There is a related concept, the Planck Mass that also involves the 3 most
fundamental constants in nature, the speed of light the Planck constant and
the Gravitational constant. If you take the Planck energy
(c^5*h/2*PI*G)^1/2 and confine it in a box one Planck length
(G*h/2*PI*c^3)^1/2 on a side it will turn into a Black Hole. To find the
Planck Mass we use E=MC^2 and divide the Planck Energy by c^2. The Planck
Mass works out to be .02 milligrams, about the mass of a single grain of
salt; nothing less massive than the Planck Mass can form a Black Hole
regardless of how much you compress it. Some, such as Roger Penrose, think
this marks the boundary between the quantum realm and the realm of
classical physics but most think that's a oversimplification.

 John K Clark

You received this message because you are subscribed to the Google Groups 
"Everything List" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
To post to this group, send email to
Visit this group at
For more options, visit

Reply via email to