"""Eureka! Eureka!"" after he had stepped into a bath and noticed that the water level rose, whereupon he suddenly understood that the volume of water displaced must be equal to the volume of the part of his body he had submerged. (This relation is ""not"" what is known as Archimedes' principle—that deals with the ""upthrust"" experienced by a body immersed in a fluid.) He then realized that the volume of irregular objects could be measured with precision, a previously intractable problem. He is said to have been so eager to share his discovery that he leapt out of his bathtub"
"Death ray The death ray or death beam was a wave electric power weapon allegedly invented during the 1920s and 1930s. Guglielmo Marconi, Nikola Tesla, Harry Grindell Matthews, Edwin R. Scott, Graichen and others claimed to have invented it independently. In 1957, the National Inventors Council was still issuing lists of needed military inventions that included a death ray. 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)"
"by his ""invisible ray"" were sold for $6,000,000. He died on, New Year's Eve, December 31, 1970 in Winter Park, Florida. Antonio Longoria Antonio Longoria (August 14, 1890 - December 31, 1970) was a scientist who claimed to have invented a death ray in the 1930s. He was born in Madrid, Spain on August 14, 1890. He received his degree in engineering and a Ph.D. in medicine. In 1911 he emigrated to the United States. He moved to Cleveland, Ohio where he married and had three children. He became the president of the Sterling Electrical Company. He became a naturalized"
"Antonio Longoria Antonio Longoria (August 14, 1890 - December 31, 1970) was a scientist who claimed to have invented a death ray in the 1930s. He was born in Madrid, Spain on August 14, 1890. He received his degree in engineering and a Ph.D. in medicine. In 1911 he emigrated to the United States. He moved to Cleveland, Ohio where he married and had three children. He became the president of the Sterling Electrical Company. He became a naturalized US citizen on December 29, 1919. He claimed in 1936 that patents for his process for welding ferrous and nonferrous metals"
"could be crushed into a cube whose volume could be calculated easily and compared with the mass; but the king did not approve of this. Baffled, Archimedes is said to have taken an immersion bath and observed from the rise of the water upon entering that he could calculate the volume of the gold wreath through the displacement of the water. Upon this discovery, he leapt from his bath and ran naked through the streets shouting, ""Eureka! Eureka!"" (Εύρηκα! Greek ""I have found it""). As a result, the term ""eureka"" entered common parlance and is used today to indicate a"
"Eureka (word) Eureka () is an interjection used to celebrate a discovery or invention. It is a transliteration of an exclamation attributed to Ancient Greek mathematician and inventor Archimedes. ""Eureka"" comes from the Ancient Greek word ""heúrēka"", meaning ""I found (it)"", which is the first person singular perfect indicative active of the verb ""heuriskō"" ""I find"". It is closely related to heuristic, which refers to experience-based techniques for problem solving, learning, and discovery. The accent of the English word is on the second syllable, following Latin rules of accent, which require that a penult (next-to-last syllable) must be accented if"
"Ctesibius Ctesibius or Ktesibios or Tesibius (; fl. 285–222 BC) was a Greek inventor and mathematician in Alexandria, Ptolemaic Egypt. He wrote the first treatises on the science of compressed air and its uses in pumps (and even in a kind of cannon). This, in combination with his work on the elasticity of air ""On pneumatics"", earned him the title of ""father of pneumatics."" None of his written work has survived, including his ""Memorabilia,"" a compilation of his research that was cited by Athenaeus. Ctesibius' most commonly known invention today is a pipe organ (hydraulis), on which the invention of"
"to the military. Nikola Tesla claimed to have invented a ""death beam"" which he called teleforce in the 1930s and continued the claims up until his death. 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"
"Euthanasia device A euthanasia device is a machine engineered to allow an individual to die quickly with minimal pain. The most common devices are those designed to help terminally ill people die by voluntary euthanasia or assisted suicide without prolonged pain. They may be operated by a second party, such as a physician, or by the person wishing to die. There is an ongoing debate on the ethics of euthanasia and the use of euthanasia devices. Invented by Jack Kevorkian, to use this device and called it a ""Thanatron"" or death machine after the Greek daemon, Thanatos. It worked by"
"Democritus Democritus (; , ""Dēmókritos"", meaning ""chosen of the people""; 460– 370 BC) was an Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe. Democritus was born in Abdera, Thrace, around 460 BC, although there are disagreements about the exact year. His exact contributions are difficult to disentangle from those of his mentor Leucippus, as they are often mentioned together in texts. Their speculation on atoms, taken from Leucippus, bears a passing and partial resemblance to the 19th-century understanding of atomic structure that has led some to regard Democritus as more of"
"artificial oyster beds and also in the roofs of structures, saying that ""even if Orata were deprived of the waters of the lake, he would still find oysters on his roof-tiles"". Orata was also credited by Vitruvius with the invention of the hypocaust (underfloor heating), although this is not fully confirmed. What seems certain is that he invented a type of ""hanging baths"" (""""bal(i)nea pensilia""""), some kind of relaxing thermal baths; they are usually considered to be hypocausts. He commercialized them as successfully as the oysters. Sergius Orata became rich due to his inventions; he was distinguished for his love"
"that the goddess Athena, who was already said to have invented the aulos, once looked in the mirror while she was playing it and saw how blowing into it puffed up her cheeks and made her look silly, so she threw the aulos away and cursed it so that whoever picked it up would meet an awful death. Marsyas picked up the aulos and was later killed by Apollo for his hubris. The fifth-century BC poet Telestes doubted that virginal Athena could have been motivated by such vanity. Some account informs about the curse placed on the bearer of the"
"Fermat polygonal number theorem. Eureka (word) Eureka () is an interjection used to celebrate a discovery or invention. It is a transliteration of an exclamation attributed to Ancient Greek mathematician and inventor Archimedes. ""Eureka"" comes from the Ancient Greek word ""heúrēka"", meaning ""I found (it)"", which is the first person singular perfect indicative active of the verb ""heuriskō"" ""I find"". It is closely related to heuristic, which refers to experience-based techniques for problem solving, learning, and discovery. The accent of the English word is on the second syllable, following Latin rules of accent, which require that a penult (next-to-last syllable)"
"them."" Ethics Natural science Nature Mathematics Literature Technical works Commentaries Democritus was depicted on the following contemporary coins/banknotes: Democritus Democritus (; , ""Dēmókritos"", meaning ""chosen of the people""; 460– 370 BC) was an Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe. Democritus was born in Abdera, Thrace, around 460 BC, although there are disagreements about the exact year. His exact contributions are difficult to disentangle from those of his mentor Leucippus, as they are often mentioned together in texts. Their speculation on atoms, taken from Leucippus, bears a passing and partial"
"the British Interplanetary Society. His reputation preceded him and the British Government was no longer interested in his ideas. Harry Grindell Matthews was the fifth husband of singer Ganna Walska: they married in 1938. He died of a heart attack on 11 September 1941. Harry Grindell Matthews Harry Grindell Matthews (17 March 1880 – 11 September 1941) was an English inventor who claimed to have invented a death ray in the 1920s. Harry Grindell Matthews was born on 17 March 1880 in Winterbourne, Gloucestershire. He studied at the Merchant Venturers' School in Bristol and became an electronic engineer. During the"
"means for attack"". 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 had done this with the help of a 50-foot tesla coil. Antonio Longoria in 1934 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"". During World War II, the Germans had at least two projects, and the Japanese one, to create so called death rays. One German project led"
"publicly known heat ray weapon called the Active Denial System was developed by the US military as an experimental weapon to deny the enemy access to an area. A death ray is a weapon that delivers heat ray electromagnetic energy at levels that injure human tissue. The inventor of the death ray, Harry Grindell Matthews, claims to have lost sight in his left eye while developing his death ray weapon based on a primitive microwave magnetron from the 1920s (note that a typical microwave oven induces a tissue damaging cooking effect inside the oven at about 2 kV/m). Electromagnetic waves"
"to employ microwaves created in a large magnetron. Although the concept of a death ray was never put into action, it fueled science fiction stories and led to the science fiction concept of the handheld raygun used by fictional characters such as Flash Gordon. In Alfred Noyes' 1940 novel ""The Last Man"" (US title: ""No Other Man""), a death ray developed by a German scientist named Mardok is unleashed in a global war and almost wipes out the human race. Similar weapons are found in George Lucas' science fiction saga ""Star Wars"". Death ray The death ray or death beam"
"– 270 BC), and by the Roman Epicurean poet Lucretius ( 99 – 55 BC). During the Early Middle Ages, atomism was mostly forgotten in western Europe, but survived among some groups of Islamic philosophers. During the twelfth century, atomism became known again in western Europe through references to it in the newly-rediscovered writings of Aristotle. In the fourteenth century, the rediscovery of major works describing atomist teachings, including Lucretius's ""De rerum natura"" and Diogenes Laërtius's ""Lives and Opinions of Eminent Philosophers"", led to increased scholarly attention on the subject. Nonetheless, because atomism was associated with the philosophy of Epicureanism,"
"independently by two museum curators after they were given victims' descriptions of one of the several electrical devices used by Burge. American clairvoyant Edgar Cayce advocated use of the violet ray in almost 900 of his ""readings"". Violet ray A violet ray is an antique medical appliance used during the early 20th century in the obsolete medical therapy called electrotherapy. Their construction usually feature a combination of a disruptive discharge coil with an interrupter to apply a high voltage, high frequency, and low current to the human body for therapeutic purposes. Their basic construction was invented prior to 1900 by"
"The Garin Death Ray The Garin Death Ray also known as The Death Box and The Hyperboloid of Engineer Garin () is a science fiction novel by the noted Russian author Aleksey Nikolayevich Tolstoy written in 1926–1927. Vladimir Nabokov considered it Tolstoy's finest fictional work. The ""hyperboloid"" in its title is not a geometrical surface (though it is utilized in the device design) but a ""death ray""-laser-like device (thought up by the author many decades before lasers were invented) that the protagonist, engineer Garin, used to fight his enemies and try to become a world dictator. The idea of a"
"this combination of vague ancient reports and modern guesswork has sometimes evolved into a much more emphatic and colourful tale. Some writers have Hippasus making his discovery while on board a ship, as a result of which his Pythagorean shipmates toss him overboard; while one writer even has Pythagoras himself ""to his eternal shame"" sentencing Hippasus to death by drowning, for showing ""that is an irrational number."" Hippasus Hippasus of Metapontum (; , ""Híppasos""; fl. 5th century BC), was a Pythagorean philosopher. Little is known about his life or his beliefs, but he is sometimes credited with the discovery of"
"Hero of Alexandria Hero of Alexandria (; , ""Heron ho Alexandreus""; also known as Heron of Alexandria ; c. 10 AD – c. 70 AD) was a mathematician and engineer who was active in his native city of Alexandria, Roman Egypt. He is considered the greatest experimenter of antiquity and his work is representative of the Hellenistic scientific tradition. Hero published a well recognized description of a steam-powered device called an ""aeolipile"" (sometimes called a ""Hero engine""). Among his most famous inventions was a windwheel, constituting the earliest instance of wind harnessing on land. He is said to have been"
"to have been put to death by Ptolemy II Philadelphus, around 264 BC, for plotting against his life. Amentes Amentes () was an ancient Greek surgeon, mentioned by Galen as the inventor of some ingenious bandages. Some fragments of the works of a surgeon named Amynias (of which name Amentes is very possibly a corruption) still exist in the manuscript ""Collection of Surgical Writers"" by Nicetas, and one extract is preserved by Oribasius in the fourth volume of Angelo Mai's collection ""Classici Auctores e Vaticanis Codicibus"". His date is unknown, except that he must have lived in or before the"
"Living Dead"" as well as ""Perpetual Sunshine"". The expensive product was claimed to cure impotence, among other ills. Eben Byers, a wealthy American socialite, athlete, industrialist and Yale College graduate, died from Radithor radium poisoning in 1932. Byers was buried in a lead-lined coffin; when exhumed in 1965 for study, his remains were still highly radioactive. Byers's death led to the strengthening of the Food and Drug Administration's powers and the demise of most radiation-based patent medicines. A ""Wall Street Journal"" article (1 Aug. 1990) describing the Byers incident was titled ""The Radium Water Worked Fine Until His Jaw Came"
"Archimedes Archimedes of Syracuse (; ; ) was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Generally considered the greatest mathematician of antiquity and one of the greatest of all time, Archimedes anticipated modern calculus and analysis by applying concepts of infinitesimals and the method of exhaustion to derive and rigorously prove a range of geometrical theorems, including the area of a circle, the surface area and volume of a sphere, and the area under a parabola. Other mathematical achievements"
"Medicine in Bethesda, Maryland. In 2018, the University of Basel discovered that a mysterious Greek papyrus with mirror writing on both sides, which was at the collection of Basilius Amerbach, a professor of jurisprudence at the University of Basel in the 16th century, is an unknown medical document of Galen or an unknown commentary on his work. The medical text describes the phenomenon of ‘hysterical apnea’. Galen Aelius Galenus or Claudius Galenus (; September 129 AD – /), often Anglicized as Galen and better known as Galen of Pergamon (), was a Greek physician, surgeon and philosopher in the Roman"
"the water used by Rome and many other cities was very hard, and coated the inner surfaces of the pipes, so lead poisoning was unlikely. Vitruvius related the famous story about Archimedes and his detection of adulterated gold in a royal crown. When Archimedes realized the volume of the crown could be measured exactly by the displacement created in a bath of water, he ran into the street with the cry of """"Eureka!"""", and the discovery enabled him to compare the density of the crown with pure gold. He showed the crown had been alloyed with silver, and the king"
"Asclepiades of Bithynia Asclepiades (; c. 124 or 129 – 40 BC), sometimes called Asclepiades of Bithynia or Asclepiades of Prusa, was a Greek physician born at Prusias-on-Sea in Bithynia in Asia Minor and who flourished at Rome, where he established Greek medicine near the end of the 2nd century BC. He attempted to build a new theory of disease, based on the flow of atoms through pores in the body. His treatments sought to restore harmony through the use of diet, exercise, and bathing. Asclepiades was born in Prusias-on-Sea in Bithynia. He travelled much when young, and seems at"
"Germany. (Germany) was named after him. The is named after him. Walter H. Schottky Walter Hans Schottky (23 July 1886 – 4 March 1976) was a German physicist who played a major early role in developing the theory of electron and ion emission phenomena, invented the screen-grid vacuum tube in 1915 while working at Siemens, co-invented the ribbon microphone and ribbon loudspeaker along with Dr. Erwin Gerlach in 1924 and later made many significant contributions in the areas of semiconductor devices, technical physics and technology. Schottky's father was mathematician Friedrich Hermann Schottky (1851–1935). Schottky had one sister and one brother."
"all later lighthouses in the world. The light was produced by a furnace at the top, and the tower was said to have been built mostly with solid blocks of limestone. Strabo reported that Sostratus had a dedication inscribed in metal letters to the ""Saviour Gods"". Later Pliny the Elder wrote that Sostratus was the architect, which is disputed. In the second century AD the satirist Lucian wrote that Sostratus inscribed his name under plaster bearing the name of Ptolemy. This was so that when the plaster with Ptolemy's name fell off, Sostratus's name would be visible in the stone."
"Georges Claude Georges Claude (24 September 187023 May 1960) was a French engineer and inventor. He is noted for his early work on the industrial liquefaction of air, for the invention and commercialization of neon lighting, and for a large experiment on generating energy by pumping cold seawater up from the depths. He has been considered by some to be ""the Edison of France"". Claude was an active collaborator with the German occupiers of France during the Second World War, for which he was imprisoned in 1945 and stripped of his honors. Georges Claude studied at the École supérieure de"
"reasonable to modern architectural historians. The complex and difficult design of the column's capital often required drilling to undercut the leaf edges. In the cella of the Erechtheion hung an ingenious golden lamp called ""asbestos lychnis"" invented by Callimachus, according to Pausanias' ""Description of Greece"": it needed to be refilled with oil only once a year as the asbestos wick didn't burned. Above it hung a bronze palm branch which trapped any rising smoke. An inscription from Aigai of the late 5th century BC may be attributed to some work of Callimachus and the time when Archelaus invited artists to"