If you think that’s an esoteric club, try this one:
Jewish Lesbian Daughters of Holocaust Survivors
Unrelated interesting random fact I stumbled across:
The Japanese words for breakfast, lunch, and dinner literally translate as “morning rice,” “daytime rice,” and “evening rice.” This says something about the importance of rice in Japanese culture.
It’s not as esoteric as that, but Jews for the Preservation of Firearms Ownership is a very active gun-rights group. I have followed their FB page for many years. They’re hardcore.
A young Jay Leno opened for Rahsaan Roland Kirk.
Understanding tides is extremely complicated. But empirically modeling them, especially in any single location, is very easy. Record them for a month, take a Fourier expansion, and you’ve got a pretty good model. Extend the data collection for a few years, and you’ve got a great model.
That makes sense. I’d love to understand tides. I can let other people predict them.
Charlie Sheen pitched for his high school baseball team, a skill that was useful when he was cast as Ricky “Wild Thing” Vaughn in the 1989 film Major League; he did not need to be taught to throw like a major league pitcher. The film’s baseball advisor put a radar gun on him during his pitching scenes, and found that his fastball was consistently in the high 80s - not good enough for a professional career, but impressive for an amateur. Although he did admit to taking steroids in preparation for the role.
Today I learned about the Erfurter Latrinensturz or, in English, the Erfurt Latrine Disaster, where 60 German nobles died after the floor gave way and dumped them into a cesspool.
I’m especially amused at the German word “latrinensturz.” I plan to use it more in my life.
“2020 is a real latrinensturtz.”
More on tides. The coast is typically pretty windy and so, you would think, a good place (centuries ago) to build a windmill. But you also see a few examples of tide mills. As the name suggests: water mills powered by the tide. You have to think there’s a balance to be considered here: tides are reliable, but not always usable; wind not always reliable.
We’ve booked a couple of days away (summer holiday part 2), by chance not far away from Eling tide mill, which in turn is not that far from Weymouth - which is where the whole discussion of tides originated. I checked and, yes, Eling also has four tides a day.So I wonder - same amount of downtime, but more manageable because tide intervals are shorter? Enough to tip the balance in favor of a tide mill over a windmill?
j
The most fascinating thing about the gomboc video, is that some turtles have evolved the gomboc shape.
BTW I have been in Kabare, DRC. I don’t recall any lightning, but thr nearby Bukavu is one of the world’s most beautiful citirs.
At the Paris air show in 1973, the era of supersonic air travel began with demonstrations of both the British/French Concorde, and the Soviet Tu-144. During one of the demonstration flights, the Tu-144 broke apart and crashed a few miles away from the airport.
27 years later, in July of 2000, the commercial supersonic era ended with the crash of the Concorde.
The sites of the two crashes are only 9 miles apart.
Video about it here.
The digit sum for the first three integer cubes is: 1. 8. 9. This sequence then repeats for all sequential integer cubes. At least for all I have encountered.
Could you explain this a little further…
I took this to mean:
1x1x1=1
2x2x2=8
3x3x3=27, 2+7=9
…
4x4x4=64, 6+4=10 1+0=1
5x5x5=125, 1+2+5=8
6x6x6=216, 2+1+6=9
Does it indeed hold true?
Yes. The digit sum is the same as the remainder on division by 9, which is the same as looking at arithmetic modulo 9. Which is to say, it suffices to check for 0 through 8, where the results are 0, 1, 8, 0, 1, 8, 0, 1, 8.
One quintillion is 1 followed by 18 zeroes (1,000,000,000,000,000,000). One quintillionth is 1 preceded by 18 zeroes (.0000000000000000001).
Nope, only 17 zeros. Think of it this way: how many zeros are in ten (10)? How many zeros are in one-tenth (.1)?
Seems to:
57^3 = 185193 Digit sum = 9
58^3 = 195112 Digit sum = 1
59^3 = 205379 Digit sum = 8
60^3 = 216000 Digit sum = 9
Arbitrary selection of 4 sequential integers
Can anyone explain why the digit sum would be the same as the remainder on division by 9, slowly, for the dim-witted among us?
Yeah, I don’t know why, but I remember it is some Mathemagical thing. I’d like to hear a good explanation.
Bat poop sparkles because of the insect exoskeletons, made of chitin, that pass through the digestive tract.