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Lots and lots of gears.
Werner Vesteraas
Oslo, Norway
Post a reply to this message
Attachments:
Download 'gears.jpg' (65 KB)
Preview of image 'gears.jpg'
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news:428a7d78@news.povray.org...
> Lots and lots of gears.
Thought-provoking image, Werner. Wanted to stop reading and looking at the
group here and give yours a reply since no one had done so yet.
Makes me think of either infinity or what they could turning at the end. Or
maybe more interesting... perhaps they don't move! Like some kind of trick
of the mind, to think they are in motion but might actually be motionless,
as is the image itself!
Bob Hughes
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Thank you for your reply, Bob! I'm quite fascinated of gears and clocks.
My image consists of 512 gears, each fitted with a pinion gear, where the
ratio between the pinion gear and the drive gear is 12.
This means that you have to turn the first gear 12 times around to make the
second gear rotate 360 (12^1) degrees. To make the third gear rotate 360
degrees, you have to rotate the first gear 144 times (12^2), and so on...
And finally, to turn the last gear 360 degrees, you must turn the first gear
12^511 times around... A very slow movement!
Werner
Oslo, Norway
"Bob Hughes" <bob### [at] charter net> wrote in message
news:428e8694$1@news.povray.org...
> news:428a7d78@news.povray.org...
>> Lots and lots of gears.
>
> Thought-provoking image, Werner. Wanted to stop reading and looking at the
> group here and give yours a reply since no one had done so yet.
>
> Makes me think of either infinity or what they could turning at the end.
> Or maybe more interesting... perhaps they don't move! Like some kind of
> trick of the mind, to think they are in motion but might actually be
> motionless, as is the image itself!
>
> Bob Hughes
>
>
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> Thank you for your reply, Bob! I'm quite fascinated of gears and clocks.
> My image consists of 512 gears, each fitted with a pinion gear, where the
> ratio between the pinion gear and the drive gear is 12.
>
> This means that you have to turn the first gear 12 times around to make
> the
> second gear rotate 360 (12^1) degrees. To make the third gear rotate 360
> degrees, you have to rotate the first gear 144 times (12^2), and so on...
> And finally, to turn the last gear 360 degrees, you must turn the first
> gear
> 12^511 times around... A very slow movement!
I saw this idea somewhere in a "modern" sculpture, it was a series of gears
(10 or 12?), on one end there was an electric motor rotating the first
gear, the other end was firmly attached to a concrete block. It said quite
a few (hundreds?) years had to go before this last end moved appreciably.
--
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby
Post a reply to this message
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Jellby wrote:
>
>
>>Thank you for your reply, Bob! I'm quite fascinated of gears and clocks.
>>My image consists of 512 gears, each fitted with a pinion gear, where the
>>ratio between the pinion gear and the drive gear is 12.
>>
>>This means that you have to turn the first gear 12 times around to make
>>the
>>second gear rotate 360 (12^1) degrees. To make the third gear rotate 360
>>degrees, you have to rotate the first gear 144 times (12^2), and so on...
>>And finally, to turn the last gear 360 degrees, you must turn the first
>>gear
>>12^511 times around... A very slow movement!
>
>
> I saw this idea somewhere in a "modern" sculpture, it was a series of gears
> (10 or 12?), on one end there was an electric motor rotating the first
> gear, the other end was firmly attached to a concrete block. It said quite
> a few (hundreds?) years had to go before this last end moved appreciably.
>
There is an exhibit at a science museum nearby where a series of gears
and various mechanisms enthralls the kids (and some adults). A handle
at the right hand end must be rotated.
(From memory) Every ~10,000 revolutions a small marble drops down a
chute to be collected.
Every ~100,000 revolutions a hammer falls and strikes a bell.
Every ~1,000,000 revolutions, another hammer smashes a lighbulb
etc.
I don't recall all of the 'rewards' but it certainly attracts you to
turn that handle.
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