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`C^2 = 931.46 (MeV) / u`

931.46

The **Speed of Light Squared (C ^{2})** is 931.46 mega electron volts (MeV) per atomic mass units (u). This constant is often used in Einstein's famous E = mc

- E = m•c² (mass/energy equivalent)
- m = E/c² (mass from energy)
- E = m•γ•c² (mass/energy equivalent not at rest)
- E = h•ν (Quantum Energy)
- p = m•γ•v (Relativistic Momentum)
- c (Speed of light) = 2.99792458E8 m/s
- c² (Speed of Light Squared) = 931.46 MeV/u
- Lorentz factor (`gamma`)
- KE ≈ m(1+v²/(2c²)-1)c² (Relativistic Kinetic Energy)