- #1
Cyclotron
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Why does light bend when it encounters a black hole or a star?
Does a black hole have a refractive index? It must depend on its mass if it does.
A star can produce an effect knows as gravitational lensing which bends light in much the same way as an optical lens bends light, how does this happen since light is massless?
Does a black hole have a refractive index? It must depend on its mass if it does.
A star can produce an effect knows as gravitational lensing which bends light in much the same way as an optical lens bends light, how does this happen since light is massless?