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"All in all, I think the episode of 2008 TC3 has proven that the world's astronomical community, at least, is prepared to respond when an object on a collision course is detected. Within just a few hours of its discovery, the digitally connected world knew exactly where and when the object would hit, and also that it posed no threat. It was a wonderful simulation of the first part of the call to arms when a truly threatening object is detected."
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Look, just go read Dot Physics, already...
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"Friction is an interaction between two objects in contact that opposes relative motion of those two objects. It is not something fundamental (like gravity, or electromagnetic force), but it comes up enough that it will be worthwhile to talk about it. "
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"My ultimate goal is to give some insight into the many stories about perpetual motion. To do this, I will first talk about the fundamentals of energy."
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Not that much, but it's a useful exercise to calculate it.
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"The rationale? "Hey! We messed up because we couldn't understand anything! If those physicists and mathematicians hadn't created those arcane instruments, we wouldn't have been able to screw everything up, so clearly, it's their fault!" ...not very convincing."
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