What is time, and why does it seem to flow in only one direction? This video explores modern physics’ take on time—from the ...

Albert Einstein's theory of relativity is actually two separate theories: his special theory of relativity, postulated in the 1905 paper, The Electrodynamics of Moving Bodies and his theory of general ...

Special relativity is a foundational research area in theoretical physics that studies the structure of spacetime and physical laws in inertial reference frames, assuming the invariance of the speed ...