# 'Month of Equations': What Does The Schwarzchild Radius Really Mean?

### October 11 - The Schwarzchild Radius ### Meaning of Equation

The Schwarzchild Radius represents the ability of a mass to cause curvature in space and time. If an object is crushed to a sphere of Schwarzchild radius, its escape velocity will equal that of light and the object will become a black hole.

Every massive object is associated with five physical quantities: Inertial mass, rest mass energy, Compton wavelength, Schwarzchild radius and the standard gravitational parameter. The Schwarzchild radius actually represents the ability of a mass to curve the space and time. This quantity actually originated from Einstein's field equations of general relativity. Before turning to the physical significance of this radius, let us have a quick look at Einstein's picture of the Universe.

According to Albert Einstein, the universe is a fabric of space and time. Newton developed his laws by considering the fact that space and time are absolute. They are same for everyone, no matter where the person is in the Universe. Einstein said No! Time is not absolute (See this why it isn't absolute). Space and time are affected by mass. To get a picture of it, look at this image below.