Astronomy   View all facts   Glossary   Help
abstraction > mathematical concept > number > quantity > length > radius > gravitational radius
Next radiusHolmberg radius    Upradius    Previous radiusclassical electron radius   

gravitational radius comparison table
Subject is an instance of is a kind of has definition
radius length 
gravitational radiusradius The radius which an object should have in order that light emitted from its surface just ceases to escape from its surface.

Next radiusHolmberg radius    Upradius    Previous radiusclassical electron radius