FREE ESSAY ON ALBERT EIENSTEIN

ALBERT EIENSTEIN

ALBERT EINSTEIN
The German-American physicist Albert EinsteiN, contributed more than any other scientist
to the 20th-century . Born in the town of Ulm, Germany, Mar. 14, 1879, HE then later died
in Princeton, N.J., Apr. 18, 1955. In the wake of World War I, Einstein's theories,
especially his theory of relativity, seemed to many people to point to a pure quality of
human thought, one far removed from the war and its aftermath. Seldom has a scientist
received such public attention for having the ability for learning thet he had.
in 1905, Einstein examined the phenomenon discovered by Max Planck, according to which
electromagnetic energy seemed to be emitted from radiating objects in quantities that
were ultimately discrete. The energy of these emitted quantities--the so-called
light-quanta--was directly proportional to the frequency of the radiation. This
circumstance was perplexing because classical electromagnetic theory, based on Maxwell's
equations and the laws of thermodynamics, had assumed that electromagnetic energy
consisted of waves propagating in a hypothetical, all-pervasive medium called the
luminiferous ether, and that the waves could contain any amount of energy no matter how
small. Einstein used Planck's quantum hypothesis to describe visible electromagnetic
radiation, or light. According to Einstein's heuristic viewpoint, light could be imagined
to consist of discrete bundles of radiation. Einstein used this interpretation to explain
the photoelectric effect, by which certain metals emit electrons when illuminated by
light with a given frequency. Einstein's theory, and his subsequent elaboration of it,
formed the basis for much of quantum mechanics.
Another of Einsteins theories concerned statistical mechanics, a field of study that had
been elaborated by, among others, Ludwig Boltzmann and Josiah Willard Gibbs. Unaware of
Gibbs' contributions, Einstein extended Boltzmann's work and calculated the average
trajectory of a microscopic particle buffeted by random collisions with molecules in a
fluid or in a gas. Einstein observed that his calculations could account for Brownian
motion, the apparently erratic movement of pollen in fluids, which had been noted by the
British botanist Robert Brown. Einstein's paper provided convincing evidence for the
physical existence of atom-sized molecules, which had already received much theoretical
discussion. His results were independently discovered by the Polish physicist Marian von
Smoluchowski and later elaborated by the French physicist Jean Perrin.
Albert has contributed more theories that help us during everyday life then anyone ever
has. He has explaned what was expaned before him in an incorrect way. If he was never
born, we would think of the world in a completly different manner. In my opinion, he has
benifitted the world more then anyone has ever did.