Stephen hawking ppt
- 2. Stephen Hawking is an English theoretical physicist, cosmologist and author. He is best known for his attempts to explain in clear terms the origins of the universe and some of the most complicated aspects of the cosmos and physics. Hawking was the first scientist to offer a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics.
- 3. Early life Stephen Hawking StephenWilliam Hawking was born on 8 January 1942 in Oxford, England. His family had moved to Oxford to escape the threat ofV2 rockets over London. As a child he showed prodigious talents, if unorthodox study methods. On leaving school he got a place at University College, Oxford University where he studied Physics. His physics tutor at Oxford, Robert Berman, later said that Stephen Hawkins was an extraordinary student. He used few books and made no notes, but could work out theorems and solutions in a way other students couldn’t. “My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.” –STEPHEN HAWKING
- 4. On gaining a B.A.Hons in Physics he briefly stayed to study Astronomy but was not interested in observing sun spots so moved toTrinity College,Cambridge where he was able to pursue his passion for theoretical astronomy and cosmology. It was in Cambridge that Stephen Hawking first started to develop symptoms of neuro muscular problems – a type of motor neuron disease.This quickly affected his physical ability. His speech became slurred and he become unable to even feed himself.At one stage, the doctors gave him a life span of three years. However, the progress of the disease slowed down and he has managed to overcome his severe disability to continue his research and active public engagements. At Cambridge a fellow scientist developed a synthetic speech device which enabled him to speak by using a touch pad. Nevertheless, it can still be a time consuming process for him to communicate. Stephen Hawking has taken a pragmatic view to his disability.
- 5. He married Jane Wilde, a language student in 1965. He said this was a real turning point for him at a time when he was fatalistic because of his illness. They later divorced but had three children
- 6. Disability Hawking has a rare early-onset slow-progressing form of Amyotrophic Lateral Sclerosis (ALS), also known as motor neurone disease or Lou Gehrig's disease, that has gradually paralysed him over the decades. ALS is characterized by stiff muscles, muscle twitching, and gradually worsening weakness due to muscles decreasing in size.This results in difficulty speaking, swallowing, and eventually breathing. Hawking had experienced increasing clumsiness during his final year at Oxford, including a fall on some stairs and difficulties when rowing. The problems worsened, and his speech became slightly slurred; his family noticed the changes when he returned home for Christmas and medical investigations were begun. The diagnosis of motor neurone disease came when Hawking was 21, in 1963. At the time, doctors gave him a life expectancy of two years.
- 7. In the late 1960s, Hawking's physical abilities declined: he began to use crutches and ceased lecturing regularly. As he slowly lost the ability to write, he developed compensatory visual methods, including seeing equations in terms of geometry.The physicistWerner Israel later compared the achievements to Mozart composing an entire symphony in his head. Hawking was, however, fiercely independent and unwilling to accept help or make concessions for his disabilities. He preferred to be regarded as "a scientist first, popular science writer second, and, in all the ways that matter, a normal human being with the same desires, drives, dreams, and ambitions as the next person." His wife Jane Hawking later noted that "Some people would call it determination, some obstinacy. I've called it both at one time or another.“
- 8. Hawking's speech deteriorated, and by the late 1970s he could only be understood by his family and closest friends.To communicate with others, someone who knew him well would translate his speech into intelligible speech For his communication, Hawking initially raised his eyebrows to choose letters on a spelling card. But in 1986 he received a computer program called the "Equalizer" fromWalter Woltosz, CEO of Words Plus. He required much persuasion to accept the use of a wheelchair at the end of the 1960s, but ultimately became notorious for the wildness of his wheelchair driving. Hawking was a popular and witty colleague, but his illness, as well as his reputation for brashness, distanced him from some
- 9. Hawking gradually lost the use of his hand, and in 2005 he began to control his communication device with movements of his cheek muscles, with a rate of about one word per minute. With this decline there is a risk of him developing locked-in syndrome, so Hawking is collaborating with researchers on systems that could translate his brain patterns or facial expressions into switch activations. Hawking could now simply press a switch to select phrases, words or letters from a bank of about 2,500–3,000 that are scanned. The program was originally run on a desktop computer. However, Elaine Mason's husband, David, a computer engineer, adapted a small computer and attached it to his wheelchair.
- 10. By 2009 he could no longer drive his wheelchair independently. He has increased breathing difficulties, requiring a ventilator at times and has been hospitalised several times Stephen Hawking has become one of the most famous scientists of his generation. He makes frequent public engagements and his portrayed himself in popular media culture from programmes such as the Simpsons to StarTrek. “One, remember to look up at the stars and not down at your feet.Two, never give up work.Work gives you meaning and purpose and life is empty without it.Three, if you are lucky enough to find love, remember it is there and don’t throw it away.” – Stephen Hawking
- 11. “It is a waste of time to be angry about my disability. One has to get on with life and I haven’t done badly. People won’t have time for you if you are always angry or complaining. ”