Stephen Hawking- Positivity 'Benchmark'


STEPHEN HAWKING – POSITIVITY ‘BENCHMARK’
British physicist and mathematician Stephen Hawking has made fundamental contributions to the science of cosmology—the study of the origins, structure, and space-time relationships of the universe.
Early life & Education
Stephen Hawking was born in Oxford, England on January 8, 1942. He grew up in a highly educated family. Both of his parents had attended Oxford University and his father, Frank, was a medical researcher. When he was nine, Stephen got very poor grades in school and just managed to be an average student. He was always interested in how stuff works and he took clocks and radios apart, but had trouble putting them back together.

Stephen enjoyed math and science in school where he earned the nickname "Einstein." He wanted to study math at university but Oxford didn't have a math degree at the time so he chose physics and chemistry instead. Stephen found college coursework to be very easy. He enjoyed being a member of the school's boat club as well as classical music. After graduation, he went to Cambridge to study for his PhD.
While Hawking was working on his PhD at Cambridge University, he began to have health issues. His speech became slurred and he became very clumsy, often dropping items or falling for no reason. After going through a series of tests, doctors discovered that Hawking had a disease called ALS (also called Lou Gehrig's disease). At the time, the doctors said he only had a few years to live.
Theory of singularity
Hawking made his first major contribution to science with his idea of singularity, a work that grew out of his collaboration (working relationship) with Roger Penrose. A singularity is a place in either space or time at which some quantity becomes infinite (without an end). Such a place is found in a black hole, the final stage of a collapsed star, where the gravitational field has infinite strength. Penrose proved that a singularity could exist in the space-time of a real universe.
Drawing upon the work of both Penrose and Albert Einstein (1879–1955), Hawking demonstrated that our universe had its origins in a singularity. In the beginning all of the matter in the universe was concentrated in a single point, making a very small but tremendously dense body. Ten to twenty billion years ago that body exploded in a big bang that initiated time and the universe. Hawking was able to produce current astrophysical (having to do with the study of stars and the events that occur around them) research to support the big bang theory of the origin of the universe and oppose the competing steady-state theory.
Hawking's research led him to study the characteristics of the best-known singularity: the black hole. A black hole's edges, called the event horizon, can be detected. Hawking proved that the surface area (measurement of the surface) of the event horizon could only increase, not decrease, and that when two black holes merged the surface area of the new hole was larger than the sum of the two original.
Hawking's continuing examination of the nature of black holes led to two important discoveries. The first that black holes can give off heat opposed the claim that nothing could escape from a black hole. The second concerned the size of black holes. As originally conceived, black holes were immense in size because they were the end result of the collapse of gigantic stars. Hawking suggested the existence of millions of mini-black holes formed by the force of the original big bang explosion.
Unified field theory
In the 1980s Hawking answered one of Einstein's unanswered theories, the famous unified field theory. A complete unified theory includes the four main interactions known to modern physics. The unified theory explains the conditions that were present at the beginning of the universe as well as the features of the physical laws of nature. When humans develop the unified field theory, said Hawking, they will "know the mind of God."
Publications
As Hawking's physical condition grew worse his intellectual achievements increased. He wrote down his ideas in A Brief History of Time: From the Big Bang to Black Holes. It sold over a million copies and was listed as the best-selling nonfiction book for over a year.
In 1993 Hawking wrote Black Holes and Baby Universes and Other Essays, which, in addition to his scientific thoughts, contains chapters about Hawking's personal life. He coauthored a book in 1996 with Sir Roger Penrose titled The Nature of Space and Time. Issues discussed in this book include whether the universe has boundaries and if it will continue to expand forever. Hawking says yes to the first question and no to the second, while Penrose argues the opposite. Hawking joined Penrose again the following year in the creation of another book, The Large, the Small, and the Human Mind (1997). In 2002 he was likewise celebrating the publication of The Universe in a Nutshell. Despite decreasing health, Hawking traveled on the traditional book release circuit.
Honors and commitments
Hawking's work in Modern Cosmology and in theoretical Astronomy and Physics is widely recognized. He became a fellow of the Royal Society of London in 1974 and five years later was named to a professorial chair at Cambridge University that was once held by Sir Isaac Newton (1642–1727). Beyond these honors he has earned a host of honorary degrees, awards, prizes, and lectureships from the major universities and scientific societies of Europe and America. By the end of the twentieth century Stephen Hawking had become one of the best-known scientists in the world. His popularity includes endorsing a wireless Internet connection and speaking to wheelchair-bound youth. He also had a special appearance on the television series Star Trek

Comments

Popular posts from this blog

Bosom friend

self introduction 1

Business Communication