Why the imaginary unit in time axis?
664
Minkowski's complex Euclidean space vs. the real pseudo-Euclidean version
13786
A question in Special Relativity
131705
Relativity Of Simultaneity Confusion
67635
Why does $\epsilon_0=1$ in CGS units?
87633
What's the physical significance of the off-diagonal element in the matrix of moment of inertia
53661
Intuition surrounding units in $R[x]$
121904
Regarding the possibility of Closed Timelike Curves
47779
Why does this integral have a complex component?
86381
What is imaginary time?
65039
What is the reason of $dT/dh = 0$ in the gas column?
149533
How do the radian have a unit?
156782
Confused about complex numbers
103359
Why are radians more natural than any other angle unit?
131814
Integral with differential is purely imaginary
125883
Moment of inertia: why $\mathrm{dI}=r^2\mathrm{dm}$ instead of $\mathrm{dI}=m\mathrm{dr^2}$?
118273
Intuition - why does the period not depend on the amplitude in a pendulum?
4156
What is $\Bbb R^{\times}$? [unit group, ring to "times" power]