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3 results for “black hole”

Formulae (3)

r_s = \frac{2GM}{c^2}

Event horizon radius of a black hole.

T = \frac{\hbar c^3}{8\pi G M k_B}

Temperature of the radiation a black hole emits.

r_{ph} = \frac{3GM}{c^2}

Radius where gravity bends light into a circular orbit.