Special and general relativity
Calculate both the classical (Newtonian) and relativistic speed of an electron accelerated through an electric potential.…
Calculate relativistic length contraction (Lorentz contraction) for objects moving near the speed of light. Uses L = L₀√(1−v²/c²)…
Add two velocities the relativistic way using Einstein's velocity addition formula u = (v + w) / (1 + vw/c²). Compare the…
Calculate how much slower time passes near massive objects using Einstein's general relativity. Compare time lapse on Earth,…
Calculate relativistic kinetic energy for objects moving near the speed of light. Uses KE = (γ−1)m₀c². Outputs energy in…
Calculate relativistic travel time to any star or galaxy. Uses the relativistic rocket equation to find crew proper time,…
Calculate relativistic time dilation using the Lorentz factor. Enter velocity in m/s, km/h, mph, ft/s, or as a fraction of…
Calculate the energy equivalent of any mass using Einstein's famous formula E = mc². Supports metric (kg, g, mg, t) and imperial…
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