Schwarzschild, Karl (1873-1916)

Karl Schwarzschild published his first paper
on orbits at the age of 16.
In 1906 he derived the condition
for an atmosphere to be stable against
convection. The essence of the
Schwarzschild instability criteria is that
the atmosphere must decrease in entropy
as you move outward.
In 1914 he volunteered for military service, while
on the Russian front he give the first exact solution of Einstein's general gravitational equations, giving an understanding of the geometry of space near a point mass. He also
made the first study of black holes showing that bodies of sufficiently large mass would have an escape velocity exceeding the speed of light and so could not be seen.

He died of an aliment caught at the Russian front. He is the father of
Martin Schwarzschild