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I don't think a tiger will actually fit. When you see them on
TV, they're actually a lot smaller than in real life. |
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Clear bowling balls with all sorts inside them exist. See
<link> with a skull. Personally, I like the idea of a liquid-
core, maybe one of those sealed-ecosystem things with
shrimp inside would be fun. Unless they don't like shocks. |
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//I don't think a tiger will actually fit. When you
see them on TV, they're actually a lot smaller than
in real life.// - couldn’t you just use a much larger
bowling ball? |
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That would certainly help matters. Or you could use a tiger
that's far away. |
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// Personally, I like the idea of a liquid core // |
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That would add some interesting behavior to the motion of
the ball. [a few seconds pass] Now I see this has already
been posted as an idea, three below this one in the same
category. |
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I have seen glass cubes with stuff laser engraved into their
interiors, possibly a confocal effect thing. You could do
that with a large sphere. Making the thing once with CAD
software then making many spheres could make it less
effortful. A pretty math function could be nice too. |
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Then there are those fractal acrylic things from electricity
too... |
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Don't say hamster don't say hamster don't say hamster |
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Fortnum & Mason do very nice ones at Christmas. |
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Wonder if you can make a ball that rolls down the
lane slowly, but building up potential energy that's
put back into motion that speeds up the ball at the
last second to hit the pins with most of the energy
that the bowler put into it. |
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How about a 360 degree LED screen that shows an
animated
image of flames or sparks once the ball senses it's
rolling? |
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// building up potential energy that's put back into motion that speeds up the ball at the last second to hit the pins with most of the energy that the bowler put into it. // |
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"Most" will be doing well. No energy storage system is perfectly lossless, outside school physics textbooks*. So if the ball sets off with energy E and some is absorbed and stored, then reapplied to the ball, the final energy will always be E - deltaE. The remaining energy will be dissipated by frictional heating, air turbulence, or stolen by the tiny green gnomes that live under the bowling lane. |
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The air resistance the ball experiences is proportional to V^2. If the ball is released with velocity V, and rapidly decelerates to V/2, then the air resistance - hence the turbulence, and energy loss - will be proportionately diminished (square law). |
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So a ball that slows down, then speeds up for the final impact, might make some sense after all. It depends how much air resistance contributes to the overall deceleration down the lane. It's probably quite a lot, as the rolling contact resistance of a smooth inelastic sphere on a smooth inelastic surface will be very small. |
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*Or indeed geography textbooks. It's been established that geography textbooks hurled at students by aggressive, psychotic geography teachers can actually strike the victim with more energy than they started with. This is because all geography teachers have turned to the Dark Side of the Force, and are Twisted and Evil. |
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But what's the mechanism to store that energy?
How do you store some percentage of that energy
to put some percentage that energy stored over
say, 90% of the roll into a last split second surge? |
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Without having anything like wheels or plungers
extend out of the ball at the last second, all has to
be internal. |
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The only air friction model I can see is if you have
a drag chute with a heavy weight on it attached to
rubber bands that extends out as the ball rolls,
then snaps back with the weight and hits the ball
at the last second putting some measure of energy
back into the forward movement. |
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Seems very inefficient. Obviously due to the
storage/retrieval loss you're better off just letting
the ball roll with any system. |
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I'm thinking a spring in the middle with a counter
weight that spins the other way when the spring
reaches its extent. It'll be spinning the opposite
direction in the middle then gears engage at the
last second turning that rearword motion into
forward motion. |
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You could also "spin up" the interior ball and have it
engage at the last few seconds to hit the pins with
cannonball force. |
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Could do it the opposite direction and have it act as
a brake as well. Not sure why you'd do that but
"Why?" doesn't figure into this. |
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Yea, guess these are pretty slippery, it'd just slide
slightly slower. |
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But if you did use rubber it might make a cool
squeeling sound. |
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Ok, here's the idea. Screw the original idea. |
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Actually I'm going to post a new idea because this is
so brilliant. |
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//No energy storage system is perfectly lossless,
outside school physics textbooks* |
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So, logically, a bowling ball with a school physics
textbook attached to the inside... |
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