4 ms·
Beholding the Big Bang, 2009, by Arthur Ganson A series of 12 pairs of reduction gears, each at a 50:1 ratio. On the left, a motor spins at a high rpm; on the
by olooney 7y ago
Beholding the Big Bang, 2009, by Arthur Ganson
A series of 12 pairs of reduction gears, each at a 50:1 ratio. On the left, a motor spins at a high rpm; on the right, the drive shaft is embedded into a concrete block. It will be 13.7 billion years before the final gear completes a single rotation.
https://www.youtube.com/watch?v=VCA2whpMCno https://www.youtube.com/watch?v=VCA2whpMCno
- NikolaeVarius 7y agoI wonder what the system as a whole is rated to. I suspect the motor will give out within another decade. I doubt that the system used a super long life motor, but I could be very wrong.
- amichal 7y agoThis is at the MIT museum. I first saw it as a child decades ago and many times sense. The motor has been visibly replaced/refurbed and I'm sure they turn it off at night. All that said, when you see the first gear or two zipping around and stand there and stare at the Nth gear trying to see any movement at all it really drives home how these things scale. As a kid I once watched it for over an hour to see if could see ANY movement in the first gear that looked still.
- nkrisc 7y agoWhile rationally I understand how it works, it just seems to strange that so much movement can so easily be effectively nullified.