Sir Jagadish Chandra Bose: The Unsung Hero & The Real Inventor of Radio (Wireless receiver)
We all use to listen music,songs,News,Debates,Cricket commentary and many more things on Radio and from our childhood we have read in books and heard from our teachers that Radio is invented by Guglielmo Marconi an Italian Scientist. This invention revolutionized the field of communication because it was wireless and first time the term Wireless Communication comes into existence.
In the year 1998, Dr. Probir K. Bondyopadhyay found out that it was actually Sir J. C. Bose who invented Marconi's Italian Navy Autocoherer. He explained the sequence of events in great detail in his paper, "Sir J. C. Bose's Diode Detector Received Marconi's First Transatlantic Wireless Signal Of December 1901 (The "Italian Navy Coherer" Scandal Revisited)." [ 3, Proc. IEEE, Vol. 86, No. 1, January 1998.]
According to Dr. Probir K. Bondyopadhyay -
The true origin of the “mercury coherer with a telephone”receiver that was used by G. Marconi to receive the first transatlantic wireless signal on December 12, 1901, has been investigated and determined. Incontrovertible evidence is presented to show that this novel wireless detection device was invented by Sir.
J. C. Bose of Presidency College, Calcutta, India. His epoch making work was communicated by Lord Rayleigh, F.R.S., to the Royal Society, London, U.K., on March 6, 1899, and read at the Royal Society Meeting of Great Britain on April 27, 1899. Soon after, it was published in the Proceedings of the Royal Society. Twenty-one months after that disclosure (in February 1901, as the records indicate), Lieutenant L. Solari of the Royal Italian Navy, a childhood friend of G. Marconi’s, experimented with this detector
device and presented a trivially modified version to Marconi, who then applied for a British patent on the device. Surrounded by a scandal, this detection device, actually a semiconductor diode, is known to the outside world as the “Italian Navy Coherer.”
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| Sir J C Bose with his 1st Wireless receiver |
Achievements of Sir J. C. Bose in the field of communication :
- Sir J. C. Bose invented the Mercury Coherer (together with the telephone receiver) used by Guglielmo Marconi to receive the radio signal in his first transatlantic radio communication over a distance of 2000 miles from Poldhu, UK to Newfoundland, St. Johns in December 1901. Guglielmo Marconi was celebrated worldwide for this achievement, but the fact that the receiver was invented by Bose was totally concealed.
- In 1895, Sir J. C. Bose gave his first public demonstration of electromagnetic waves, using them to ring a bell remotely and to explode some gunpowder. He sent an electromagnetic wave across 75 feet passing through walls and body of the Chairman, Lieutenant Governor of Bengal.
- Sir J. C. Bose holds the first patent worldwide to invent a solid-state diode detector to detect EM waves. The detector was built using a galena crystal.
- Sir J. C. Bose was a pioneer in the field of microwave devices. His contribution remains distinguished in the field and was acknowledged by the likes of Lord Kelvin, Lord Rayleigh, etc.
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ReplyDelete1. first to work in mm wave, 60GHz communication, more than 100 years ago, when scientists are terming meter wave as short wave.
2. His invention: crescogragh.
3. He started experipmental scientific research in India.
he had done a lot of work but not recognized as much as other scientists of world.And if we are going write about his all contributions to science and society then we should have to write hundreds of books.But here i had just tried to make people aware about his work in the field of wireless communication which is major concern of present era. I also want that we young Indians arise a voice to get back the patent of radio in the name of Sir J C Bose.
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I agree with you Arvind but it was neither his fault nor others who work on the same thing i.e. the transmission of radio waves. But as we already aware that the Indians are really very kind, while the people from other nations are that kind and generous as Mr. Bose was. And it was his kindness that he refuse to patent his research but the other people like marconi take the benefit of it and patented the wireless transmission. So it's not his fault nor others but in his later age he is destructed, as taught by my professors that he left electronics and move to biology and trying to prove those things that has nothing to do with science....
ReplyDeleteyes you are absolutely right
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