Short answers, pulled from the story.
Albert Einstein published the paper titled On the Electrodynamics of Moving Bodies in September 1905. This document introduced special relativity to the world through just two core assumptions.
The first postulate states that physical laws remain identical for all observers moving at constant speeds relative to one another. The second postulate declares that light travels at a fixed speed regardless of how fast the source or observer moves.
Hermann Minkowski presented papers on spacetime in 1907 that transformed Einstein's equations into a geometric framework known as Minkowski space. He replaced Euclidean geometry with distances called intervals that include both spatial coordinates and a time coordinate marked by a minus sign.
Paul Langevin demonstrated that moving clocks run slower compared to stationary ones when measured from another frame. This effect explains why muons created by cosmic rays reach Earth's surface despite having short lifespans because their internal time slows down due to high velocity.
Albert Einstein derived the formula E equals mc squared in his 1905 paper using conservation laws for energy and momentum. For an object at rest, its momentum vanishes leaving only energy equal to mass times the square of light speed.
Global Positioning System satellites must adjust their internal clocks because they move faster than ground receivers and experience weaker gravity. Modern technology relies on relativistic corrections daily to ensure accurate positioning data.