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Consider the following snapshot from a Geometry-Expressions (GX) ( http://www.geometryexpressions.com ) file: The blue coordinate-frame lines represent our inertial frame, at rest with respect to us. The red coordinate-frame lines represent another inertial...
Should have said last time that space-time "curvature" is relativity code-speak for "acceleration" or "gravitation." It's often something one can feel. Here's an imaginary example. Put a very precise atomic clock...
One of the groups that I have lunch with likes to discuss physics and astronomy. During one of these lunches, there was a bit of confusion about the Theory of Relativity (ToR), with people not being quite sure whether it means that measurements depend...
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