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জগদীশ চন্দ্র বসু Jagadish Chandra Bose
Jagadish Chandra Bose in his lab
Born	30 November 1858(1858-11-30) Mymensingh, East Bengal (now Bangladesh), British India
Died	23 November 1937 (aged 78) Giridih, Bengal Presidency, British India
Residence	Undivided India
Nationality	British Indian
Field	Physics, Biophysics, Biology, Botany, Archaeology, Bengali Literature, Bangla Science Fiction
Institutions	Presidency College
Alma mater	Calcutta University Christ's College, Cambridge University of London
Academic advisor	John Strutt (Lord Rayleigh)
Known for	Millimetre waves Radio Crescograph

Sir Jagadish Chandra Bose (Bengali: জগদীশ চন্দ্র বসু Jôgodish Chôndro Boshu) (November 30, 1858 – November 23, 1937) was a Bengali polymath: a physicist, biologist, botanist, archaeologist, and science fiction writer.^[1] He pioneered the investigation of radio and microwave optics, made extremely significant contributions to plant science, and laid the foundations of experimental science in the Indian subcontinent.^[2] He is considered the father of radio science,^[3] and is also considered the father of Bengali science fiction. He was the first from the Indian subcontinent to get a US patent, in 1904.

Born in Bengal province of British India, Bose completed graduation from St. Xavier's College, Calcutta. Then he went to the University of London to study medicine, but couldn't complete his study due to health problems. He returned to India and joined the Presidency College as a Professor of Physics. There, in spite of racial discrimination, and lack of funding and equipment, Bose carried on his scientific research. He made remarkable progress in his research of remote wireless signaling and was the first to use semiconductor junction to detect radio signals. However, instead of trying to gain commercial benefit from this invention Bose made his inventions public in order to allow others to develop on his research. Subsequently he made some pioneering discoveries in plant physiology. He used his own invention crescograph to measure plant response to various stimuli, and thereby scientifically proved parallelism between animal and plant tissues. Although Bose filed for patent for one of his inventions due to peer pressure his reluctance to any form of patenting was well known. Now about 70 years of after his death he is being credited for many of his contributions to modern science.

Contents 1 Early life and education 2 Joining Presidency College 3 Marriage 4 Radio research 5 Plant research 6 Science fiction 7 Bose and patents 8 Legacy 9 Publications 10 Honors 11 Notes 12 References 13 External links

Bose was born in Mymensingh in Bengal (now in Bangladesh) on November 30, 1858. His father, Bhagawan Chandra Bose was a leader of the Brahmo Samaj and worked as a deputy magistrate/ assistant commissioner in Faridpur,^[4] Bardhaman and other places.^[5] His family hailed from the village Rarikhal, Bikrampur, in the current day Munshiganj District of Bangladesh.^[6]

Bose’s education started in a vernacular school, because his father believed that one must know his own mother tongue before beginning English, and that he should know his own people.^{[citation needed]} Speaking at the Bikrampur Conference in 1915, Bose said:

“At that time, sending children to English schools was an aristocratic status symbol. In the vernacular school, to which I was sent, the son of the Muslim attendant of my father sat on my right side, and the son of a fisherman sat on my left. They were my playmates. I listened spellbound to their stories of birds, animals and aquatic creatures. Perhaps these stories created in my mind a keen interest in investigating the workings of Nature. When I returned home from school accompanied by my school fellows, my mother welcomed and fed all of us without discrimination. Although she was an orthodox old fashioned lady, she never considered herself guilty of impiety by treating these ‘untouchables’ as her own children. It was because of my childhood friendship with them that I could never feel that there were ‘creatures’ who might be labelled ‘low-caste’, I never realised that there existed a ‘problem’ common to the two communities, Hindus and Muslims.”^[5]

Bose joined the Hare School in 1869 and then St. Xavier’s School at Kolkata. In 1875, Bose passed the Entrance Examination (equivalent to school graduation) of Calcutta University and was admitted to St. Xavier's College, Calcutta. At St. Xavier's, Bose came in contact with Jesuit Father Eugene Lafont who played a significant role in developing his interest to natural science.^[6][5] He received a B.A. in Science from Calcutta University in 1879.^[4]

Bose wanted to go to England to compete for the Indian Civil Service. However, his father, a civil servant himself, canceled the plan; he wished his son to be a scholar, who would “rule nobody but himself.”^{[citation needed]} Bose went to England to study Medicine at the University of London. However he had to quit study of medicine because of ill health.^[7] The odour in the dissection rooms is also said to have exacerbated his illness.^[4]

Through the recommendation of Ananda Mohan Bose, his brother-in-law (sister's husband) and the first Indian wrangler, he secured admission in Christ's College, Cambridge to study Natural Science. He received the Natural Science Tripos from the University of Cambridge and a BSc from the University of London in 1884. Among Bose’s teachers at Cambridge were Lord Rayleigh, Michael Foster, James Dewar, Francis Darwin, Francis Balfour, and Sidney Vines. At the time when Bose was a student at Cambridge, Prafulla Chandra Roy was a student at Edinburgh. They met in London and became intimate friends.^[4][5]

Bose returned to India in 1885, carrying a letter from Fawcett, the economist to Lord Ripon, Viceroy of India. On Lord Ripon’s request Sir Alfred Croft, the Director of Public Instruction, appointed Bose officiating professor of physics in Presidency College. The principal C.H.Tawney protested against the appointment but had to accept it.^[8]

Bose was not provided with facilities for research. On the other hand, he was ‘victim of racialism’ with regard to his salary.^[8] In those days, an Indian professor was paid Rs. 200 per month, while an European drew Rs. 300 per month. Since Bose was officiating, he was offered a salary of only Rs. 100 per month.^[9] With remarkable sense of self respect and national pride he decided on a new form of protest.^[8] Bose refused to accept the salary cheque. In fact, he continued his teaching assignment for three years without salary.^[10] Finally both the Director of Public Instruction and the Principal of the Presidency College fully realised the value of Bose’s skill in teaching and also his lofty character. As a result his appointment was made permanent with retrospective effect. He was given the full salary for the previous three years in lumpsum.^[4]

Presidency College lacked a proper laboratory. Bose had to conduct his researches in a small 24 square foot room.^[4] He devised equipments for the research with the help of one untrained tinsmith.^[8] Sister Nivedita writes, “I was horrified to find the way in which a great worker could be subjected to continuous annoyance and petty difficulties … The college routine was made as arduous as possible for him, so that he could not have the time he needed for investigation.” After his daily grind, which he of course performed with great conscientiousness, he carried out his research far into the night, in a small room in his college.^[8]

Moreover, the policy of the British government for its colonies was not conducive to attempts at original research. Bose spent his hard-earned money for making experimental equipment. Within a decade of his joining Presidency College, he emerged a pioneer in the incipient research field of wireless waves.^[8]

In 1887, Bose married Abala, daughter of the renowned Brahmo reformer Durga Mohan Das. Abala was awarded Bengal government scholarship in 1882 to study medicine in Madras (now Chennai), but had to give up because of ill health.^[11] At the time of their marriage Bose was facing financial crisis due to not drawing salaries and some debts of his father. The newly married couple faced privations and came out with flying colours, repaying the debts of Bose's father. Bose's parents lived for sometime after the debts were cleared.^[5]

See also: Invention of radio

The British theoretical physicist James Clerk Maxwell mathematically predicted the existence of electromagnetic waves of diverse wavelengths, but he died in 1879 before his prediction was experimentally verified. British physicist Oliver Lodge demonstrated the existence of Maxwell’s waves transmitted along wires in 1887-88. The German physicist Heinrich Hertz showed experimentally, in 1888, the existence of electromagnetic waves in free space. Subsequently, Lodge pursued Hertz’s work and delivered a commemorative lecture in June 1894 (after Hertz’s death) and published it in book form. Lodge’s work caught the attention of scientists in different countries including Bose in India.^[12]

The first remarkable aspect of Bose’s follow up microwave research was that he reduced the waves to the millimetre level (about 5 mm wavelength). He knew that long waves were advantageous because of their great penetrative power but realised their disadvantages for studying the light like-properties of those electric waves.^[12]

In November 1894 (or in 1895^[12]) in a public demonstration in Kolkata, Bose ignited gunpowder and rang a bell at a distance using millimetre range wavelength microwaves.^[10] The demonstration was held in the Town Hall of Calcutta, in the presence of Sir William Mackenzie, the Lieutenant Governor, and Bose wrote in a Bengali essay, Adrisya Alok {Invisible Light), “The invisible light can easily pass through brick walls, buildings etc. Therefore, messages can be transmitted by means of it without the mediation of wires.”^[12]This was one year after Nikola Tesla made the first public demonstration of radio communication in 1893. In Russia, Popov was performing similar experiments, but had recorded in December 1895 that he was hoping for distant signalling with radio waves.^[13]

Bose’s first scientific paper, “On polarisation of electric rays by double-refracting crystals” was communicated to the Asiatic Society of Bengal in May 1895, within a year of Lodge’s paper. His second paper was communicated to the Royal Society of London by Lord Rayleigh in October 1895. In December 1895, the London journal the Electrician (Vol 36) published Bose’s paper, “On a new electro-polariscope”. At that time, the word ‘coherer’, coined by Lodge, was used in the English-speaking world for Hertzian wave receivers or detectors. The Electrician readily commented on Bose’s coherer. (December 1895). The Englishman (18 January 1896) quoted from the Electrician and commented as follows:

”Should Professor Bose succeed in perfecting and patenting his ‘Coherer’, we may in time see the whole system of coast lighting throughout the navigable world revolutionised by a Bengali scientist working single handed in our Presidency College Laboratory.”

Bose planned to “perfect his coherer” but never thought of patenting it.^[12]

The 1895 public demonstration by Bose in Kolkata was before Marconi's wireless signalling experiment on Salisbury Plain in England in May 1897.^[13] Bose went to London on a lecture tour in 1896 and met Marconi, who was conducting wireless experiments for the British post office. In an interview, Bose said he was not interested in commercial telegraphy and others can use his research work. In 1899, Bose announced the development of a "iron-mercury-iron coherer with telephone detector" in a paper presented at the Royal Society, London.^[14]

It appears that Bose's demonstration of remote wireless signalling has priority over Marconi.^[15] He was the first to use a semiconductor junction to detect radio waves, and he invented various now commonplace microwave components. In 1954 Pearson and Brattain gave priority to Bose for the use of a semi-conducting crystal as a detector of radio waves. Further work at millimetre wavelengths was almost nonexistent for nearly 50 years. Just one hundred years ago, Bose described to the Royal Institution in London his research carried out in Kolkata at millimetre wavelengths. He used waveguides, horn antennas, dielectric lenses, various polarisers and even semiconductors at frequencies as high as 60 GHz; much of his original equipment is still in existence, now at the Bose Institute in Kolkata. Concepts from his original 1897 papers have been incorporated into a new 1.3 mm multi-beam receiver now in use on the NRAO 12 Metre Telescope, Arizona, U.S.A.^[13]

Neville Francis Mott, Nobel Laureate in 1977 for his own contributions to solid-state electronics, remarked that "J.C. Bose was at least 60 years ahead of his time" and "In fact, he had anticipated the existence of P-type and N-type semiconductors."

His next contribution to science was in plant physiology. He forwarded a theory for the ascent of sap in plants in 1927, his theory contributed to the vital theory of ascent of sap. According to his theory, electromechanical pulsations of living cells were responsible for the ascent of sap in plants.

He was skeptical about the then, and still now, most popular theory for the ascent of sap, the tension-cohesion theory of Dixon and Joly, first proposed in 1894. The 'CP theory', proposed by Canny in 1995 ^[16], validates this skepticism. Canny experimentally demonstrated pumping in the living cells in the junction of the endodermis.

In his research in plant stimuli, he showed with the help of his newly invented crescograph that plants responded to various stimuli as if they had nervous systems like that of animals. He therefore found a parallelism between animal and plant tissues. His experiments showed that plants grow faster in pleasant music and its growth retards in noise or harsh sound. This was experimentally verified later on [citation needed].

His major contribution in the field of biophysics was the demonstration of the electrical nature of the conduction of various stimuli (wounds, chemical agents) in plants, which were earlier thought to be of chemical in nature. These claims were experimentally proved by Wildon et al (Nature, 1992, 360, 62–65). He also studied for the first time action of microwaves in plant tissues and corresponding changes in the cell membrane potential, mechanism of effect of seasons in plants, effect of chemical inhibitor on plant stimuli, effect of temperature etc. He claimed that plants can "feel pain, understand affection etc.," from the analysis of the nature of variation of the cell membrane potential of plants, under different circumstances. According to him a plant treated with care and affection gives out a different vibration compared to a plant subjected to torture.

In 1896, Bose wrote Niruddesher Kahini, the first major work in Bangla science fiction. Later, he added the story in the Obbakto book as Polatok Tufan. He was the first science fiction writer in the Bengali language.^{[citation needed]}

Bose was not interested in patenting his invention. In his Friday Evening Discourse at the Royal Institution, London, he made public his construction of the coherer. Thus The Electric Engineer expressed "surprise that no secret was at anytime made as to its construction, so that it has been open to all the world to adopt it for practical and possibly moneymaking purposes."^[4] Bose declined an offer from a wireless apparatus manufacturer for signing a remunerative agreement. One of Bose's American friends, Sara Chapman Bull, succeeded in persuading him to file a patent application for "detector for electrical disturbances". The application was filed on September 30, 1901 and it was granted on 29 March 1904 as US patent 755840 .^[17]

Speaking in New Delhi in August 2006, at a seminar titled Owning the Future: Ideas and Their Role in the Digital Age, Dr. V S Ramamurthy, the Chairman of the Board of Governors of IIT Delhi, stressed the attitude of Bose towards patents:

"His reluctance to any form of patenting is well known. It was contained in his letter to (Indian Nobel laureate) Rabindranath Tagore dated May 17, 1901 from London. It was not that Sir Jagadish was unaware of patents and its advantages. He was the first Indian to get a US Patent (No: 755840) in 1904. And Sir Jagadish was not alone in his avowed reluctance to patenting. Roentgen, Pierre Curie and others also chose the path of no patenting on moral grounds."

Bose also recorded his attitude towards patents in his inaugural lecture at the foundation of the Bose Institute, on November 30, 1917.

Bose’s place in history has now been re-evaluated, and he is credited with the invention of the first wireless detection device and the discovery of millimetre length electromagnetic waves and considered a pioneer in the field of biophysics.

Many of his instruments are still on display and remain largely usable now, over 100 years later. They include various antennas, polarisers, and waveguides, which remain in use in modern forms today.

Commemorating his birth centenary in 1958, the JBNSTS scholarship programme was started in West Bengal.

• Nature published about 27 papers.
• J.C. Bose, Collected Physical Papers. New York, N.Y.: Longmans, Green and Co., 1927
• Researches into the Irritability of Plants
• The Ascent of Sap
• The Nervous Mechanisms of Plants

• Knighthood, 1916
• Fellow of the Royal Society (1920)
• Member of the Vienna Academy of Science, 1928
• President of the 14th session of the Indian Science Congress in 1927.
• Member of the League of Nations' Committee for Intellectual Cooperation
• Founding fellow of the National Institute of Sciences of India (now renamed as the Indian National Science Academy)

• G.L. Pearson, and W.H. Brattain, "History of Semiconductor Research," Proc. IRE, 43, pp.1794-1806, 1955
• Canny, M. J., Ann. Bot., 1995, 75, 343–357.
• Canny, M. J., Am. J. Bot., 1998, 85, 897–909.
• Canny, M. J., Am. Sci., 1998, 86, 152–159
• Wayne, R., Bot. Rev., 1994, 60, 265–367.
• Pickard, B. G., Bot. Rev., 1973, 39, 172–201.
• Davies, E., Plant Cell Environ., 1987a, 10, 623–631.
• Davies, E., in The Biochemistry of Plants, Academic Press, 1987b, vol. 12, pp. 243–264.
• Wildon, D. C. et al, Nature, 1992, 360, 62–65.
• Roberts, K., Nature, 1992, 360, 14–15
• C. Schaefer and G. Gross, "Untersuchungen ueber die Totalreflexion," Annalen der Physik, vol 32, p.648, 1910.
• J.M. Payne & P.R. Jewell, "The Upgrade of the NRAO 8-beam Receiver," in Multi-feed Systems for Radio Telescopes, D.T. Emerson & J.M. Payne, Eds. San Francisco: ASP Conference Series, 1995, vol. 75, p.144
• Frontiers in Biophysics, Vol. 6. Chapter "The ascent of sap", pp. 11-14.

• Bose Institute Website
• Biography at Calcuttaweb
• [1] J. C. Bose, The Unsung hero of radio communication
• JC Bose: 60 GHz in the 1890s
• [2] Science Magazine on Bose priority
• Article on Jagadish Chandra Bose, Banglapedia
• [3]
• [4]
• INSA publication
• [5]
• Radio history
• Vigyan Prasar article
• Frontline article
• India's Great Scientist, J. C. Bose

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Persondata
NAME	Jagadish Chandra Bose
ALTERNATIVE NAMES	Jagadish Chandra Bose; J.C. Bose
SHORT DESCRIPTION	Indian physicist
DATE OF BIRTH	30 November 1858
PLACE OF BIRTH	Mymensingh, Bangladesh
DATE OF DEATH	23 November 1937
PLACE OF DEATH	Giridih, Jharkhand, India