[ExI] The Big Black Hole Question

[scerir]

> Regarding the astronomy use of the term, it is fun to think about.  Under
> sufficient pressure, gravity overpowers everything and electrons are pushed
> into the protons, which form neutrons, kerBOOM, supernova, result, huge ball
> of neutrons.  COOL!  But... what if that neutron star is so big, it crushes
> the neutrons?  What do neutrons crush into?  We don't know.  Our equations
> fail us.  It's all a big virtual reality, I tells ye.  Wicked, evil it is.
> The devil invented the whole system.  Rage against it.
> 
> spike
 
Quark stars are possible. 

But I remember that Daniel Greenberger wrote about an interesting uncertainty principle: delta m x delta tau > h, where m is mass and tau is proper time. In his theory, proper time and mass are physical quantities measured in a particular system of reference: the particle rest frame. Therefore, the proper time uncertainty delta tau expresses the standard deviation of measures from external frames of the reading an imaginary clock situated on the particle. 

Interesting the deep connection between mass and (proper) time.

https://link.springer.com/book/9789819507313?srsltid=AfmBOoq6GQOG9_GyIN_djz2xudlwkszhypfd0xyyyOL3LCFV7LiaNcYj