#bondi mass

Although there are no particles that are known to us to have negative mass, physicistsin the 1950s( primarily Hermann Bondi, William B. Bonnor  and  Robert L. Forward)explored the physics of what would happen if we had negative mass.

The most interesting case is when we have a positive and negative mass:

There is a push that repels the positive mass from the negative mass, and a pull that attracts the negative mass towards the positive one at the same time through eternity.

This is known as ‘runaway motion effect’ .

One bizarre consequence (among many others) of the runaway effect is that gas containing a mixture of positive and negative matter particles will have the positive matter portion increase in temperature without bound.

However, the negative matter portion gains negative temperature at the same rate without bounds but somehow mysteriously net temperature of the gas would still have not changed all this while. *

Just a random factoid that we thought we would share on this Valentine’s day. Have a great day!

*Check out more bizarre consequences 

** Source paper : Negative mass in General Relativity, Bondi