Jagadish Chandra Bump - SpeedyLook encyclopedia

Biography

Bump passes its childhood to Faridpur where his/her father is magistrate. To nine years, it is sent to the school with Calcutta. In 1875, it is with faculties Saint Xavier where it has as professor the Jésuite Eugene Lafont which will play a big role in its interest for the natural science. After a license obtained in 1879 at the university of Calcutta, Bose goes to England in 1880 and begins studies of medicine at the university of London which it must stop at the end of one year for health reason, its crises of Malaria returning the difficult life to him. The following year, it integrates Christ' S College of Cambridge where it makes studies of Physique having professors as prestigious as Lord Rayleigh, Sir James Dewar, Sir Michael Foster and Francis Darwin. Its diploma out of pocket, it turns over to Calcutta and obtains a post of professor of physique in Presidency College of the city where it will teach and undertake research during the thirty years which will follow. However, during its recruitment, the administration proposes to him only half of the wages paid with the British teachers. Bump refuses and comes to work three years, without missing only one day and being paid. At the conclusion of this period, the Twany main thing and the Croft director recommend that it is paid with the full wages and this since its integration in the establishment. According to the example of Rayleigh, it makes an important use of the experimentation during these courses and leaves the memory of an enthralling professor. It will have in particular as raises known Satyendranath Bose for the Statistique of Bump-Einstein.

Of 1894 with 1900, Bose makes a series of work pioneers on the electromagnetic waves, before Marconi which is credited however for this invention. Indeed, in November 1894, Bose its first public demonstration of the waves carries out, using them to make sound a remote bell and to explode a powder load. In 1896, the Daily Chronicle off England informs its readers that: “inventor (J.C. Bump) transmitted signals to a distance of approximately a mile and thus consequently provided the first and obvious and excessively valid application of this new theoretical wonder. ” Popov in Russia makes similar experiments then, but written in December 1895 that it always maintains the hope to transmit a remote signal by radio waves. Marconi, as for him, will make its first public demonstration only in May 1897 in the plain of Salisbury in England where he had emigrated following the lack of interest for his work in his native land.

With the difference of the Italian scientist, Bose does not have any interest for the marketing of its discovery and affirms to work only with the development of the scientific knowledge. He writes besides with Tagore in 1901, after the stop of his work on the waves: I will like that you can see the terrible attachment which one has in this country for the profit… this covetousness for the money… If I put the finger in this gears, there will be no more loophole for me ( I wish you could see that terrible attachment for profit in this country… that lust for money… Once caught in that trap there would cuts been No way out for me ).

During its work, it produces short waves of 5 mm, studies refraction, diffraction and polarization. It uses also the Galène to build the primitive shape of diode semiconductrice which it uses as wave detector. In 1954, Gerald Pearson and Walter Houser Brattain in their “History off Semiconductor Research” will recognize the anteriority of work of Bump in the use of the semiconductor crystals like detector of the radio waves. Sir Neville Mott, the prize winner of the Nobel Prize of physics of 1977 will affirm “J.C. Bump was 60 years old in advance over its time” and “In fact, it anticipated, the Semi-conducteur S of typify and type-NR. ”

After 1900, Bose changes field of research and turns to another of its centers of interest of long time, the vegetable Physiologie. There, also, it will produce work pioneers on the growth of the plants and their reaction to the electromagnetic waves. It designs very fine instruments of observation of these effects, in particular a device called crescographe which it uses to evaluate the growth and the reaction of the plants and which is able to initially amplify them up to 10.000 times then 10 million times then.

Jagadish Chandra Bose is several times honoured for its work, the British government decrees to him off in 1903 the Companionship the British Empire (C.B.E.), it receives the Companionship off the Star off India (C.S.I.) in 1912. Moreover he sees himself decreed doctorates honoris causa by the universities of Calcutta, Vârânasî and Dhâkâ. The Royal Society gives him the title of Fellow .

There takes its retirement in 1915, but remains salaried additional Professor emeritus during five years. The following year, it is made Chevalier and carries the title of Sir .

It founds in Calcutta the Institute Bump, the first research institute scientific of India, which is inaugurated on November 30th 1917.

The review Nature published 27 of its papers, a big number compared with that of the publications of the largest researchers.

See too

External bonds

Short biography
The Work off Jagadis Chandra Bump. 100 Years off mm-Wave Research
The Torch Bearers off Indian Rebirth

Sources

See external Bonds

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