Speed of Light Calculator
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⚡ Speed of Light Calculator

Calculate light speed in different media and relativistic effects

📐 Speed of Light Formulas

c = c₀ / n
c = λ × f
E = mc²
c = speed in medium, c₀ = vacuum speed, n = refractive index, λ = wavelength, f = frequency
Speed of Light: -
Wavelength: -
Frequency: -
Energy: -

💡 Tips & Information

  • Speed of light in vacuum: 299,792,458 m/s
  • Light slows down in denser media
  • Wavelength and frequency are inversely related
  • E = mc² relates mass and energy
  • Refractive index affects light speed and bending

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