Word: massed
(lookup in dictionary)
(lookup stats)
Dates: during 1990-1999
Sort By: most recent first
(reverse)
...cast my vote for Elvis Presley. the late John Lennon reportedly said: "Without Elvis there would be no Beatles." FRANCES M. GLOSTER Springfield, Mass...
There's Henry Ford, who perfected ways to mass-produce the horseless carriages developed in Germany by Gottlieb Daimler and others. The car became the most influential consumer product of the century, bringing with it a host of effects good and bad: more personal freedom, residential sprawl, social mobility, highways and shopping malls, air pollution (though the end of the noxious pollution produced by horses) and mass markets for mass-produced goods...
Einstein went on to show that energy and matter were merely different faces of the same thing, their relationship described by the most famous equation in all of physics: energy equals mass multiplied by the speed of light squared, E=mc2. Although not exactly a recipe for an atomic bomb, it explained why one was possible. He also helped resolve smaller mysteries, such as why the sky is blue (it has to do with how the molecules of air diffuse sunlight...
...very important consequence of relativity is the relation between mass and energy. Einstein's postulate that the speed of light should appear the same to everyone implied that nothing could be moving faster than light. What happens is that as energy is used to accelerate a particle or a spaceship, the object's mass increases, making it harder to accelerate any more. To accelerate the particle to the speed of light is impossible because it would take an infinite amount of energy. The equivalence of mass and energy is summed up in Einstein's famous equation E=mc2, probably...
Among the consequences of this law is that if the nucleus of a uranium atom fissions (splits) into two nuclei with slightly less total mass, a tremendous amount of energy is released. In 1939, with World War II looming, a group of scientists who realized the implications of this persuaded Einstein to overcome his pacifist scruples and write a letter to President Roosevelt urging the U.S. to start a program of nuclear research. This led to the Manhattan Project and the atom bomb that exploded over Hiroshima in 1945. Some people blame the atom bomb on Einstein because he discovered...