Why is (rest) mass not discrete?
90917
Why do we have an elementary charge but no elementary mass?
22090
Does the (relativistic) mass change? Why?
5987
Why is NON DISCRETE logarithm problem not hard as the DISCRETE logarithm problem (so computationally hard)?
1584
Why does spin have a discrete spectrum?
109427
The difference between discrete and continuous variables
122357
Discreteness of Spacetime and Violation of Lorentz symmetry
84892
What truly is mass, and is there a direct way to measure it?
64941
Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?
154951
Is the solution to a question regarding four smaller masses on a rotating hollow sphere accurate?
42291
Why is spacetime curved by mass but not charge?
130347
Why do objects with different masses fall at the same rate?
158827
Inertial forces and centre of mass
15502
Does non-mass-energy generate a gravitational field?
1048
Discreteness of set of energy eigenvalues
51589
Can virtual particle have mass?
3535
Is time continuous or discrete?
137061
Understanding the different kinds of mass in gravity