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One of my brothers and I once built a trebuchet on a sandy beach using a middling-sized tree trunk as the throwing arm and a washtub full of rocks and wet sand as the weight. Our fulcrum was a steel crowbar—the longer and straight true crowbar rather than the shorter S-shaped wrecking bar—supported ...

(Gravity isn’t a force, but rather an accelerant) This might sound like more mumbo-jumbo but it's actually a true and important point that High Spy is expressing with a non-standard word. Or at least, there is a true and important point which somebody might well express in this way, so it only take...

I've learned more from this thread than I had known before about how the LDS movement survived Smith's death and rallied behind Brigham Young. My guess would be that Smith never made real succession plans because he was expecting to live on for many more years as sole Prophet. He might have recognis...

I don't think I do have a favourite. The one that I'm just about to finish and submit real soon now is usually the current favourite. Usually there's at least one or two things that I really like about a paper, but you spend so long fussing with all the details that by the time it's finished a lot o...

As far as teaching goes, technically I can teach whatever I want. I'm required to offer what amounts to one course each semester, but I have Lehrfreiheit —the freedom to decide for myself exactly what it is that I'll teach. In my department nobody is enough of a jerk to teach useless courses and for...

"The age of the universe" is the age that would be measured by a co-moving observer—that is, by an observer for whom the expansion of the universe is equal in all directions. That kind of co-moving observer is a lot like the old Newtonian concept of an observer who is at absolute rest. And it's true...

We had to derive so many equations that I wouldn't be surprised if I have derived [Kepler‘s Laws] lol. The ones I remember working on are the laws of thermodynamics. Ugh. I’m sure you can derive them. You’re a physicist. (It’s okay if it might take you a while to remember and think. Me too. I’m goi...

Kepler's Laws are not "scholarship about scholarship". They are how the planets move. People have watched those things up there for millennia. Ancient Egyptians marked the patterns quite well. The planets drift around in the night sky, over weeks and months and years, gradually cycling back around t...

I have only read a bit about the philosophy of free will, but I have thought a lot about physical determinism. Lately I've had an idea that seems to me to put things in a new light; but perhaps it's not as good as I think. The idea is: Whatever is controlling you is you. It seems to me to make sense...

Can you derive Kepler's Laws from your theory? hahaha I don't have to do s h 1 t in order to start trying to explain how to go beyond general relativity. All I have to do is be a BS detector. :D Everything's a Scam :mrgreen: :geek: :ugeek: I'm going to take that as a "No." Isaac Newton derived Kepl...