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Dr.C.V.RAMAN

Dr.C.V.RAMAN
469609

Dr.C.V.RAMAN

Early years

Venkata Raman was born at Thiruvanaikaval, near Tiruchirappalli, Madras Presidency to R. Chandrasekhara Iyer (b. 1866) and Parvati Ammal (Saptarshi Parvati).[1] He was the second of their eight children. At an early age, Raman moved to the city of Vizag, Andhra Pradesh. Studied in St.Aloysius Anglo-Indian High School. His father was a lecturer in Mathematics and physics.

Raman entered Presidency College, Chennai in 1902. In 1904, he gained his B.Sc., winning the first place and the gold medal in physics. In 1907, he gained his M.Sc., obtaining the highest distinctions. He joined the Indian Finance Department as an Assistant Accountant General.

Raman Effect

Sometimes a rainbow appears and delights our eyes. We see in it shades of red, orange, yellow, green, blue, indigo and violet. The white ray of the sun includes all these colors. When a beam of sunlight is passed through a glass prism a patch of these *color- bands are seen. This is called the spectrum. The Spectro- meter is an apparatus used to study
the spectrum. Spectral lines in it are characteristic of the light passing through the prism. A beam of light that causes a single spectral line is said to be monochromatic.

When a beam of monochromatic light passes through a transparent substance (a
substance which allows light to pass through it), the beam is scattered. Raman spent a long time in the study of the scattered light.. On February 28, 1928, he observed two low intensity spectral line corresponding to the incident mono- chromatic light. Years of his labor had borne fruit. It was clear that though the incident light was monochromatic, the
scattered light due to it, was not monochromatic.Thus Raman's experiments discovered a phenomenon which was lying hidden in nature.

The 16th of March 1928 is a memorable day in the history )f science. On that day a
meeting was held under the joint auspices of the South Indian Science Association and the Science Club of Central College, Bangalore; Raman was the Chief Guest. He announced the new phenomenon discovered by him to the world. He also acknowledged wit h affection the assistance given by K.S. Krishnan and Venkateshwaran, who were his students.

The phenomenon attracted the attention of research workers all over the world. It
became famous as the 'Raman Effect'. The spectral lines in the scattered light were known as 'Raman Lines'.

Is light wave-like or particle-like? This question has been discussed from time to time by scientists. The Raman Effect confirmed that light was made up of particles known as 'photons'. It helped in the study of the molecular and crystal structures of different substances.

World-Wide Interest in Raman Effect

Investigations making use of the Raman Effect began in many countries. During the first twelve years after its discovery, about 1800 research papers were published on various aspects of it and about 2500 chemical compounds were studied.Raman Effect was highly praised as one of the greatest discoveries of the third decade of this century.

After the 'lasers' (devices that produce intense beams of light, their name coming from the initial letters of 'Light Amplification by Stimulated Emission of Radiation) came into use in the 1960's, it became easier to get monochromatic light of very high intensity for experiments. This brought back scientific interest in Raman Effect, and the interest remains alive to this day.

The World Honors Raman

Raman received many honors from all over the world for his achievement. In 1928 the Science Society of Rome awarded the Matteucci Medal. In 1929 the British Government knighted him; thereafter Professor Raman came to be known as Professor Sir C..V. Raman. The Royal Society of London awarded the Hughes Medal in 1930.Honorary doctorate degrees were awarded by the Universities of Freiburg (Germany), Glasgow(England), Paris (France), Bombay, Benaras, Dacca, Patna, Mysore and several others.

Early years

Venkata Raman was born at Thiruvanaikaval, near Tiruchirappalli, Madras Presidency to R. Chandrasekhara Iyer (b. 1866) and Parvati Ammal (Saptarshi Parvati).[1] He was the second of their eight children. At an early age, Raman moved to the city of Vizag, Andhra Pradesh. Studied in St.Aloysius Anglo-Indian High School. His father was a lecturer in Mathematics and physics.

Raman entered Presidency College, Chennai in 1902. In 1904, he gained his B.Sc., winning the first place and the gold medal in physics. In 1907, he gained his M.Sc., obtaining the highest distinctions. He joined the Indian Finance Department as an Assistant Accountant General.

Raman Effect

Sometimes a rainbow appears and delights our eyes. We see in it shades of red, orange, yellow, green, blue, indigo and violet. The white ray of the sun includes all these colors. When a beam of sunlight is passed through a glass prism a patch of these *color- bands are seen. This is called the spectrum. The Spectro- meter is an apparatus used to study
the spectrum. Spectral lines in it are characteristic of the light passing through the prism. A beam of light that causes a single spectral line is said to be monochromatic.

When a beam of monochromatic light passes through a transparent substance (a
substance which allows light to pass through it), the beam is scattered. Raman spent a long time in the study of the scattered light.. On February 28, 1928, he observed two low intensity spectral line corresponding to the incident mono- chromatic light. Years of his labor had borne fruit. It was clear that though the incident light was monochromatic, the
scattered light due to it, was not monochromatic.Thus Raman's experiments discovered a phenomenon which was lying hidden in nature.

The 16th of March 1928 is a memorable day in the history )f science. On that day a
meeting was held under the joint auspices of the South Indian Science Association and the Science Club of Central College, Bangalore; Raman was the Chief Guest. He announced the new phenomenon discovered by him to the world. He also acknowledged wit h affection the assistance given by K.S. Krishnan and Venkateshwaran, who were his students.

The phenomenon attracted the attention of research workers all over the world. It
became famous as the 'Raman Effect'. The spectral lines in the scattered light were known as 'Raman Lines'.

Is light wave-like or particle-like? This question has been discussed from time to time by scientists. The Raman Effect confirmed that light was made up of particles known as 'photons'. It helped in the study of the molecular and crystal structures of different substances.

World-Wide Interest in Raman Effect

Investigations making use of the Raman Effect began in many countries. During the first twelve years after its discovery, about 1800 research papers were published on various aspects of it and about 2500 chemical compounds were studied.Raman Effect was highly praised as one of the greatest discoveries of the third decade of this century.

After the 'lasers' (devices that produce intense beams of light, their name coming from the initial letters of 'Light Amplification by Stimulated Emission of Radiation) came into use in the 1960's, it became easier to get monochromatic light of very high intensity for experiments. This brought back scientific interest in Raman Effect, and the interest remains alive to this day.

The World Honors Raman

Raman received many honors from all over the world for his achievement. In 1928 the Science Society of Rome awarded the Matteucci Medal. In 1929 the British Government knighted him; thereafter Professor Raman came to be known as Professor Sir C..V. Raman. The Royal Society of London awarded the Hughes Medal in 1930.Honorary doctorate degrees were awarded by the Universities of Freiburg (Germany), Glasgow(England), Paris (France), Bombay, Benaras, Dacca, Patna, Mysore and several others.

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