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(3,733 posts)tblue37
(65,541 posts)Retired Engineer Bob
(759 posts)rsdsharp
(9,236 posts)Phoenix61
(17,025 posts)Tanuki
(14,930 posts)reACTIONary
(5,796 posts)... Stairway to Heaven? I thought that was pretty aggressively protected.
scipan
(2,366 posts)My mind ^
eppur_se_muova
(36,317 posts)degrees of phase in each cycle, until eventually it is 360, then 720, then 1080 degrees ahead -- which all look the same as being in-phase. Past the halfway mark of the cycle, say, 300 degrees behind looks the same as 60 degrees ahead.
Someone fine-tuned the lengths of those strings very carefully, so that the ratios of their lengths are as close as possible to the ratio of the squares of successive integers. (The period of a pendulum is proportional to the square root of its length.)
So the second shortest pendulum is, say, (52/51)^2 times the length of the shortest, the next longest is (53/51)^2 as long, etc. up to (65/51)^2. When the shortest has swung through 65 cycles, the next shortest will have swung through 64, etc., all the way down to 51.
scipan
(2,366 posts)I was actually not realizing they were acting completely independently.
The period of a pendulum is proportional to the square root of its length.
Sogo
(5,017 posts)....not that I actually followed, but still, amazing....
alfredo
(60,082 posts)Last edited Thu Aug 5, 2021, 09:57 AM - Edit history (1)
yonder
(9,686 posts)alfredo
(60,082 posts)Big fan of Pina
Iggo
(47,597 posts)Last edited Sat Aug 7, 2021, 09:46 AM - Edit history (1)
I didnt even notice til almost two minutes in.
(When a girl is twirling, nothing else matters.)
TexasBushwhacker
(20,254 posts)by keeping the length of the pendulums the same but having balls that were lighter and heavier.
eppur_se_muova
(36,317 posts)(At least neglecting friction and air resistance.)
https://en.wikipedia.org/wiki/Pendulum_(mathematics)#Rule_of_thumb_for_pendulum_length
burrowowl
(17,656 posts)onethatcares
(16,207 posts)I really like "Stairway to Heaven".....never though I'd hear it played on the piano..
2naSalit
(86,943 posts)That was a cool display of the energy forms on the planet or something. I wonder how they went about deciding which colors were place in what place in the lineup of the spheres.
krispos42
(49,445 posts)Upthevibe
(8,107 posts)Amazing!
Stuart G
(38,458 posts)Ocelot II
(115,985 posts)See the explanations elsewhere in this thread.
3catwoman3
(24,122 posts)...on your desk?!