What physical mechanism supports a white dwarf against further gravitational collapse?

Answer

Electron degeneracy pressure

Unlike active stars supported by fusion, a white dwarf is supported by electron degeneracy pressure, a quantum mechanical phenomenon resisting further compression.

What physical mechanism supports a white dwarf against further gravitational collapse?

#Videos

Why Do White Dwarfs Still Radiate Heat? - Physics Frontier - YouTube

temperaturestarastrophysicswhite dwarfLuminosity