Write few sentences on this famous scientists.
1)C.V Raman
2) Vikram Sarabhai
3)Homi Jahangir Bhabha
4)S.Chandra sekhar
5)JC Bose
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Answers
1) Chandrasekhara Venkata Raman was an Indian physicist known mainly for his work in the field of light scattering. With his student K. S. Krishnan, he discovered that when light traverses a transparent material, some of the deflected light changes wavelength and amplitude.
2) Vikram Ambalal Sarabhai was an Indian physicist and astronomer who initiated space research and helped develop nuclear power in India. He was honoured with Padma Bhushan in 1966 and the Padma Vibhushan in 1972. He is internationally regarded as the Father of the Indian Space Program.
3) Homi Jehangir Bhabha was an Indian nuclear physicist, founding director, and professor of physics at the Tata Institute of Fundamental Research.
4) Subrahmanyan Chandrasekhar FRS was an Indian-American astrophysicist who spent his professional life in the United States. He was awarded the 1983 Nobel Prize for Physics with William A. Fowler for "...theoretical studies of the physical processes of importance to the structure and evolution of the stars"
5) Sir Jagadish Chandra Bose CSI CIE FRS was a biologist, physicist, botanist and an early writer of science fiction. He pioneered the investigation of radio and microwave optics, made significant contributions to plant science, and laid the foundations of experimental science in the Indian subcontinent
Explanation:
1. CV Raman was not only a great scientist but also believed in social development. In 1930, he won the Nobel Prize for Physics becoming the first Asian to do so. He is associated with the concept of Raman's Effect, which says that when a light passes through a transparent substance, it scatters.
Raman studied the concept of broken light and observed that "there were two spectral lines of very low strength (strength) parallel to the incident monochromatic light." This proved that any broken light was not monochromatic in nature even though the incident light was monochromatic. When scientists were confused whether the form of light was like waves or like particles, the Raman Effect proved that light is made up of particles known 55 as photons.
2.Dr Vikram Ambalal Sarabhai was the key person behind the launch of India's first satellite 'Aryabhatta'. His studies of cosmic rays have made it evident that cosmic rays are a flow of energy particles with its source in outer space. On their way to earth, they are influenced by solar energy, and the earth's atmosphere and magnetism.
Dr Sarabhai established many institutes, which are of international standing. The most notable among them are the Indian Institutes of Management (IIMs), which are considered outstanding for their management study programmes. Under his supervision, the Thumba Equatorial Rocket Launching Station (TERLS) was set up. He wanted to take education to villages through satellite communication.
3.Dr Homi Jehangir Bhabha joined the Indian Institute of Sciences at Bangalore as a Reader at the request of Dr C V Raman. Soon, he became a Professor of Physics. It was here that he got the idea of building a research institute for some of the new areas of Physics. India's first atomic research centre, now known as the Bhabha Atomic Research Centre (BARC) was established at Trombay, where Bhabha became the first chairman in 1948. India's first atomic reactor, 'Apsara' was also established under his authority.
4.Subrahmanyan Chandrasekhar FRS (About this soundpronunciation) (19 October 1910 – 21 August 1995)[3] was an Indian-American astrophysicist who spent his professional life in the United States.[4] He was awarded the 1983 Nobel Prize for Physics with William A. Fowler for "...theoretical studies of the physical processes of importance to the structure and evolution of the stars". His mathematical treatment of stellar evolution yielded many of the current theoretical models of the later evolutionary stages of massive stars and black holes.[5][6] The Chandrasekhar limit is named after him.
5.Sir Jagadish Chandra Bose CSI CIE FRS was a biologist, physicist, botanist and an early writer of science fiction. He pioneered the investigation of radio and microwave optics, made significant contributions to plant science, and laid the foundations of experimental science in the Indian subcontinent.
Born: 30 November 1858, Munshiganj District, Bangladesh
Died: 23 November 1937, Giridih
Spouse: Abala Bose (m. 1887–1937)
Education: Hare School, St. Xavier's Collegiate School, Presidency University, more
Parents: Bhagawan Chandra Bose, Bama Sundari Bose