C.V.Raman - The Knight Bachelor

One of the most prominent Indian scientists in history, C.V. Raman was the first Indian person to win the Nobel Prize in science for his illustrious 1930 discovery, now commonly known as the “Raman Effect”. It is immensely surprising that Raman used an equipment worth merely Rs.200 to make this discovery. The Raman Effect is now examined with the help of equipment worth almost millions of rupees.

Early Life

Chandrasekhara Venkata Raman was born at Tiruchirapalli in Tamil Nadu on 7th November 1888 to a physics teacher. Raman was a very sharp student. After doing his matriculation at 12, he was supposed to go abroad for higher studies, but after medical examination, a British surgeon suggested against it. Raman instead attended Presidency College, Madras. After completing his graduation in 1904, and M.Sc. in Physics in 1907, Raman put through various significant researches in the field of physics. He studied the diffraction of light and his thesis on the subject was published in 1906.

Raman was made the Deputy Accountant General in Calcutta in 1907, after a successful Civil Service competitive examination. Very much occupied due to the job, he still managed to spare his evenings for scientific research at the laboratory of the Indian Association for Cultivation of Sciences. On certain occasions, he even spent the entire nights. Such was his passion that in 1917, he resigned from the position to become the Professor of Physics at Calcutta University.

Personal life

He was married on 6 May 1907 to Lokasundari Ammal (1892–1970) with whom he had two sons, Chandrasekhar and Radhakrishnan. On his religious views, he was said to be an agnostic. Raman retired from the Indian Institute of Science in 1944 and established the Raman Research Institute in Bangalore, Karnataka a year later. He served as its director and remained active there until his death in 1970, in Bangalore, at the age of 82
C.V. Raman was the paternal uncle of Subrahmanyan Chandrasekhar, who later won the Nobel Prize in Physics (1983) for his discovery of the Chandrasekhar limit in 1931 and for his subsequent work on the nuclear reactions necessary for stellar evolution.   

Contributions and Achievements

On a sea voyage to Europe in 1921, Raman curiously noticed the blue color of the glaciers and the Mediterranean. He was passionate to discover the reason of the blue color. Once Raman returned to India, he performed many experiments regarding the scattering of light from water and transparent blocks of ice. According to the results, he established the scientific explanation for the blue color of sea-water and sky.

There is a captivating event that served as the inspiration for the discovery of the Raman Effect. Raman was busy doing some work on a December evening in 1927, when his student, K.S. Krishnan (who later became the Director of the National Physical Laboratory, New Delhi), gave him the news that Professor Compton has won the Nobel Prize on scattering of X-rays. This led Raman to have some thoughts. He commented that if the Compton Effect is applicable for X-rays, it must also be true for light. He carried out some experiments to establish his opinion.

Raman employed monochromatic light from a mercury arc which penetrated transparent materials and was allowed to fall on a spectrograph to record its spectrum. During this, Raman detected some new lines in the spectrum which were later called ‘Raman Lines’. After a few months, Raman put forward his discovery of ‘Raman Effect’ in a meeting of scientists at Bangalore on March 16, 1928, for which he won the Nobel Prize in Physics in 1930.

The ‘Raman Effect’ is considered very significant in analyzing the molecular structure of chemical compounds. After a decade of its discovery, the structure of about 2000 compounds was studied. Thanks to the invention of the laser, the ‘Raman Effect’ has proved to be a very useful tool for scientists.

Some of Raman’s other interests were the physiology of human vision, the optics of colloids and the electrical and magnetic anisotropy.

Honours and awards

Raman was honoured with a large number of honorary doctorates and memberships of scientific societies.

He was elected a Fellow of the Royal Society early in his career (1924) and knighted in 1929.

In 1930 he won the Nobel Prize in Physics. In 1941 he was awarded the Franklin Medal.
In 1954 he was awarded the Bharat Ratna.

He was awarded the Lenin Peace Prize in 1957. In 1998, the American Chemical Society and Indian Association for the Cultivation of Science recognised Raman's discovery as an International Historic Chemical Landmark.

India celebrates National Science Day on 28 February of every year to commemorate the discovery of the Raman effect in 1928.

Later Life and Death

Sir C.V. Raman became the Fellow of the Royal Society of London in 1924.At the end of October he collapsed in his laboratory, the valves of his heart having given way. He was moved to hospital and the doctors gave him four hours to live. He survived and after a few days refused to stay in the hospital as he preferred to die in the gardens of his Institute surrounded by his flowers.

Two days before Raman died, he told one of his former students, “Do not allow the journals of the Academy to die, for they are the sensitive indicators of the quality of science being done in the country and whether science is taking root in it or not.”
That same evening, Raman met with the Board of Management of his Institute and discussed (from his bed) with them any proceedings with regards to the Institute’s management. Raman passed away from natural causes early next morning, 21 November 1970.

Life Story Of Sir William Ramsay

Sir William Ramsay was an eminent British physical chemist who is credited with the discovery of argon, krypton, neon and xenon. He also demonstrated that these gases, along with helium and radon, makes the noble gases; a family of new elements. Ramsay won the 1904 Nobel Prize in Chemistry for his extraordinary efforts.

Early Life and Education

Ramsay was born in Glasgow on 2 October 1852, the son of civil engineer William Ramsay and Catherine, née Robertson.He was a nephew of the geologist Sir Andrew Ramsay.
He attended the Glasgow Academy and then continued his education at the University of Glasgow under Thomas Anderson and then went to study in Germany at the University of Tübingen with Wilhelm Rudolph Fittig where his doctoral thesis was entitled Investigations in the Toluic and Nitrotoluic Acids.



Ramsay returned to Glasgow as Anderson's assistant at the Anderson College. He was appointed Professor of Chemistry at the University College of Bristol in 1879 and married Margaret Buchanan in 1881. In the same year he became the Principal of University College, Bristol, and somehow managed to combine that with active research both in organic chemistry and on gases.

Career

Blue Plaque at 12 Arundel Gardens commemorating the work of William Ramsay.
In 1887 he succeeded Alexander Williamson to the chair of Chemistry at University College London (UCL). It was here at UCL that his most celebrated discoveries were made. As early as 1885–1890 he published several notable papers on the oxides of nitrogen, developing the skills that he would need for his subsequent work.

On the evening of 19 April 1894 Ramsay attended a lecture given by Lord Rayleigh. Rayleigh had noticed a discrepancy between the density of nitrogen made by chemical synthesis and nitrogen isolated from the air by removal of the other known components.

 After a short discussion he and Ramsay decided to follow this up. By August, Ramsay could write to Rayleigh to announce that he had isolated a heavy component of air, previously unknown, which did not appear to have any obvious chemical reactivity. He named the gas "argon". In the years that followed, working with Morris Travers, he discovered neon, krypton, and xenon. He also isolated helium which had been observed in the spectrum of the sun but had not been found on earth. In 1910 he also made and characterized radon.

In 1904 Ramsay received the Nobel Prize in Chemistry. Ramsay's high standing in scientific circles led to him being an adviser in the setting up of the Indian Institute of Science. He suggested Bangalore as the most appropriate location for the institute.

Ramsay’s high standing in scientific circles led to his unfortunate endorsement in 1905 of the Industrial and Engineering Trust Ltd., a corporation with a supposed secret process to extract gold from seawater. The corporation bought property along the English coast to implement the gold-from-seawater process, but the company quickly faded from public view, and never produced any gold.

Contributions and Achievements

After taking over the chair of Chemistry at University College London, William Ramsay made several important discoveries and wrote many scientific papers regarding the oxides of nitrogen. Drawing inspiration from Lord Rayleigh’s 1892 discovery that the atomic weight of nitrogen found in the atmosphere was higher than that of nitrogen found in the atmosphere, Ramsay discovered a heavy gas in atmospheric nitrogen, and named it argon. One year later, he liberated helium from a mineral called cleveite.

While working with chemist Morris W. Travers in 1898, Ramsay isolated three more elements from liquid air at low temperature and high pressure, and termed them as neon, krypton, and xenon. In collaboration with another chemist, Frederick Soddy, in 1903, Ramsay showed that helium, together with a gaseous emanation called radon, is consistenly generated during the radioactive decay of radium. This discovery had a profound influence on the field of radiochemistry.

Later Life and Death

William Ramsay was made a fellow of the Royal Society in 1888, and was knighted three years later, in 1902. He also worked as a president of the Chemical Society, and the British Association for the Advancement of Science.

Ramsay died of nasal cancer on July 23, 1916 in Buckinghamshire, England. He was 63 years old.

Biography Of Alexander Fleming

Scottish biologist and inventor Alexander Firming is widely regarded for his 1928 discovery of penicillin, a drug that is used to kill harmful bacteria. His work on immunology, bacteriology, and chemotherapy is considered groundbreaking and highly influential.

Early Life and Education

Fleming was born on 6 August 1881 at Lochfield, a farm near Darvel, in Ayrshire, Scotland. He was the third of the four children of farmer Hugh Fleming (1816–1888) from his second marriage to Grace Stirling Morton (1848–1928), the daughter of a neighbouring farmer. Hugh Fleming had four surviving children from his first marriage. He was 59 at the time of his second marriage, and died when Alexander (known as Alec) was seven.

Fleming went to Loudoun Moor School and Darvel School, and earned a two-year scholarship to Kilmarnock Academy before moving to London, where he attended the Royal Polytechnic Institution.After working in a shipping office for four years, the twenty-year-old Fleming inherited some money from an uncle, John Fleming. His elder brother, Tom, was already a physician and suggested to his younger sibling that he follow the same career, and so in 1903, the younger Alexander enrolled at St Mary's Hospital Medical School in Paddington. He qualified MBBS from the school with distinction in 1906.

Fleming had been a private in the London Scottish Regiment of the Volunteer Force since 1900, and had been a member of the rifle club at the medical school. The captain of the club, wishing to retain Fleming in the team suggested that he join the research department at St Mary's, where he became assistant bacteriologist to Sir Almroth Wright, a pioneer in vaccine therapy and immunology. He gained a BSc with Gold Medal in 1908, and became a lecturer at St Mary's until 1914.

On 23 December 1915, Fleming married a trained nurse, Sarah Marion McElroy of Killala, County Mayo, Ireland.

Fleming assisted in battlefield hospitals in France during World War I (1911-1918), where he observed that some soldiers, despite surviving their initial battlefield wounds, were dying of septicemia or some another infection only after a few years.


Fleming served throughout World War I as a captain in the Royal Army Medical Corps, and was Mentioned in Dispatches. He and many of his colleagues worked in battlefield hospitals at the Western Front in France. In 1918 he returned to St Mary's Hospital, where he was elected Professor of Bacteriology of the University of London in 1928.

Contributions and Achievements

Once the war was over, Fleming looked for medicines that would heal infections. The antiseptics of World War I were not totally efficient, and they primarily worked on a wound’s surface. Spraying an antiseptic made things even worse if the wound was deep.

Fleming came back to his laboratory in 1928 after a long vacation. He carried out an experiment and left several dishes with several bacteria cultures growing in them. After some time, he observed that some of the dishes were contaminated with a fungus, which ruined his experiment. He was about to discard the dishes, but he noticed that in one dish, the bacteria failed to grow in an area around the fungus.

He successfully isolated the fungus and established it was from the Penicillium group or genus. Fleming made his discovery public in 1929, however to a mixed reaction. While a few doctors thought penicillin, the antibiotic obtained from the Penicillium fungus, might have some importance as a topical antiseptic, the others were skeptical. Fleming was sure that the penicillin could also function inside the body. He performed some experiments to demonstrate that the genus of fungus had germ-killing power, even when it was diluted 800 times. Fleming tried to cultivate penicillin until 1940, but it was hard to grow, and isolating the germ-killing agent was even harder. He was unsure if it would ever work in a proper manner.

Luckily, a German Chemist, Ernst Chain, discovered the process to isolate and concentrate the germ-killing agent in penicillin some time later. Another Australian pharmacologist Howard Florey found out the ways of its mass production. During World War I, the goverments of U.S. and Great Britain funded Florey and Chain, therefore the penicillin almost became the magic spell that cured many diseases. Florey and Chain were awarded the Nobel Prize in 1945.

Personal Life and Death

Fleming married his first wife, Sarah, who died in 1949. Their only child, Robert Fleming, went on to become a general medical practitioner. Fleming married for the second time to Dr. Amalia Koutsouri-Vourekas, with whom he worked at St. Mary’s, on 9 April 1953. She also died in 1986.

Fleming died of a heart failure in London in 1955

Nephew Of Current - Alessandro Volta

Alessandro Volta is one of the most famous Italian physicists who is highly regarded for his invention of the electric cell as well as the 1777 discovery of methane.

Early life and works

Volta was born in Como, a town in present-day northern Italy (near the Swiss border) on February 18, 1745. In 1774, he became a professor of physics at the Royal School in Como. 

A year later, he improved and popularized the electrophorus, a device that produced static electricity. His promotion of it was so extensive that he is often credited with its invention, even though a machine operating on the same principle was described in 1762 by the Swedish experimenter Johan Wilcke.

Volta was raised in a strict Catholic family. He got his early education from a Jesuit school. He was adored by his teachers who thought Volta had all the abilities to become a good Jesuit priest.

In the years between 1776–78, Volta studied the chemistry of gases. He discovered methane after reading a paper by Benjamin Franklin of America on "flammable air", and Volta searched for it carefully in Italy. In November, 1776, he found methane at Lake Maggiore, and by 1778 he managed to isolate methane. He devised experiments such as the ignition of methane by an electric spark in a closed vessel. Volta also studied what we now call electrical capacitance, developing separate means to study both electrical potential (V ) and charge (Q ), and discovering that for a given object, they are proportional. This may be called Volta's Law of capacitance, and it is likely that for this work the unit of electrical potential has been named the volt.

Volta was very keen about studying electricity which was in its earliest stages at the time. He envisioned that there is a net neutral condition in a body in which all electrical attractions are neutralized. This effect could be transformed by some external source which later changes the relative configuration of the particles. Volta believed that in such an electrically unstable state, the body gets electrically charged.

In 1779 he became a professor of experimental physics at the University of Pavia, a chair that he occupied for almost 25 years. In 1794, Volta married an aristocratic lady also from Como, Teresa Peregrini, with whom he raised three sons: Giovanni, Flaminio and Zanino.

Contributions and Achievements

With this rather weak concept of an electrically charged body, Volta experimented extensively to study electrical induction. He was successful in creating some devices that were able to store electric charge. Subsequently, he gained fame and received grants to visit other countries. He also saw other famous scientists around this time. Volta accepted a teaching job at the University of Pavia where he stayed for about forty years.

Influenced by the efforts of Dc Saussure, Volta developed an interest in atmospheric electricity. He made certain modifications to the electrical instruments made by the Swiss geologist, making them more refined and precise. He came up with methods to measure the so-called “electrical tension”, later named as the volt.

Volta modified another instrument called the eudiometer, which measured the volume and composition of gases. He was successful in finding out that ordinary air contains about 21% of oxygen. The modified version of the instrument also helped Lavoisier on his legendary work regarding the composition of water. Volta found out that the inflammable gas which creates bubbles in marshes was methane, which is now used as a fuel.

Volta initially rejected the Galvani’s idea of animal electricity. When he carried out the experiment himself, he was amazed that the same effect, momentary electric current, which was discovered by Galvani, can be achieved using metals and not dead frogs. Volta made it clear that electric currents could be generated by appropriately connecting metals or wires. Using zinc and copper wires and saline solutions, Volta successfully construced the first electric battery, widely considered to be one of the greatest and most important breakthroughs in the history of science and mankind.

Later Life and Death

In honor of his work, Volta was made a count by Napoleon Bonaparte in 1801. Furthermore, his image was depicted upon the Italian 10,000 lira note (no longer in circulation, since the lira has been replaced by the euro) along with a sketch of his well-known voltaic pile.

Volta retired in 1819 to his estate in Camnago,a frazione of Como, Italy, now named "Camnago Volta" in his honor. He died there on March 5, 1827.Volta's remains were also buried in Camnago Volta.

Volta's legacy is celebrated by the Tempio Voltiano memorial located in the public gardens by the lake. There is also a museum which has been built in his honor, and it exhibits some of the original equipment that Volta used to conduct experiments. Not far away stands the Villa Olmo, which houses the Voltian Foundation, an organization promoting scientific activities. Volta carried out his experimental studies and produced his first inventions near Como. Modern day honors go to him for being the father of the electric automobile. Toyota furnished the electric hybrid engine to Italian design house Giugiaro to build the Toyota Volta in 2003. Later on Chevrolet, in 2011, was only able to use the name.