Negative masses
44342
Negative Mass and gravitation
83677
Use of negative frequency for the sake of simplifying mathematics?
22097
How do I disable negative scaling?
155218
A physical explanation for negative kelvin temperatures
14373
In physics sometimes we find energy that is negative. What does the negative sign indicate?
14354
Mass defect- From where mass is being lost?
23448
Renormalized mass
136839
Is there a known isotope that generates anti-matter?
65314
Interaction term positive while components are negative?
114290
Is it possible to have a singularity with zero mass?
74211
Protons and Neutrons Overshoot Actual Mass?
121299
Planck mass is about the mass of one eyebrow hair
28737
Negative binomial coefficient
123054
How can we have negative work in electrostatics, if $W=(\epsilon_0/2)\int\! E^2\ \mathrm{d}\tau$?
154951
Is the solution to a question regarding four smaller masses on a rotating hollow sphere accurate?
150453
How do I display an expression with negative powers?
24189
What exactly is a bound state and why does it have negative energy?