Black Hole Event Horizon Area

An event horizon is a boundary in spacetime beyond which events cannot affect an outside observer.

The event horizon area is proportional to the mass of the black hole squared.

Formula

QuantityVariable["A", "Area"] == Quantity[16*Pi, "GravitationalConstant"^2/"SpeedOfLight"^4]*QuantityVariable["M", "Mass"]^2

symbol	description	physical quantity
A	event horizon area	"Area"
M	mass	"Mass"

Get the resource:

In[1]:=

Out[1]=

Get the formula:

In[2]:=

Out[2]=

Use some values:

In[3]:=

$FormulaData[ ResourceObject[ "Black Hole Event Horizon Area"], {QuantityVariable["A","Area"] -> Quantity[1.`*^11, ("Meters")^2]}]$

Out[3]=