FactChecker's latest activity
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'In mathematics, you don't understand things. You just get used to them.' Which he got from his good friend John von Neumann The exact... -
FactChecker reacted to kuruman's post in the thread High School Geometry Puzzle: Cut The Figure to Make Two Identical Parts with
Like.
Does "identical" mean that after the object is cut into two, one can superimpose the two pieces into one with no more than a simple... -
FactChecker replied to the thread A question about quantum entanglement."I think I can safely say that nobody understands quantum mechanics." "in mathematics you don't understand things. You just get used to...
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FactChecker reacted to Filip Larsen's post in the thread High School Long rod in orbit with
Informative.
Gravity gradient has even been used as a passive attitude stabilization mechanism, where the orbiters minor inertial axis are stable in... -
Velocities are a distraction. That's just initial conditions. You want to focus on dynamics. The only force acting here is gravity...
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FactChecker replied to the thread High School Long rod in orbit.I think I see why. (Please stop me if my amateur ideas are off the track.) Suppose it starts parallel with orbital speed ##V_o##, and...
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FactChecker reacted to Bandersnatch's post in the thread High School Long rod in orbit with Informative.
A rod would try to orient itself radially, due to tidal forces, in the same way as tidally-deformed ellipsoids of planets and moons...
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FactChecker replied to the thread High School Long rod in orbit.Good point! I guess there is no damping force, so that seems right.
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My rule of thumb is, if it can oscillate then it will.
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FactChecker replied to the thread High School Long rod in orbit.As a casual amateur, here are my two cents. Consider some extreme cases: 1) If the rod has the exact curvature of a circular orbit...
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FactChecker reacted to Matterwave's post in the thread Undergrad How can light be a wave and particle at the same time? with Like.
The "light is both a particle and a wave" description is a rather outdated and non-precise description of our understanding of light...
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FactChecker replied to the thread Undergrad The natural numbers and logical consequences of them.You probably want to say it is a (?? thing ??) that is greater than any natural number. But what is (?? thing ??)? What are its other...
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FactChecker replied to the thread Undergrad The natural numbers and logical consequences of them.You asked about the number of items in the set of natural numbers and how they can be partitioned, so I don't think any other...
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FactChecker replied to the thread Hi! Can someone explain about Differential Equations?.It's an equation where the change of a variable is involved. That is very common and there are thousands of examples. Here are a couple...
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FactChecker reacted to kuruman's post in the thread High School Does this equation (Einstein’s field equations in general relativity) equal 12? with
Haha.
The girl got it wrong. Actually, the answer is 42. See https://simple.wikipedia.org/wiki/42_(answer)