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This mind-bending machine completes one turn every 2.3 trillion years (Original Post) Flying Squirrel Nov 2013 OP
Hah, hah, Nature... She can mess up the most careful plans. hunter Nov 2013 #1
Yeah, it doesn't sound like it's going to last too long, even now. AtheistCrusader Nov 2013 #3
I suppose there's nothing truly wrong with this but it could have been done in a cooler way. BlueJazz Nov 2013 #2
They need nikto Nov 2013 #4
So, this is a simulation of the GOP method of running the House then? Rosco T. Nov 2013 #5
DUzy! klook Nov 2013 #14
I automatically assumed that the gears were turning very slowly, hedgehog Nov 2013 #6
Plus the Elasticity of the metal in the Gear Train. PeoViejo Nov 2013 #8
Since all atoms are constantly in motion passiveporcupine Nov 2013 #9
My brain hurts! hedgehog Nov 2013 #10
This is nonsense. Nobody can possibly know if the last gear is even moving at all! Towlie Nov 2013 #7
"Nobody can possibly know if the last gear is even moving at all!" greiner3 Nov 2013 #16
If you take into account the stack up tolerances and backlash of the gears, it could be off by about Snake Plissken Nov 2013 #11
Why? Peace Patriot Nov 2013 #12
If the 1st gear is about 5cm in radius muriel_volestrangler Nov 2013 #13
What a waste! Rain Mcloud Nov 2013 #15
Beautiful gear sets! dreampunk Nov 2013 #17

hunter

(38,340 posts)
1. Hah, hah, Nature... She can mess up the most careful plans.
Sun Nov 3, 2013, 08:09 PM
Nov 2013

You could build this thing out of diamond, powered by the radiation of a small black hole in a remote region of the universe, and it still wouldn't last...

One dances with the chaos or dies.

 

BlueJazz

(25,348 posts)
2. I suppose there's nothing truly wrong with this but it could have been done in a cooler way.
Sun Nov 3, 2013, 11:38 PM
Nov 2013

We'll be long gone before the last shaft moves a 100th of it's rotation

hedgehog

(36,286 posts)
6. I automatically assumed that the gears were turning very slowly,
Mon Nov 4, 2013, 01:17 PM
Nov 2013

but was wondering how much power was lost in each step down, and noting that the block is square, meaning that turning it would mean enough power to crush the wooden board.....so at some point I expect the mechanism to be jammed.

 

PeoViejo

(2,178 posts)
8. Plus the Elasticity of the metal in the Gear Train.
Mon Nov 4, 2013, 02:47 PM
Nov 2013

Like a Torque Tube, it will just store the Energy.

passiveporcupine

(8,175 posts)
9. Since all atoms are constantly in motion
Mon Nov 4, 2013, 06:32 PM
Nov 2013

I wonder if a turn at that speed would just mean the shaft in the concrete rotates without moving the concrete at all.

Towlie

(5,332 posts)
7. This is nonsense. Nobody can possibly know if the last gear is even moving at all!
Mon Nov 4, 2013, 01:32 PM
Nov 2013

With the inevitable slop in the gear train, the last gear is probably not moving at all. Any moving that it does will be in quick spurts as friction is overcome, and there may even be times when it moves backward. All they can really know with any precision is the average revolution rate over some very long period, and the minimum value of that period is almost certainly longer than this device will even exist.

 

greiner3

(5,214 posts)
16. "Nobody can possibly know if the last gear is even moving at all!"
Thu Nov 7, 2013, 02:09 PM
Nov 2013

Well, actually they can via lasers.

Physics is the way IT HAS TO MOVE and if the drill did not move, the machine is operating in a parallel universe, with different physical properties.

Snake Plissken

(4,103 posts)
11. If you take into account the stack up tolerances and backlash of the gears, it could be off by about
Tue Nov 5, 2013, 12:12 AM
Nov 2013

a trillion years

muriel_volestrangler

(101,405 posts)
13. If the 1st gear is about 5cm in radius
Tue Nov 5, 2013, 08:30 AM
Nov 2013

then its circumference is about 31cm; 200 rev/min = 0.31*200/60 = 1 m/s speed on its circumference, roughly.
So the 2nd gear goes at 0.02m/s
3rd: .0004 m/s
...
6th: 3.2 nanometres/sec. Roughly the diameter of 12 iron atoms. Or about 2mm in a week.

8th gear: the diameter of a single iron atom in about 200 seconds. Less than a micron in a week - he could have set this one in concrete comfortably, I think.

10th gear: the diameter of a single iron atom in nearly 6 days - if he ran the machine that long.

12th gear: the diameter of a single iron atom in about 40 years.

 

Rain Mcloud

(812 posts)
15. What a waste!
Wed Nov 6, 2013, 11:25 PM
Nov 2013

The money used to make that ridiculous machine could have gone to a corporate CEO so the money could go into a numbered offshore account and in an amazing coincidence,re-entered the economy in roughly 2.3 Trillion years!

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