ప్రపంచాన్ని మార్చగల ఆవిష్కరణలు | 5 Hidden Lost Inventions | Nikola Tesla

ప్రపంచాన్ని మార్చగల ఆవిష్కరణలు | 5 Hidden Lost Inventions | Nikola Tesla
For the science fiction weapon, see Raygun. For other uses, see Deathray (disambiguation).
A Martian tripod firing its deadly heat ray, from H G Wells' The War of the Worlds
The death ray or death beam was a theoretical particle beam or electromagnetic weapon first theorized around the 1920s and 1930s. Around that time, notable inventors such as Guglielmo Marconi,[1] Nikola Tesla, Harry Grindell Matthews, Edwin R. Scott, Erich Graichen[2] and others claimed to have invented it independently.[3] In 1957, the National Inventors Council was still issuing lists of needed military inventions that included a death ray.[4]
While based in fiction, research into energy-based weapons inspired by past speculation has contributed to real-life weapons in use by modern militaries sometimes called a sort of "death ray", such as the United States Navy and its Laser Weapon System (LaWS) deployed in mid-2014.[5][6] Such armaments are technically known as directed-energy weapons.
History
In 1923, Edwin R. Scott, an inventor from San Francisco, claimed he was the first to develop a death ray that would destroy human life and bring down planes at a distance.[7] He was born in Detroit, and he claimed he worked for nine years as a student and protégé of Charles P. Steinmetz.[8] Harry Grindell-Matthews tried to sell what he reported to be a death ray to the British Air Ministry in 1924. He was never able to show a functioning model or demonstrate it to the military.[7]
Nikola Tesla claimed to have invented a "death beam" which he called teleforce in the 1930s and continued the claims up until his death.[9][10][11] Tesla explained that "this invention of mine does not contemplate the use of any so-called 'death rays'. Rays are not applicable because they cannot be produced in requisite quantities and diminish rapidly in intensity with distance. All the energy of New York City (approximately two million horsepower) transformed into rays and projected twenty miles, could not kill a human being, because, according to a well known law of physics, it would disperse to such an extent as to be ineffectual. My apparatus projects particles which may be relatively large or of microscopic dimensions, enabling us to convey to a small area at a great distance trillions of times more energy than is possible with rays of any kind. Many thousands of horsepower can thus be transmitted by a stream thinner than a hair, so that nothing can resist."[12] Tesla proposed that a nation could "destroy anything approaching within 200 miles... [and] will provide a wall of power" in order to "make any country, large or small, impregnable against armies, airplanes, and other means for attack".[12] He claimed to have worked on the project since about 1900, and said that it drew power from the ionosphere, which he called "an invisible ball of energy surrounding Earth". He said that he had done this with the help of a 50-foot Tesla coil.
In 1934, Antonio Longoria claimed to have a death ray that could kill pigeons from four miles away and could kill a mouse enclosed in a "thick walled metal chamber".
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