Something You Need To Try At Home "The Dzhanibekov Effect"

fmdog44

fmdog44

Well-known Member
Location
Houston, Texas
Another name for this phenomenon is "The Tennis Racket Effect". Take your smart phone and hold it at the top or bottom like a playing card and simply flip it to make it spin one revolution or do it with a tennis racket hold the handle and flip it like you would flipping a pancake. What happened?! While you flipped in one axis it rotated one-half turn in the intersecting axis! This happens every time and there's nothing you can do to prevent it. You can do this with anything rectangular in shape. Why do things do that? How should I know?
 

Um, is this something like filling a sink with water and then pulling the plug, and if you're north of the equator, the whirlpool goes in one direction, south of the equator it goes in the other?
 
Like, just where is The Great Divide? Do the rivers run one way in one half of the Divide and the other way in the other half?

I won't be throwing my phone around. I may upset the GPS function if I remembered where it is. Good question tho' FM.
 
I remember when my phone got "stuck" in the landscape mode once and I took it in to the store to have them tell me what to do. The kid behind the counter told me to hold it in my hand and wave it around in a "figure-8" formation several times. I thought he was having me on, but darned if it didn't work and it's worked every time since.
 
RadishRose said:
Like, just where is The Great Divide? Do the rivers run one way in one half of the Divide and the other way in the other half?

I won't be throwing my phone around. I may upset the GPS function if I remembered where it is. Good question tho' FM.
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Haha, it's the Continental Divide, and yes, rivers run in opposite directions at that point. You can cross it numerous times in the Rocky Mountains. :D

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Yes, water drains in a counter-clockwise swirl in the Northern Hemisphere and goes clock-wise in the Southern Hemisphere. Tried it in both places.

Fun fact = the constellation Orion appears "upside down" in the Southern Hemisphere.

Had a Kiwi once show us a constellation, only observable in the Southern Hemisphere, called the Southern Cross. While doing that he also pointed out one he called the "source pen". Turned out in was the Big Dipper and he was really calling it the "sauce pan", just couldn't quite understand his Kiwi twang. :LOL::LOL::LOL:
 
jujube said:
I don't do anything I can't pronounce...….especially if it's Russian. I mean, what if I started WWIII or something......LOL.
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It was actually discovered by a Russian scientist when some wing nuts he observed doing this rotation thing in outer space when he removed them as they were repairing a Russian space observatory. The Russians were so freaked out about it they kept it secret for ten years! It is way over my head when I read the explanation as to why it occurs but I am flipping everything in my home.
 
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