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Apr
18
answered Stanford: “Objects in spacetime all move at constant speed $c$.” Are they right?
Apr
16
answered Symbol $p^{0}$ of particle
Apr
12
answered What's the problem with light traveling at speed higher than $c$?
Mar
19
answered Pendulum motion equation issue
Mar
19
answered What is the sign of the energy exerted by a man sitting in the back of a boat pulling a canoe?
Mar
17
answered Meaning of the Vector Wave Equation
Mar
13
answered Perspective Redux (why objects seem smaller as the distance increases)
Feb
29
answered Does light in vacuum actually travel at the speed of light?
Feb
26
answered Can light be warped by a magnetic field?
Feb
26
answered What's the difference between mechanical and electromagnetic waves?
Feb
16
answered What is the connection between Newton's laws of motion and his law of gravitation?
Feb
16
answered Why does the chemical potential vanish for Bose Einstein condensate?
Dec
29
answered How do I describe the order of events in spacetime?
Dec
21
answered Does Quantum Mechanics say that anything is possible?
Nov
29
answered Geodesic equation (free particle)
Nov
29
answered Does voltage always cause current?
Nov
29
answered How to prove the average velocity formula without calculus
Nov
29
answered Can we find a vector if its dot product and cross product with another vector is given?
Nov
24
answered Why does the critical angle for refraction exist?
Nov
21
answered Clarification about first spherical harmonic