|Albert Einstein physics
All motion is relative except for the speed of light, which is constant for every observer no matter how fast the observer moves relative to the light emitter. As a body in motion approaches the speed of light its energy and therefore its mass approaches infinity. Thus Albert Einstein explained how Maxwell’s equations work for rigid bodies in motion. Essentially, physical laws are not changed by the motion of the framework in which they are tested.
In 1905, Einstein realized that E = mc2 —the energy of an object is equivalent to its mass multiplied by the square of the speed of light. In 1939, aware of Hitler’s efforts to build an atomic bomb, Einstein helped persuade President Roosevelt to push the U.S. to be the first to develop one. In 1950, Einstein analyzed the grave global risks of the nuclear arms race, and called for the “peaceful coexistence of nations.”
I lie under blankets, and my window is open to the night. A jet warbles through clouds in his southerly descent. A freight train comes closer from possibly any direction. Echos fail to distinguish north from south, east from west. The big world is flooded with air against my ears.