeman). Instead of working through some acceleration, general relativity effect, the twin paradox works with simple, special relativity: all space contracts for the duration of the trip, and everything in it gets shorter. The person in this spaceship will see the distance to the star shrink by 90%. Traveling there thus takes 1/10th the time because the distance is 1/10th. There and back at 99% the speed of light, takes exactly 3 years.

The equation for time contraction is: t’ = v/x° √(1-(v/c)2) = t° √(1-(v/c)2) where t’ is the time in the spaceship, v is the speed, x° is the distance traveled (as measured from earth), and c is the speed of light. For v/c = .99, we find that √1-(v/c)2 is 0.1. We thus find that t’ = 0.1 t°. When dealing with the twin paradox, it’s better to say that x’ = 0.1x° where x’ is the distance to the star as seen from the spaceship. In either case, when the people on the space ship accelerate, they see the distance in front of them shrink, as shown in Star Wars, below.

Star Wars. The millennium falcon jumps to light speed, and beyond.

That time was at right angles to space was a comment in one of Einstein’s popular articles and books; he wrote several, all with some minimal mathematics Current science has no math, and a lot of politics, IMHO, and thus is not science.

He showed that time and space are at right angles by analogy from Pythagoras. Pythagoras showed that distance on a diagonal, d between two points at right angles, x and y is d = √(x2 + y2). Another way of saying this is d2 =x2 + y2. The relationship is similar for relativistic distances. To explain the twin paradox, we find that the square of the effective distance, x’2 = x°2 (1 – (v/c)2) = x°2 – (x°v)2/c2 = x°2 – (x°v/c)2 = x°2 – (t°2/c2). Here, x°2 is the square of the original distance, and it comes out that the term, – (t°2/c2) behaves like the square of an imaginary distance that is at right angles to it. It comes out that co-frame time, t° behaves as if it were a distance with a scale factor of i/c.

For some reason people today read books on science by non-scientist ‘explainers.’ I These books have no math, and I guess they sell. Publishers think they are helping democratize science, perhaps. You are better off reading the original thinkers, IMHO.

Robert Buxbaum, July 16, 2023. In his autobiography, Einstein claimed to be a fan of scientist -philosopher, Ernst Mach. Mach derived the speed of sound from a mathematical analysis of thermodynamics. Einstein followed, considering that it must be equally true to consider an empty box traveling in space to be one that carries its emptiness with it, as to assume that fresh emptiness comes in at one end and leaves by the other. If you set the two to be equal mathematically, you conclude that both time and space vary with velocity. Similar analysis will show that atoms are real, and that energy must travel in packets, quanta. Einstein also did fun work on the curvature of rivers, and was a fan of this sail ship design. Here is some more on the scientific method.

Birth dearth in China => collapse? war?

1 Reply

China passed us in life-expectancy in 2022, and also in fertility, going the other way. In China lifespan at birth increased to 77.3 years. In the US it dropped an additional 0.9 years, to 76.8. US lifespans suffered from continuing COVID and an increase in accidents, heart disease, suicide, drugs, and alcohol abuse. Black men were hit particularly hard, so that today, a black man in the US has the same life expectancy as he would in Rwanda. China seems to have avoided this, but should expect problems due to declining fertility and birth rates.

China passed us in life expectancy in 2022.

Fertility rates will eventually burden the US too, as US fertility is only slightly greater than in China, 1.78 children per woman, lifetime, compared to 1.702 in China. But China has far fewer people of childbearing ages, relatively, and only 47% are women. Three decades of one child policy resulted in few young adults and a tendency to abort girls. Currently, the birthrate in China is barely more than half ours: 6.77 per 1000, compared to 12.01 per 1000. And the proportion of the aged keeps rising. China will soon face a severe shortage of care-givers, and an excess of housing.

Years of low birthrate preceded the “Lost decades” of financial crisis in Japan and the USSR. Between 1990 and 2011, business stagnated and house prices dropped. China faces the same; few workers and more need for care: it’s not a good recipe.

Beginning about 1991, Japan saw a major financial collapse with banks failing, and home values falling. China seems over-due.

Few children also signals a psychic lack of confidence in the country, and suggests that, going forward, there will be a lack of something to work for. Already Chinese citizens don’t trust the state to allow them to raise healthy children. They have stopped getting married, especially in the cities, and look more to have fun.

Affluent women claim they can’t find a good man to marry: one who’s manly, who will love them, and who will reliably raise their standard of life. Women seem less picky in China’s rural areas, or perhaps they find better men there. However it goes, urban women get married late and have few children, both in China and here. China produces great, sappy, soap operas though: a country girl or secretary in a high-power job meets a manly, urban manager who lovers her intensely. A fine example is “The Eternal Love” (watch it here). It involves time travel, and a noble romance from the past. Japan produced similar fiction before the crisis. And a crisis seems to be coming.

While Japan and Korea responded quietly to crisis and “the lost decades,” allowing banks to fail and home values to fall, Russia’s response was more violent. It went to war with Chechnya, then with Belarus and Ukraine, and now with NATO. I fear that China will go to war too — with Taiwan, Japan, and the US. It’s a scary thought; China is a much tougher enemy than Russia. There is already trouble brewing over new islands that they are building.

Robert Buxbaum January 25, 2023. If you want to see a Korean soap opera on the Secretary – manager theme, watch: “What’s wrong with Secretary Kim”. (I credit my wife with the research here.) I suspect that Americans too would like sappy shows like this.