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Chemical Reaction Changes Color Over and Over
DancingFountain writes "If you have taken a college chemistry class, you may have seen this fantastic demonstration. When two clear liquids are mixed, they immediately turn yellow, and then undulate back and forth between blue-black and yellow in a mesmerizing display. Wired Science explains that the reaction, which was developed by two high school science teachers, has been rigorously studied but not fully explained."
During this period when half of those running for office are being accused of changing their mind every 15 minutes, I expect many of these jokes to be posted.
Perpetual motion is impossible. Fundamentally. Furthermore, some chemical reactions take in heat instead of giving it off. But back to the main point, perpetual motion contradicts the second law of thermodynamics, and as a consequence, if perpetual motion machines did exist, almost everything we know about physics would be wrong.
In Repressive Burma, it's not just your connection that dies. slashdot.org/comments.pl?sid=314547&cid=20819199
No.
In fact, that's the answer to all questions of the form "So, can you use X to make a perpetual motion machine?".
Conservation of energy is a *VERY* well established scientific fact.
No. Conservation is a law - a postulate. Something that we're extremely certain that can't prove using other laws, but that has never, ever been wrong once. That is the fact. If we found something that violated this law, then it would no longer be considered a law. Personally, I don't consider overwhelming evidence that something has always happened a particular way within the observation of man proof that it always did or always will. Don't get me wrong: I'd never take a bet that a perpetual motion machine is going to work, but I'm not going to go around believing that reality is 100% certain to work the way that I think it does, either.
The system eventually reaches equilibrium, and the cycle stop
Apparently goes through about 10 cycles, according to Wikipedia.
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