The Quest for Relativity
From Einstein's thought experiments to modern physics — interactive explorations of how space and time interweave.
Time Dilation
Clocks tick slower at high velocities. Experience how time stretches near the speed of light.
Length Contraction
Objects compress in their direction of motion. See the universe flatten at relativistic speeds.
Mass-Energy
E=mc2: the most famous equation reveals mass and energy are two faces of the same coin.
Spacetime Curvature
Gravity is geometry. Massive objects bend the fabric of spacetime itself.
"Imagination is more important than knowledge."Albert Einstein