Search results
Results from the WOW.Com Content Network
1962 Nick Holonyak Jr. develops the first practical visible-spectrum (red) light-emitting diode. 1963 Kurt Schmidt invents the first high pressure sodium-vapor lamp. [18] 1972 M. George Craford invents the first yellow light-emitting diode. 1972 Herbert Paul Maruska and Jacques Pankove create the first violet light-emitting diode.
The first publication in Germany in this format appears 1953rd; The British physicist Dennis Gabor (1900–1979) invents holography. This method of recording and reproducing image with coherent light allows three-dimensional images. It was not until 1971 when the procedure gained practical importance, he received the Nobel Prize for Physics. 1949
He could "read a book at a distance of one and a half feet". [2] However, he did little to establish his claim or to develop the device. In 1854 Lindsay took out a patent for his system of wireless telegraphy through water. This was the culmination of many years' painstaking experimentation in various parts of the country.
Frederick Albert Winsor, originally Friedrich Albrecht Winzer (1763 in Braunschweig, Principality of Brunswick-Wolfenbüttel – 11 May 1830 in Paris) was a German inventor, one of the pioneers of gas lighting in the UK and France. Winsor went to Britain before 1799 and became interested in the technology and economics of fuels.
Lewis Howard Latimer (September 4, 1848 – December 11, 1928) was an American inventor and patent draftsman. His inventions included an evaporative air conditioner, an improved process for manufacturing carbon filaments for electric light bulbs, and an improved toilet system for railroad cars.
2004: First podcast, invented by Adam Curry and Dave Winer, is a program made available in digital format for download over the Internet and it usually features one or more recurring hosts engaged in a discussion about a particular topic or current event. [544] [545] [546] 2005: YouTube, the first popular video-streaming site, was founded
Diagram of Double gas apparatus at Newport Light House, from David Melville’s 1817-1818 Meteorological Diary Letter from David Melville to Thomas Jefferson, Monticello, Virginia, January 23, 1822 David Melville (March 21, 1773 - September 3, 1856) was an American inventor, credited with the first gas street lighting in America, and the first ...
Written in 1893, the book is a record of Tesla's pioneering activities, research, and works. [2] Tesla is recognized as one of the foremost electrical researchers and inventors. [3] At the time of publication, the book was the "bible" of every electrical engineer practicing the profession.