Jagadish Chandra Bose
Sir Jagdish Chandra Bose, CSI, CIE, FRS (//; Bengali pronunciation: [dʒɔgod̪iʃ tʃɔnd̪ro bosu]; 30 November 1858 – 23 November 1937) was a polymath, physicist, biologist, biophysicist, botanist and archaeologist, as well as an early writer of science fiction. Living in British India, he pioneered the investigation of radio and microwave optics, made very significant contributions to plant science, and laid the foundations of experimental science in the Indian subcontinent. IEEE named him one of the fathers of radio science. He is considered the father of Bengali science fiction. He also invented the crescograph. A crater on the moon has been named in his honour.
Born in Munshiganj, Bengal Presidency during the British Raj, Bose graduated from St. Xavier's College, Calcutta. He then went to the University of London to study medicine, but could not pursue studies in medicine because of health problems. Instead, he conducted his research with the Nobel Laureate Lord Rayleigh at Cambridge and returned to India. He then joined the Presidency College of University of Calcutta as a Professor of Physics. There, despite racial discrimination and a lack of funding and equipment, Bose carried on his scientific research. He made remarkable progress in his research of remote wireless signalling and was the first to use semiconductor junctions 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 further develop his research.
Bose subsequently made a number of pioneering discoveries in plant physiology. He used his own invention, the crescograph, to measure plant response to various stimuli, and thereby scientifically proved parallelism between animal and plant tissues. Although Bose filed for a patent for one of his inventions because of peer pressure, his reluctance to any form of patenting was well known. To facilitate his research, he constructed automatic recorders capable of registering extremely slight movements; these instruments produced some striking results, such as Bose's demonstration of an apparent power of feeling in plants, exemplified by the quivering of injured plants. His books include Response in the Living and Non-Living (1902) and The Nervous Mechanism of Plants (1926).
Early life and education
Sir Jagdish Chandra Bose was born in Munshiganj, Bengal Presidency, (present day Bangladesh) on 30 November 1858. His father, Bhagawan Chandra Bose, was a Brahmo and leader of the Brahmo Samaj and worked as a deputy magistrate/ assistant commissioner in Faridpur, Bardhaman and other places.
Bose's education started in a vernacular school, because his father believed that one must know one's own mother tongue before beginning English, and that one should know also one's own people. 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.
Bose joined the Hare School in 1869 and then St. Xavier's School at Kolkata. In 1875, he passed the Entrance Examination (equivalent to school graduation) of University of Calcutta 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 in natural science. He received a bachelor's degree from University of Calcutta in 1879.
Bose wanted to go to England to compete for the Indian Civil Service. However, his father, a civil servant himself, cancelled the plan. He wished his son to be a scholar, who would “rule nobody but himself.” Bose went to England to study Medicine at the University of London. However, he had to quit because of ill health.[self-published source] The odour in the dissection rooms is also said to have exacerbated his illness.
Through the recommendation of Anandamohan 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. Later he was married to Abala Bose, the renowned feminist, and social worker.
On the second day of a two-day seminar held on the occasion of the 150th anniversary of Jagadish Chandra Bose on 28–29 July at The Asiatic Society, Kolkata Professor Shibaji Raha, Director of the Bose Institute, Kolkata told in his valedictory address that he had personally checked the register of the Cambridge University to confirm the fact that in addition to Tripos he received an MA as well from it in 1884.
The Scottish theoretical physicist James Clerk Maxwell mathematically predicted the existence of electromagnetic radiation of diverse wavelengths, but he died in 1879 before his prediction was experimentally verified. Between 1886 and 1888 German physicist Heinrich Hertz published the results of his experiments that showed the existence of electromagnetic waves in free space. Subsequently, British physicist Oliver Lodge, who had also been researching electromagnetic, conducted a commemorative lecture in August 1894 (after Hertz's death) on the quasi optical nature of "Hertzian waves" (radio waves) and demonstrated their similarity to light and vision including reflection and transmission at distances up to 50 metres. Lodge's work was published in book form and caught the attention of scientists in different countries including Bose in India.
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 realised the disadvantages of long waves for studying their light-like properties.
During a November 1894 (or 1895) public demonstration at Town Hall of Kolkata, Bose ignited gunpowder and rang a bell at a distance using millimetre range wavelength microwaves. Lieutenant Governor Sir William Mackenzie witnessed Bose's demonstration in the Kolkata Town Hall. 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."
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.
Bose went to London on a lecture tour in 1896 and met Italian inventor Guglielmo Marconi, who had been developing a radio wave wireless telegraphy system for over a year and was trying to market it to the British post service. In an interview, Bose expressed disinterest in commercial telegraphy and suggested others 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.
Place in radio development
Bose' work in radio microwave optics was specifically directed towards studying the nature of the phenomenon and was not an attempt to develop radio into a communication medium. His experiments took place during this same period (from late 1894 on) when Guglielmo Marconi was making breakthroughs on a radio system specifically designed for wireless telegraphy and others were finding practical applications for radio waves, such as Russian physicist Alexander Stepanovich Popov radio wave base lightning detector, also inspired by Lodge's experiment. Although Bose's work was not related to communication he, like Lodge and other laboratory experimenters, probably had an influence on other inventors trying to develop radio as communications medium.
Bose 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. In fact, further work at millimetre wavelengths was almost non-existent for the following 50 years. In 1897, 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, especially at the Bose Institute in Kolkata. A 1.3 mm multi-beam receiver now in use on the NRAO 12 Metre Telescope, Arizona, US, incorporates concepts from his original 1897 papers.
Sir Nevill 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. In fact, he had anticipated the existence of P-type and N-type semiconductors."
His major contribution in the field of biophysics was the demonstration of the electrical nature of the conduction of various stimuli (e.g., wounds, chemical agents) in plants, which were earlier thought to be of a chemical nature. These claims were later proven experimentally. He was also the first to study the action of microwaves in plant tissues and corresponding changes in the cell membrane potential. He researched the mechanism of the seasonal effect on plants, the effect of chemical inhibitors on plant stimuli and the effect of temperature. From the analysis of the variation of the cell membrane potential of plants under different circumstances, he hypothesised that plants can "feel pain, understand affection etc."
Study of metal fatigue and cell response
Bose performed a comparative study of the fatigue response of various metals and organic tissue in plants. He subjected metals to a combination of mechanical, thermal, chemical, and electrical stimuli and noted the similarities between metals and cells. Bose's experiments demonstrated a cyclical fatigue response in both stimulated cells and metals, as well as a distinctive cyclical fatigue and recovery response across multiple types of stimuli in both living cells and metals.
Bose documented a characteristic electrical response curve of plant cells to electrical stimulus, as well as the decrease and eventual absence of this response in plants treated with anaesthetics or poison. The response was also absent in zinc treated with oxalic acid. He noted a similarity in reduction of elasticity between cooled metal wires and organic cells, as well as an impact on the recovery cycle period of the metal.
In 1896, Bose wrote Niruddesher Kahini (The Story of the Missing One), a short story that was later expanded and added to Abyakta (অব্যক্ত) collection in 1921 with the new title Palatak Tuphan (Runaway Cyclone). It was one of the first works of Bengali science fiction. It has been translated into English by Bodhisattva Chattopadhyay.
Bose and patents
The inventor of "Wireless Telecommunications", 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 any time made as to its construction, so that it has been open to all the world to adopt it for practical and possibly moneymaking purposes."
Bose's place in history has now been re-evaluated. He is now credited with inventing the first wireless detection device, discovering millimetre length electromagnetic waves, and being 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.
On 14 September 2012, Bose's experimental work in millimetre-band radio was recognised as an IEEE Milestone in Electrical and Computer Engineering, the first such recognition of a discovery in India.
|Wikisource has original text related to this article:|
- Nature published about 27 papers.
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- Researches on Irritability of Plants, 1913
- Life Movements in Plants (vol.1), First Published 1918, Reprinted 1985
- Life Movements in Plants, Volume II, 1919
- Physiology of the Ascent of Sap, 1923
- The physiology of photosynthesis, 1924
- The Nervous Mechanisms of Plants, 1926
- Plant Autographs and Their Revelations, 1927
- Growth and tropic movements of plants, 1929
- Motor mechanism of plants, 1928
- J.C. Bose, Collected Physical Papers. New York, N.Y.: Longmans, Green and Co., 1927
- Abyakta (Bengali), 1922
- Companion of the Order of the Indian Empire (CIE, 1903)
- Companion of the Order of the Star of India (CSI, 1912)
- Knight Bachelor (1917)
- Fellow of the Royal Society (FRS, 1920)
- Member of the Vienna Academy of Sciences, 1928
- President of the 14th session of the Indian Science Congress in 1927.
- Member of Finnish Society of Sciences and Letters in 1929.
- Member of the League of Nations' Committee for Intellectual Cooperation
- Founding fellow of the National Institute of Sciences of India (now the Indian National Science Academy)
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- Bose Institute website
- SIR JAGADISH CHANDRA BOSE: the unsung Hero of Radio Communication at web.mit.edu J. C. Bose, The Unsung hero of radio communication
- JC Bose: 60 GHz in the 1890s
- Jeffrey Mervis and Pallava Bagla (1998). "Bose Credited With Key Role in Marconi's Radio Breakthrough". Science. 279 (5350): 476. Bibcode:1998Sci...279..476M. doi:10.1126/science.279.5350.476. Science Magazine on Bose priority
- IEEEGHN: Jagadish Chandra Bose at www.ieeeghn.org
- ECIT Bose article at www.infinityfoundation.com
- INSA publication
- Radio history
- India's Great Scientist, J. C. Bose
- Works by Jagadis Chandra Bose at Project Gutenberg
- Sir Jagadis Chunder Bose by Sir Jagadis Chunder Bose at Project Gutenberg (Project Gutenberg)
- Response in the Living and Non-Living by Jagadis Chandra Bose at Project Gutenberg (Project Gutenberg)
- Works by or about Jagadish Chandra Bose at Internet Archive
- Jagadish Chandra Bose materials in the South Asian American Digital Archive (SAADA)
- Entry on Bangla science fiction by Bodhisattva Chattopadhyay in The Science Fiction Encyclopedia