Top network posts

• 39 How far out from the Sun is visible light still sufficient to read a book?
• 35 If all motion is relative, how does light have a finite speed?
• 27 Couldn't we always redefine units so that inertial mass and gravitational mass are equal?
• 26 If clocks themselves are based on light signals, wouldn't we expect the measured speed of light to always be the same constant?
• 23 What is a wave function in simple language?
• 21 Can quantum entanglement be used to coordinate actions at "FTL speeds" without breaking causality or actual faster-than-light communication?
• 21 What do sine, tan, cos actually mean?
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