Sir Timothy John Berners-Lee known as TimBL, is an English engineer and computer scientist, best known as the inventor of the World Wide Web. He is a professor of computer science at the University of Oxford and the Massachusetts Institute of Technology, he made a proposal for an information management system on March 12, 1989, he implemented the first successful communication between a Hypertext Transfer Protocol client and server via the internet in mid-November the same year. Berners-Lee is the director of the World Wide Web Consortium, which oversees the continued development of the Web, he is the founder of the World Wide Web Foundation and is a senior researcher and holder of the 3Com founders chair at the MIT Computer Science and Artificial Intelligence Laboratory. He is a director of the Web Science Research Initiative, a member of the advisory board of the MIT Center for Collective Intelligence. In 2011, he was named as a member of the board of trustees of the Ford Foundation, he is a founder and president of the Open Data Institute, is an advisor at social network MeWe.
In 2004, Berners-Lee was knighted by Queen Elizabeth II for his pioneering work. In April 2009, he was elected a foreign associate of the United States National Academy of Sciences. Named in Time magazine's list of the 100 Most Important People of the 20th century, Berners-Lee has received a number of other accolades for his invention, he was honoured as the "Inventor of the World Wide Web" during the 2012 Summer Olympics opening ceremony, in which he appeared in person, working with a vintage NeXT Computer at the London Olympic Stadium. He tweeted "This is for everyone", spelled out in LCD lights attached to the chairs of the 80,000 people in the audience. Berners-Lee received the 2016 Turing Award "for inventing the World Wide Web, the first web browser, the fundamental protocols and algorithms allowing the Web to scale". Berners-Lee was born in London, United Kingdom, one of four children born to Mary Lee Woods and Conway Berners-Lee, his parents worked on the first commercially built computer, the Ferranti Mark 1.
He attended Sheen Mount Primary School, went on to attend south west London's Emanuel School from 1969 to 1973, at the time a direct grant grammar school, which became an independent school in 1975. A keen trainspotter as a child, he learnt about electronics from tinkering with a model railway, he studied at The Queen's College, from 1973 to 1976, where he received a first-class bachelor of arts degree in physics. While he was at university, Berners-Lee made a computer out of an old television set, which he bought from a repair shop. After graduation, Berners-Lee worked as an engineer at the telecommunications company Plessey in Poole, Dorset. In 1978, he joined D. G. Nash in Ferndown, where he helped create type-setting software for printers. Berners-Lee worked as an independent contractor at CERN from June to December 1980. While in Geneva, he proposed a project based on the concept of hypertext, to facilitate sharing and updating information among researchers. To demonstrate it, he built a prototype system named ENQUIRE.
After leaving CERN in late 1980, he went to work at John Poole's Image Computer Systems, Ltd, in Bournemouth, Dorset. He ran the company's technical side for three years; the project he worked on was a "real-time remote procedure call" which gave him experience in computer networking. In 1984, he returned to CERN as a fellow. In 1989, CERN was the largest internet node in Europe, Berners-Lee saw an opportunity to join hypertext with the internet: I just had to take the hypertext idea and connect it to the Transmission Control Protocol and domain name system ideas and—ta-da!—the World Wide Web... Creating the web was an act of desperation, because the situation without it was difficult when I was working at CERN later. Most of the technology involved in the web, like the hypertext, like the internet, multifont text objects, had all been designed already. I just had to put them together, it was a step of generalising, going to a higher level of abstraction, thinking about all the documentation systems out there as being part of a larger imaginary documentation system.
Berners-Lee wrote his proposal in March 1989 and, in 1990, redistributed it. It was accepted by his manager, Mike Sendall, who called his proposals'vague, but exciting', he used similar ideas to those underlying the ENQUIRE system to create the World Wide Web, for which he designed and built the first Web browser. His software functioned as an editor, the first Web server, CERN HTTPd. Mike Sendall buys a NeXT cube for evaluation, gives it to Tim. Tim's prototype implementation on NeXTStep is made in the space of a few months, thanks to the qualities of the NeXTStep software development system; this prototype offers WYSIWYG browsing/authoring! Current Web browsers used in'surfing the internet' are mere passive windows, depriving the user of the possibility to contribute. During some sessions in the CERN cafeteria, Tim and I try to find a catching name for the system. I was determined that the name should not yet again be taken from Greek mythology..... Tim proposes'World-Wide Web'. I like this much, except that it is difficult to pronounce in French... by Robert Cailliau, 2 November 1995.
The first website was built at CERN. Despite this being an international organisation hosted by Switzerland, the office that Berners-Lee used was just across the border in France; the website was put online on 6 August 1991 for the first time: info.cern.ch was th
A pager is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can acknowledge, reply to, originate messages using an internal transmitter. Pagers operate as part of a paging system which includes one or more fixed transmitters, as well as a number of pagers carried by mobile users; these systems can range from a restaurant system with a single low-power transmitter, to a nationwide system with thousands of high-power base stations. Pagers were developed in the 1950s and 1960s, became used by the 1980s. In the 21st century, the widespread availability of cellphones and smartphones has diminished the pager industry. Pagers continue to be used by some emergency services and public safety personnel, because modern pager systems' coverage overlap, combined with use of satellite communications, can make paging systems more reliable than terrestrial-based cellular networks in some cases, including during natural and man-made disasters.
This resilience has led public safety agencies to adopt pagers over cellular and other commercial services for critical messaging. The UK National Health Service is thought to use over 10% of remaining pagers in 2017, with an annual cost of £6.6 million. Matt Hancock announced in February 2019; the first telephone pager system was patented in 1949 by Alfred J. Gross. One of the first practical paging services was launched in 1950 for physicians in the New York City area. Physicians paid $12 per month for the service and carried a 200-gram pager that would receive phone messages within 40 kilometres of a single transmitter tower; the system was operated by Telanswerphone. In 1960, John Francis Mitchell combined elements of Motorola's walkie-talkie and automobile radio technologies to create the first transistorized pager, from that time, paging technology continued to advance, pager adoption among emergency personnel is still popular, as of July 2016. In 1962 the Bell System—the U. S. telephone monopoly colloquially known as "Ma Bell"—presented its Bellboy radio paging system at the Seattle World's Fair.
Bellboy was the first commercial system for personal paging. It marked one of the first consumer applications of the transistor, for which three Bell Labs inventors received a Nobel Prize in Physics in 1956. Solid-state circuitry enabled the Bellboy pager, about the size of a small TV remote device, to fit into a customer's pocket or purse, quite a feat at that time; the Bellboy was a terminal. When the person received an audible signal on the pager, he found a telephone and called the service centre, which informed him of the caller's message. Bell System Bellboy radio pagers each used three reed receiver relays, each relay tuned to one of 33 different frequencies, selectively ringing a particular customer when all three relays were activated at the same time—a precursor of DTMF; the ReFLEX protocol was developed in the mid-1990s. While Motorola announced the end of its new pager manufacturing in 2001, pagers remained in use in large hospital complexes. Another is a facility handling classified information, where various radio transmitter or data storage devices are excluded to ensure security.
First responders in rural areas with inadequate cellular coverage are issued pagers. The 2005 London bombings resulted in overload of TETRA systems by the emergency services, showed that pagers, with their absence of necessity to transmit an acknowledgement before showing the message, the related capability to operate on low signal levels, are not outclassed by their successors. Volunteer firefighters, EMS paramedics, rescue squad members carry pagers to alert them of emergency call outs for their department; these pagers receive a special tone from a fire department radio frequency. Restaurant pagers were in wide use in the 2000s. Customers were given a portable receiver that vibrates, flashes, or beeps when a table becomes free or when their meal is ready. Pagers have been popular with birdwatchers in Britain and Ireland since 1991, with companies Rare Bird Alert and Birdnet Information offering news of rare birds sent to pagers that they sell; the U. S. paging industry generated $2.1 billion in revenue in 2008, down from $6.2 billion in 2003.
In Canada, 161,500 Canadians paid $18.5 million for pager service in 2013. Telus, one of the three major mobile carriers, announced the end to its Canadian pager service as of March 31, 2015, but rivals Bell and PageNet intend to continue service. Many paging network operators now allow numeric and textual pages to be submitted to the paging networks via email; this is convenient for many users, due to the widespread adoption of email. This can result in pager messages being lost. Older forms of message submission using the Telelocator Alphanumeric Protocol involve modem connections directly to a paging network, are less subject to these delays. For this reason, older forms of message submission retain their usefulness for disseminating highly-important alerts to users such as emergency services personnel. Common paging protocols include TAP, FLEX, ReFLEX, POCSAG, GOLAY, ERMES and NTT. Past paging protocols include 5/6-tone. In the United States, pagers receive signals using the FLEX protocol in th
Telegraphy is the long-distance transmission of textual or symbolic messages without the physical exchange of an object bearing the message. Thus semaphore is a method of telegraphy. Telegraphy requires that the method used for encoding the message be known to both sender and receiver. Many methods are designed according to the limits of the signalling medium used; the use of smoke signals, reflected light signals, flag semaphore signals are early examples. In the 19th century, the harnessing of electricity led to the invention of electrical telegraphy; the advent of radio in the early 20th century brought about radiotelegraphy and other forms of wireless telegraphy. In the Internet age, telegraphic means developed in sophistication and ease of use, with natural language interfaces that hide the underlying code, allowing such technologies as electronic mail and instant messaging; the word "telegraph" was first coined by the French inventor of the Semaphore telegraph, Claude Chappe, who coined the word "semaphore".
A "telegraph" is a device for transmitting and receiving messages over long distances, i.e. for telegraphy. The word "telegraph" alone now refers to an electrical telegraph. Wireless telegraphy, transmission of messages over radio with telegraphic codes. Contrary to the extensive definition used by Chappe, Morse argued that the term telegraph can be applied only to systems that transmit and record messages at a distance; this is to be distinguished from semaphore, which transmits messages. Smoke signals, for instance, are to be considered semaphore, not telegraph. According to Morse, telegraph dates only from 1832 when Pavel Schilling invented one of the earliest electrical telegraphs. A telegraph message sent by an electrical telegraph operator or telegrapher using Morse code was known as a telegram. A cablegram was a message sent by a submarine telegraph cable shortened to a cable or a wire. A Telex was a message sent by a Telex network, a switched network of teleprinters similar to a telephone network.
A wire picture or wire photo was a newspaper picture, sent from a remote location by a facsimile telegraph. A diplomatic telegram known as a diplomatic cable, is the term given to a confidential communication between a diplomatic mission and the foreign ministry of its parent country; these continue to be called cables regardless of the method used for transmission. Passing messages by signalling over distance is an ancient practice. One of the oldest examples is the signal towers of the Great Wall of China. In 400 BC, signals could drum beats. By 200 BC complex flag signalling had developed, by the Han dynasty signallers had a choice of lights, flags, or gunshots to send signals. By the Tang dynasty a message could be sent 700 miles in 24 hours; the Ming dynasty added artillery to the possible signals. While the signalling was complex, only predetermined messages could be sent; the Chinese signalling system extended well beyond the Great Wall. Signal towers away from the wall were used to give early warning of an attack.
Others were built further out as part of the protection of trade routes the Silk Road. Signal fires were used in Europe and elsewhere for military purposes; the Roman army made frequent use of them, as did their enemies, the remains of some of the stations still exist. Few details have been recorded of European/Mediterranean signalling systems and the possible messages. One of the few for which details are known is a system invented by Aeneas Tacticus. Tacitus's system had water filled pots at the two signal stations which were drained in synchronisation. Annotation on a floating scale indicated which message was being received. Signals sent by means of torches indicated when to start and stop draining to keep the synchronisation. None of the signalling systems discussed above are true telegraphs in the sense of a system that can transmit arbitrary messages over arbitrary distances. Lines of signalling relay stations can send messages to any required distance, but all these systems are limited to one extent or another in the range of messages that they can send.
A system like flag semaphore, with an alphabetic code, can send any given message, but the system is designed for short-range communication between two persons. An engine order telegraph, used to send instructions from the bridge of a ship to the engine room, fails to meet both criteria. There was only one ancient signalling system described; that was a system using the Polybius square to encode an alphabet. Polybius suggested using two successive groups of torches to identify the coordinates of the letter of the alphabet being transmitted; the number of said torches held up signalled the grid square. The system would have been slow for military purposes and there is no record of it being used. An optical telegraph, or semaphore telegraph is a telegraph consisting of a line of stations in towers or natural high points which signal to each other by means of shutters or paddles. Early proposals for an optical telegraph system were made to the Royal Society by Robert Hooke in 1684 and were first implemented on an experimental level by Sir Richard Lovell Edgeworth in 1767.
The first successful optical telegraph network was invented by Claude Chappe and operated in France from 1
The photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D. C. Both were to become full associates in the Volta Laboratory Association and financed by Bell. On June 3, 1880, Bell's assistant transmitted a wireless voice telephone message from the roof of the Franklin School to the window of Bell's laboratory, some 213 meters away. Bell believed. Of the 18 patents granted in Bell's name alone, the 12 he shared with his collaborators, four were for the photophone, which Bell referred to as his "greatest achievement", telling a reporter shortly before his death that the photophone was "the greatest invention made, greater than the telephone"; the photophone was a precursor to the fiber-optic communication systems that achieved worldwide popular usage starting in the 1980s. The master patent for the photophone was issued in December 1880, many decades before its principles came to have practical applications.
The photophone was similar to a contemporary telephone, except that it used modulated light as a means of wireless transmission while the telephone relied on modulated electricity carried over a conductive wire circuit. Bell's own description of the light modulator: We have found that the simplest form of apparatus for producing the effect consists of a plane mirror of flexible material against the back of which the speaker's voice is directed. Under the action of the voice the mirror becomes alternately convex and concave and thus alternately scatters and condenses the light; the brightness of a reflected beam of light, as observed from the location of the receiver, therefore varied in accordance with the audio-frequency variations in air pressure—the sound waves—which acted upon the mirror. In its initial form, the photophone receiver was non-electronic, using the photoacoustic effect. Bell found. Lampblack proved to be outstanding. Using a modulated beam of sunlight as a test signal, one experimental receiver design, employing only a deposit of lampblack, produced a tone that Bell described as "painfully loud" to an ear pressed close to the device.
In its ultimate electronic form, the photophone receiver used a simple selenium cell photodetector at the focus of a parabolic mirror. The cell's electrical resistance varied inversely with the light falling upon it, i.e. its resistance was higher when dimly lit, lower when brightly lit. The selenium cell took the place of a carbon microphone—also a variable-resistance device—in the circuit of what was otherwise an ordinary telephone, consisting of a battery, an electromagnetic earphone, the variable resistance, all connected in series; the selenium modulated the current flowing through the circuit, the current was converted back into variations of air pressure—sound—by the earphone. In his speech to the American Association for the Advancement of Science in August 1880, Bell gave credit for the first demonstration of speech transmission by light to Mr. A. C. Brown of London in the Fall of 1878; because the device used radiant energy, the French scientist Ernest Mercadier suggested that the invention should not be named'photophone', but'radiophone', as its mirrors reflected the Sun's radiant energy in multiple bands including the invisible infrared band.
Bell used the name for a while but it should not be confused with the invention "radiophone" which used radio waves. While honeymooning in Europe with his bride Mabel Hubbard, Bell read of the newly discovered property of selenium having a variable resistance when acted upon by light, in a paper by Robert Sabine as published in Nature on 25 April 1878. In his experiments, Sabine used a meter to see the effects of light acting on selenium connected in a circuit to a battery; however Bell reasoned that by adding a telephone receiver to the same circuit he would be able to hear what Sabine could only see. As Bell's former associate, Thomas Watson, was occupied as the superintendent of manufacturing for the nascent Bell Telephone Company back in Boston, Bell hired Charles Sumner Tainter, an instrument maker, assigned to the U. S. 1874 Transit of Venus Commission, for his new'L' Street laboratory in Washington, at the rate of $15 per week. On February 19, 1880 the pair had managed to make a functional photophone in their new laboratory by attaching a set of metallic gratings to a diaphragm, with a beam of light being interrupted by the gratings movement in response to spoken sounds.
When the modulated light beam fell upon their selenium receiver Bell, on his headphones, was able to hear Tainter singing Auld Lang Syne. In an April 1, 1880 Washington, D. C. experiment and Tainter communicated some 79 metres along an alleyway to the laboratory's rear window. A few months on June 21 they succeeded in communicating over a distance of some 213 meters, using plain sunlight as their light source, practical electrical lighting having only just been introduced to the U. S. by Edison. The transmitter in their latter experiments had sunlight reflected off the surface of a thin mirror positioned at the end of a speaking tube. Tainter, on the roof of the Franklin School, spoke to Bell, in his laboratory listeni
A computer network is a digital telecommunications network which allows nodes to share resources. In computer networks, computing devices exchange data with each other using connections between nodes; these data links are established over cable media such as wires or optic cables, or wireless media such as Wi-Fi. Network computer devices that originate and terminate the data are called network nodes. Nodes are identified by network addresses, can include hosts such as personal computers and servers, as well as networking hardware such as routers and switches. Two such devices can be said to be networked together when one device is able to exchange information with the other device, whether or not they have a direct connection to each other. In most cases, application-specific communications protocols are layered over other more general communications protocols; this formidable collection of information technology requires skilled network management to keep it all running reliably. Computer networks support an enormous number of applications and services such as access to the World Wide Web, digital video, digital audio, shared use of application and storage servers and fax machines, use of email and instant messaging applications as well as many others.
Computer networks differ in the transmission medium used to carry their signals, communications protocols to organize network traffic, the network's size, traffic control mechanism and organizational intent. The best-known computer network is the Internet; the chronology of significant computer-network developments includes: In the late 1950s, early networks of computers included the U. S. military radar system Semi-Automatic Ground Environment. In 1959, Anatolii Ivanovich Kitov proposed to the Central Committee of the Communist Party of the Soviet Union a detailed plan for the re-organisation of the control of the Soviet armed forces and of the Soviet economy on the basis of a network of computing centres, the OGAS. In 1960, the commercial airline reservation system semi-automatic business research environment went online with two connected mainframes. In 1963, J. C. R. Licklider sent a memorandum to office colleagues discussing the concept of the "Intergalactic Computer Network", a computer network intended to allow general communications among computer users.
In 1964, researchers at Dartmouth College developed the Dartmouth Time Sharing System for distributed users of large computer systems. The same year, at Massachusetts Institute of Technology, a research group supported by General Electric and Bell Labs used a computer to route and manage telephone connections. Throughout the 1960s, Paul Baran and Donald Davies independently developed the concept of packet switching to transfer information between computers over a network. Davies pioneered the implementation of the concept with the NPL network, a local area network at the National Physical Laboratory using a line speed of 768 kbit/s. In 1965, Western Electric introduced the first used telephone switch that implemented true computer control. In 1966, Thomas Marill and Lawrence G. Roberts published a paper on an experimental wide area network for computer time sharing. In 1969, the first four nodes of the ARPANET were connected using 50 kbit/s circuits between the University of California at Los Angeles, the Stanford Research Institute, the University of California at Santa Barbara, the University of Utah.
Leonard Kleinrock carried out theoretical work to model the performance of packet-switched networks, which underpinned the development of the ARPANET. His theoretical work on hierarchical routing in the late 1970s with student Farouk Kamoun remains critical to the operation of the Internet today. In 1972, commercial services using X.25 were deployed, used as an underlying infrastructure for expanding TCP/IP networks. In 1973, the French CYCLADES network was the first to make the hosts responsible for the reliable delivery of data, rather than this being a centralized service of the network itself. In 1973, Robert Metcalfe wrote a formal memo at Xerox PARC describing Ethernet, a networking system, based on the Aloha network, developed in the 1960s by Norman Abramson and colleagues at the University of Hawaii. In July 1976, Robert Metcalfe and David Boggs published their paper "Ethernet: Distributed Packet Switching for Local Computer Networks" and collaborated on several patents received in 1977 and 1978.
In 1979, Robert Metcalfe pursued making Ethernet an open standard. In 1976, John Murphy of Datapoint Corporation created ARCNET, a token-passing network first used to share storage devices. In 1995, the transmission speed capacity for Ethernet increased from 10 Mbit/s to 100 Mbit/s. By 1998, Ethernet supported transmission speeds of a Gigabit. Subsequently, higher speeds of up to 400 Gbit/s were added; the ability of Ethernet to scale is a contributing factor to its continued use. Computer networking may be considered a branch of electrical engineering, electronics engineering, telecommunications, computer science, information technology or computer engineering, since it relies upon the theoretical and practical application of the related disciplines. A computer network facilitates interpersonal communications allowing users to communicate efficiently and via various means: email, instant messaging, online chat, video telephone calls, video conferencing. A network allows sharing of computing resources.
Users may access and use resources provided by devices on the network, such as printing a document on a shared network printer or use of a shared storage device. A network allows sharing of files, and
The telautograph, an analog precursor to the modern fax machine, transmits electrical impulses recorded by potentiometers at the sending station to servomechanisms attached to a pen at the receiving station, thus reproducing at the receiving station a drawing or signature made by the sender. It was the first such device to transmit drawings to a stationary sheet of paper; the telautograph's invention is attributed to Elisha Gray, who patented it on July 31, 1888. Gray's patent stated that the telautograph would allow "one to transmit his own handwriting to a distant point over a two-wire circuit." It was the first facsimile machine in which the stylus was controlled by horizontal and vertical bars. The telautograph was first publicly exhibited at the 1893 World's Columbian Exposition held in Chicago. While the patent schema's geometry implies vertical and horizontal coordinates, systems used in the 20th Century had a different coordinate scheme, based on transmitting two angles. In an 1888 interview in The Manufacturer & Builder Gray made this statement: By my invention you can sit down in your office in Chicago, take a pencil in your hand, write a message to me, as your pencil moves, a pencil here in my laboratory moves and forms the same letters and words in the same way.
What you write in Chicago is reproduced here in fac-simile. You may write in any language, use a code or cipher, no matter, a fac-simile is produced here. If you want to draw a picture it is the same, the picture is reproduced here; the artist of your newspaper can, by this device, telegraph his pictures of a railway wreck or other occurrences just as a reporter telegraphs his description in words. By the end of the 19th century, the telautograph was modified by Foster Ritchie. Calling it the telewriter, Ritchie's version of the telautograph could be operated using a telephone line for simultaneous copying and speaking; the telautograph became popular for the transmission of signatures over a distance, in banks and large hospitals to ensure that doctors' orders and patient information were transmitted and accurately. Teleautograph systems were installed in a number of major railroad stations to relay hand-written reports of train movements from the interlocking tower to various parts of the station.
The teleautograph network in Grand Central Terminal included a public display in the main concourse into the 1960s. A Telautograph was used in 1911 to warn workers on the 10th floor about the Triangle Shirtwaist Factory fire that had broken out two floors below. An example of a Telautograph machine writing script can be seen in the 1956 movie Earth vs the Flying Saucers as the output device for the mechanical translator. Telautograph Corporation changed its name several times. In 1971, it was acquired by Arden/Mayfair. In 1993, Danka Industries renamed it Danka/Omnifax. In 1999, Xerox corporation purchased the company and called it the Omnifax division, which has since been absorbed by the corporation. Archive of Xerox Omnifax Division website, the successor to Telautograph Corporation. Telautograph historical description "Telautograph"; the New Student's Reference Work. 1914. Patent images in TIFF format U. S. Patent 0,386,814 Art of Telegraphy, issued July 1888 U. S. Patent 0,386,815 Telautograph, issued July 1888 U.
S. Patent 0,461,470Telautograph, issued October 1891 U. S. Patent 0,461,472 Art of and Apparatus for Telautographic Communication, issued October 1891 U. S. Patent 0,491,347 Telautograph, issued February 1893 U. S. Patent 0,494,562 Telautograph, issued April 1893
Jagadish Chandra Bose
Sir Jagadish Chandra Bose spelled Jagdish and Jagadis, was a polymath, biologist, biophysicist and archaeologist, an early writer of science fiction from India. He pioneered the investigation of radio and microwave optics, made significant contributions to plant science, laid the foundations of experimental science in the Indian subcontinent. IEEE named him one of the fathers of radio science. Bose is considered the father of Bengali science fiction, invented the crescograph, a device for measuring the growth of plants. A crater on the moon has been named in his honour. Born in Munsiganj, Bengal Presidency, during British governance of India, Bose graduated from St. Xavier's College, Calcutta, he 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 joined the Presidency College of the 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, 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 objections to any form of patenting was well known. To facilitate his research, he constructed automatic recorders capable of registering slight movements, his books include Response in The Nervous Mechanism of Plants. In 2004, Bose was ranked number 7 in BBC's poll of the Greatest Bengali of all time.
Jagadish Chandra Bose was born in a Bengali Kayastha family in Munsiganj, Bengal Presidency on 30 November 1858. His father, Bhagawan Chandra Bose, was a leading member of the Brahmo Samaj and worked as a deputy magistrate and assistant commissioner in Faridpur 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, that one should know 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, the son of a fisherman sat on my left, they were my playmates. I listened spellbound to their stories of birds and aquatic creatures; 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 and Muslims. Bose joined the Hare School in 1869 and St. Xavier's School at Kolkata. In 1875, he passed the Entrance Examination of the 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 sciences, he received a BA from the 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. The odour in the dissection rooms is said to have exacerbated his illness. Through the recommendation of Anandamohan Bose, his brother-in-law and the first Indian wrangler, he secured admission in Christ's College, Cambridge to study natural sciences, he received a BA from the University of Cambridge and a BSc from the University of London in 1884, a DSc from the University of London in 1896. Among Bose's teachers at Cambridge were Lord Rayleigh, Michael Foster, James Dewar, Francis Darwin, Francis Balfour, Sidney Vines. At the time when Bose was a student at Cambridge, Prafulla Chandra Roy was a student at Edinburgh, they became intimate friends. He was married to Abala Bose, the renowned feminist and social worker. One of the important influence on Bose was Sister Nivedita who supported him by organizing the financial support and editing his manuscripts, she made sure that Bose was able to continue with and share his work; 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, Ger