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Who said: “Genius is two percent inspiration, ninety-eight percent perspiration.”
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< 11 Feb | 13 Feb >
FEBRUARY 12 – BIRTHS – Scientists born on February 12th
  Fang Lizhi
baby icon  Born 12 Feb 1936.
Chinese astrophysicist and dissident who graduated from university in 1956, and was soon expelled from Communist Party for expressing his beliefs in intellectual freedom and reforms. In 1972, he published a paper on the Big Bang theory, previously a forbidden topic in China, which met condemnation from the Communists; the Marxists claimed that the universe was infinite. As a human rights activist in China, he is often compared to Soviet dissident Andrei Sakharov. Lizhi was blamed for student unrest and resulting rebellion in Tiananmen Square (1987). Since 1990, Lizhi has lived in exile in England and the U.S. He does theoretical work in cosmology, extracting the history of the universe from the remaining physical evidence, such as the cosmic background radiation, and the existence of antimatter.«
  Julian Seymour Schwinger
baby icon  Born 12 Feb 1918; died 16 Jul 1994 at age 76.  quotes button quotes
American physicist who shared (with Richard Feynman and Shin-Itiro Tomonaga) the 1965 Nobel Prize in Physics for work in quantum electrodynamics which reconciled quantum mechanics with Albert Einstein's special theory of relativity. He published his first physics paper at age 16, and received a Ph.D. by age 21. During WW II, he developed important methods in electromagnetic field theory, which advanced the theory of wave guides. His variational techniques were applied in several fields of mathematical physics. In the 1940s he was one of the inventors of the “renormalization” technique. In 1957, he theorized that there were different neutrinos: one associated with the electron and one with the muon (verified experimentally 1962.) He invented and developed source theory.« A third family of neutrinos associated with the tau meson is now known (per email from David L. Wilson 17 Jul 2012).
  Marcel Gilles Jozef Minnaert
baby icon  Born 12 Feb 1893; died 26 Oct 1970 at age 77.
Flemish astronomer and solar physicist who was one of the pioneering solar researchers during the first half of the 20th century. Applying solar spectrophotometry, he was one of the first to make quantitative measurements of the intensity distribution inside Fraunhofer lines, and interpret from them information about the outer solar layers. His range of study also included comets, nebulae and lunar photometry. During the time he was director of the observatory at the University of Utrecht, (1937-1963) he created a modern astronomical institute to study solar and stellar spectra with resources including a solar telescope, spectrograph, photometer, and mechanical workshop. Minnaert also maintained a strong interest in the education of physics teachers, and as a univeristy professor gave clear, enthusiastic and well-prepared lectures.«.
book icon The Nature of Light and Color in the Open Air, by Marcel Minnaert. - book suggestion.
  Barnum Brown
baby icon  Born 12 Feb 1873; died 1963 .
American paleontologist who discovered the first Tyrannosaurus rex fossil (1902) and many other types of dinosaurs. His 66-year career in palaeontology began at the American Museum of Natural History (1897). Sinclair Oil Company sponsored some of his digs (1930-40) and used the dinosaur as their company logo at their petrol stations. He did his fieldwork dressed in a full length fur coat, tie and topcoat. By the end of his life, he had excavated more dinosaurs than any other person. *
book icon Bones for Barnum Brown: Adventures of a Dinosaur Hunter, by Roland T. Bird. - book suggestion.
booklist icon Booklist for Barnum Brown.
  Ιmile Meyerson
baby icon  Born 12 Feb 1859; died 4 Dec 1933 at age 74.
Polish-French chemist and philosopher who studied scientific theories, both old and new, to determine the nature of scientific thought. He identified two principles of psychological reasoning by which the scientist understands phenomena: realism and causalism. Applying the first principle, a scientist's mind expects that within diverse physical behaviours, a certain degree of regularity is held to - a lawfulness - such as established by laws of conservation of energy, or the law of inertia. The second principle describes how the scientist seeks to describe a change by the identification of antecedent and consequent of the change. Meyerson's ideas were popular among scientific theorists in the 1930s.«
book icon Identity and Reality, by Emile Meyerson. - book suggestion.
  William Morris Davis
baby icon  Born 12 Feb 1850; died 5 Feb 1934 at age 83.  quotes button quotes
American geomorphologist and geologist who developed, geomorphology as the scientific study of landforms. He is noted for his concept of the “cycle of erosion” (or geomorphic cycle) whereby mountains and other landforms have a pattern of creation, maturation and becoming old. Mountains are formed by uplift and have steep, irregular forms. With time, valleys are carved by streams, which widen, and erosion eventually produces gentler, rolling hills. Though this scheme is not accurate by today's understanding, Davis initiated new ideas to interpret the evolution of landforms. His essay The Rivers of Pennsylvania (1889) first gave a broad statement of his concepts.«
book icon Elementary Physical Geography, by William Morris Davis. - book suggestion.
  Edward Forbes
baby icon  Born 12 Feb 1815; died 18 Nov 1854 at age 39.  quotes button quotes
British naturalist, pioneer in the field of biogeography, who analyzed the distribution of plant and animal life of the British Isles as related to certain geological changes. Forbes is considered by many to be the founder of the science of oceanography and marine biology, especially mollusks and starfishes. He participated in dredgings and expeditions in the Irish Sea (1834), France, Switzerland, Germany, Algeria (1836), Austria (1838), and the Mediterranean (1841-42). During this period, he pursued the study of life in the littoral zones (the ocean from the shore to the continental shelf) and developed an interest in the geographical distribution of animals. His study of the fauna of the Aegean Sea stimulated interest in marine biology. Unfortunately, he is best known for his “azoic theory” (1843), which stated that marine life did not exist on sea beds at depths over 300 fathoms (1800 feet). This was soon to be disproved, (but the desire to test this hypothesis has led to further exploration until, eventually, no depth has been completely unstudied). He became paleontologist to British Geological Survey in 1844.
  James Dwight Dana
baby icon  Born 12 Feb 1813; died 14 Apr 1895 at age 82.  quotes button quotes
American geologist, mineralogist, and naturalist who, in explorations of the South Pacific, the U.S. Northwest, Europe, and elsewhere, made important studies of mountain building, volcanic activity, sea life, and the origin and structure of continents and ocean basins. His contributions to classification systems are still in use today by scientists in these fields of study. He supported a "principle of cephalization" (1864) to order biological diversity, with "cephalized" forms on top. He was one of the American scientists that corresponded with Darwin, and supported Darwin's ideas on the development of coral reefs. He wrote on biological topics, such as the crustacea and fossils in the Wilkes Expedition collections made from Australian coal deposits.
book icon Life of James Dwight Dana, by Daniel Gilman. - book suggestion.
  Charles Darwin
baby icon  Born 12 Feb 1809; died 19 Apr 1882 at age 73.  quotes button quotes
Charles Robert Darwin was an English naturalist who presented facts to support his theory of the mode of evolution whereby favourable variations would survive which he called “Natural Selection” or “Survival of the Fittest,” and has become known as Darwinism. His two most important books were On the Origin of Species by Means of Natural Selection (1859) and The Descent of Man, and Selection in Relation to Sex
book icon From So Simple a Beginning: Darwin's Four Great Books, by Charles Darwin, Edward O. Wilson. - book suggestion.
booklist icon Booklist for Charles Darwin.
  Peter Cooper
baby icon  Born 12 Feb 1791; died 4 Apr 1883 at age 92.  quotes button quotes
American inventor, manufacturer and philanthropist who established The Cooper Union for the Advancement of Science and Art in New York (cornerstone laid in 1854) to provide free technical education of the working class. He invented the first American-built steam locomotive for a common-carrier railway, the Tom Thumb, which made its first run on 28 Aug 1830. His iron-rolling mill produced iron structural beams, included those used to build the Cooper Union, which he wanted to be fire-proof. After founding a telegraph company (1854), he joined Cyrus Field's effort to lay the first tranatlantic cable (1857). Cooper lived to the age of 92, and for his life of philanthropy in New York, the city mourned his passing as one of its most-loved.citizens.«  read more button more
book icon Peter Cooper, by Rossiter W. Raymond. - book suggestion.
booklist icon Booklist for steam locomotive history.
  Pierre-Louis Dulong
baby icon  Born 12 Feb 1785; died 18 Jul 1838 at age 53.
French chemist and physicist who helped formulate the Dulong-Petit law of specific heats (1819), which proved useful in determining atomic weights. He began in a medical career, but turned to botany and then chemistry. In 1811, he discovered nitrogen trichloride, losing a finger and the sight of one eye when it spontaneously exploded. Jointly with Alexis Petit (1815-20), they measured the specific heat of elements and related them to atomic weights. They discovered their new law that specific heat times atomic weight of an element is a constant, about six calories per gram atom, the same for all solid elements.«
  George Hadley
baby icon  Born 12 Feb 1685; died 28 Jun 1768 at age 83.
English physicist and meteorologist who first formulated an accurate theory describing the trade winds and the associated meridional circulation pattern now known as the Hadley cell.
  Jan Swammerdam
baby icon  Born 12 Feb 1637; died 15 Feb 1680 at age 43.  quotes button quotes
Dutch naturalist, known for his skilled biological microscopical observations and accurate illustrations, who was the first to describe the red blood cells (1658). He studied and illustrated the life histories and anatomy of many species of insects, which he classified on the basis of development. He demonstrated the presence of butterfly wings in caterpillars about to undergo pupation. To facilitate the study of human anatomy, he developed better methods for injecting wax and dyes into cadavers. He was one of the first to dissect under water and to remove fat by organic solvents. He demonstrated experimentally that whereas muscles alter in shape during contraction, their volume is not thereby increased, which contradicted beliefs of the time. «
  Caspar Bartholin
baby icon  Born 12 Feb 1585; died 13 Jul 1629 at age 44.
Caspar Berthelsen Bartholin was a Danish physician and theologian (Latin Bartholinus) who wrote one of the most widely read Renaissance manuals of anatomy. He was first to describe the olfactory nerve (associated with the sense of smell) as the first cranial nerve. In 1619, while Professor of medicine at the University of Copenhagen, along with others of the medical faculty, he published A Short Instruction on how one should care for oneself during the plague. Bartholin glands were first described by Caspar Bartholin, a Dutch anatomist, in 1677. They are paired glands present in female mammals. He died at age 44. Image: Olefactory nerve shown in green.


Nature bears long with those who wrong her. She is patient under abuse. But when abuse has gone too far, when the time of reckoning finally comes, she is equally slow to be appeased and to turn away her wrath. (1882) -- Nathaniel Egleston, who was writing then about deforestation, but speaks equally well about the danger of climate change today.
Carl Sagan Thumbnail Carl Sagan: In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) ...(more by Sagan)

Albert Einstein: I used to wonder how it comes about that the electron is negative. Negative-positive—these are perfectly symmetric in physics. There is no reason whatever to prefer one to the other. Then why is the electron negative? I thought about this for a long time and at last all I could think was “It won the fight!” ...(more by Einstein)

Richard Feynman: It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the facts ... if the facts are right, then the proofs are a matter of playing around with the algebra correctly. ...(more by Feynman)
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< 11 Feb | 13 Feb >
FEBRUARY 12 – DEATHS – Scientists died on February 12th
  John Hays Hammond Jr.
gravestone icon  Died 12 Feb 1965 at age 76 (born 13 Apr 1888).
U.S. inventor whose development of radio remote control served as the basis for modern missile guidance systems. Son of the noted U.S. mining engineer John Hays Hammond, he established the Hammond Radio Research Laboratory in 1911. By 1914, he had laid the foundations for all subsequent radio control, able to send an unmanned yacht on a successful 120-mile trip from Gloucester to Boston and back. With WW I just begun, Hammond added an anti-interference feature to prevent jamming. He also invented a target-seeking system that allowed a remote-controlled ship to home in on an enemy ship's searchlights; and he began work on the first radio-guided torpedo. By 1916, he had earned over 100 patents.
  Kotaro Honda
gravestone icon  Died 12 Feb 1954 (born Feb 1870).
Japanese metallurgist whose studies of the metallurgy or iron and steel led to the invention of powerful magnetic steels including KS Magnetic Steel (1917) and New KS Magnetic Steel (1933) containing iron, aluminum, nickel, cobalt, copper and titanium.. (KS stands for Kichizaemon Sumitomo, who provided financial support for the research.) Honda investigated magnetic substances, and following research (1926-35) on the magnetization of single crystals of iron, cobalt and nickel, he discovered how to make anisotropic magnets. These have their magnetic domains locked in one particular direction during manufacture, resulting in being able to be magnetised only along this axis. Because all their magnetic domains are aligned in the same direction, anisotropic magnets are much stronger than isotropic magnets.«
  Dirk Coster
gravestone icon  Died 12 Feb 1950 at age 60 (born 5 Oct 1889).
Dutch physicist who (working with Georg von Hevesy) discovered the element hafnium by skillfully applying Moseley's method of X-ray analysis to distinguish the spectral lines of hafnium, despite the distraction of some extraneous lines. Niels Bohr had suggested they look closely at an ore of zirconium, a homologue, for the new element. Bohr heard by telephone of their success on the day of his Nobel Prize lecture (11 Dec 1922), in which he then announced their discovery. The element, at. no.72, was named for Hafnia, the old Roman name for Copenhagen. Earlier, working at Bohr's laboratory in Copenhagen, Coster had used X-rays to provide experimental data to support Bohr's theory of atomic structure and the periodic table. He died from a spinal disease which progressively totally paralysed him.«
  Moses Gomberg
gravestone icon  Died 12 Feb 1947 at age 81 (born 8 Feb 1866).
Russian-born American chemist who initiated the study of free radicals in chemistry when in 1900 he prepared the first authentic one, triphenylmethyl. Organic free radicals are essential to body functioning as well as being implicated in aging and diseases. Also, they play a major role in the production of plastics and other widely used synthetic materials. Organic free radicals contain a form of carbon with an unpaired electron which allows the radical to react readily with another molecule. Until Gomberg synthesized triphenylmethyl, free radicals containing carbon had been thought not to exist. Gomberg's discovery led to modern theories of the structure and reactivity of organic molecules, and led to the development of an entire field of research.
  Kurt Lewin
gravestone icon  Died 12 Feb 1947 at age 56 (born 9 Sep 1890).  quotes button quotes
German-American psychologist who originated the field theory of behaviour. He was among the first to apply laboratory techniques to everyday behavior. He would always formulate a problem in terms of a theory to be tested in experiments. His approach was to study the forces leading to action. Thus he described behaviour as the outcome of positive and negative forces affecting the individual at a given moment. This needed consideration of two kinds of factors, those of the person and those of his psychological environment. Thus his field theory is an approach to the study of human behavior, rather than a theory which has content which can be used for explanatory, predictive, or control purposes.«
book icon The Complete Social Scientist: A Kurt Lewin Reader, by Kurt Lewin and Martin Gold. - book suggestion.
  Soren Peter Lauritz Sorensen
gravestone icon  Died 12 Feb 1939 at age 71 (born 9 Jan 1868).
Danish chemist.
  Sir John Arthur Thomson
gravestone icon  Died 12 Feb 1933 at age 71 (born 8 Jul 1861).  quotes button quotes
Scottish naturalist who was a professor of natural history at the University of Aberdeen (1899-1930), and became an expert in the soft corals (Alcyonacea), stinging anemones and jellyfish found in the Scottish marine habitats, as well as a general interest in chemistry and the region's animals, plants and geology. He was also active in reconciling religion with science through popular books and lectures. He travelled widely, including the United States with his public presentations. One of the books he editted, Outline of Science (1922), became a best-seller, with more than 100,000 sold in five years. He was knighted in 1930.«
  Richard Dedekind
gravestone icon  Died 12 Feb 1916 at age 84 (born 6 Oct 1831).  quotes button quotes
(Julius Wilhelm) Richard Dedekind was a German mathematician who developed a major redefinition of irrational numbers in terms of arithmetic concepts. Although not fully recognized in his lifetime, his treatment of the ideas of the infinite and of what constitutes a real number continues to influence modern mathematics.
book icon Essays on the Theory of Numbers, by Richard Dedekind, Wooster W. Beman (trans.). - book suggestion.
  William C. Redfield
Thumbnail - William C. Redfield
(NASA)
gravestone icon  Died 12 Feb 1857 at age 67 (born 26 Mar 1789).
American meteorologist who observed the whirlwind character of tropical storms. Following a hurricane that struck New England on 3 Sep 1821, he noted that in central Connecticut trees had toppled toward the northwest, but in the opposite direction 80-km further west. He found that hurricanes are generated in a belt between the Equator and the tropics, then veer eastward when meeting westerly winds at about latitude 30ºN. In 1831, he published his evidence that storm winds whirl counterclockwise about a centre that moves in the normal direction of the prevailing winds. He also promoted railroads and steamships. He co-founded the American Association for the Advancement of Sciences and was president at its first meeting (Sep 1848).
  Sir Astley Paston Cooper
gravestone icon  Died 12 Feb 1841 at age 72 (born 23 Aug 1768).  quotes button quotes
(1st Baronet) English surgeon who was a pioneer in experimental surgery. He was the first to tie the abdominal aorta in treating an aneurysm (1817), among various other operations he performed successfully at a time before antiseptic procedures. He was devoted to the study and teaching of anatomy, and is said to have dissected daily throughout his career. In 1820, for removing a small tumour from the head of King George IV, he was rewarded with a baronetcy, and later appointed Sergeant-Surgeon to the King (1828). He wrote many medical books, including his major work The Anatomy and Surgical Treatment of Hernia (1804-07), and Dislocations and Fractures (1822). He became president of the Royal College of Surgeons in 1827, and vice-president of the Royal Society in 1830.«
  Immanuel Kant
gravestone icon  Died 12 Feb 1804 at age 79 (born 22 Apr 1724).  quotes button quotes
German philosopher, trained as a mathematician and physicist, who published his General History of Nature and theory of the Heavens in 1755. This physical view of the universe contained three anticipations of importance to astronomers. 1) He made the nebula hypothesis ahead of Laplace. 2) He described the Milky Way as a lens-shaped collection of stars that represented only one of many "island universes," later shown by Herschel. 3) He suggested that friction from tides slowed the rotation of the earth, which was confirmed a century later. In 1770 he became a professor of mathematics, but turned to metaphysics and logic in 1797, the field in which he is best known.

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< 11 Feb | 13 Feb >
FEBRUARY 12 – EVENTS – Science events on February 12th
  Metric road signs
calendar icon   In 1973, four metric distance road signs, the first in the U.S., were erected along Interstate 71 in Ohio. They showed the distance in both miles and kilometers between Columbus and Cincinnati, and Columbus and Cleveland. As early as 1790, Thomas Jefferson proposed a decimal measurement system, similar to the metric system. In 1968 a study was ordered by Congress. By 1971, a report recommended a switch to the metric system and established a 10-year target time to accomplish it. This led to a National Metric Conference in 1973, which prompted Ohio to display metric highway signs. The Metric Conversion Act (1975) planned a voluntary conversion to the metric system, which produced little voluntary action.
  Borazon
calendar icon   In 1957, the General Electric Company (U.S.) announced that Borazon, a material hard enough to scratch diamonds, had been made. Dr. Robert H. Wentorf, a research scientist at had succeeded in synthesizing cubic boron nitride (CBN) given the trade name Borazon. It remains hard at temperatures at which diamond burns readily (about 1600 ºF), whereas Borazon can withstand temperatures of more than 3500 ºF. The hardness of diamond and borazon is approximately equal, each able to scratch the other. In actual lapping tests, Borazon powder has polished the surface of a large diamond at the same rate as the surface was polished by diamond powder. It is now used for abrasive tools for such industries as metalworking, stone, and mining.
  Black American patent
calendar icon   In 1957, the prolific black American inventor, F.M. Jones was issued a U.S. patent for a "Method of Preserving Perishables."
book icon The Inventive Spirit of African Americans: Patented Ingenuity, by Patricia Carter Sluby. - book suggestion.
  First penicillin test
calendar icon   In 1941, the first injection of penicillin into a human test subject was conducted by Ernst Chain and Howard Walter Florey, who developed this antibiotic. The patient, Albert Alexander, 43, an Oxford policeman had scratched his face on a rose bush. When the scratches turned septic, there followed blood poisoning and numerous abscesses. Because he was “in great pain, desperately and pathetically ill,” he was happy to be treated with the new drug. According to the attending doctor, the result was that “within four days, there was a striking improvement... he was vastly better... with obvious resolution of the abscesses.” Due to limited available penicillin, treatment stopped, the infection returned, and he died four weeks later.
  Electrostatic generator patent
Thumbnail - Electrostatic generator patent
(USPTO)
calendar icon   In 1935, a patent was issued to Robert Jemison Van de Graaff for his Electrostatic Generator design (U.S. No. 1,991,236), able to generate direct-current voltages much higher than the 700,000-V which was the state of the art at the time using other methods. It consisted of two large, hollow approximately spherical metal domes on insulated columns. A silk belt ran on rollers between the base of the column to the interior of the dome. Charges from a 5000-V source are transferred to the belt near the lower roller, carried upward and are collected by a metal comb connected to the dome interior. By nature, rather than accumulating on the interior, the charges move to the exterior of the dome. Two such domes with opposite charges could generate a potential difference of 1,500,000-V between them.  read more button more
  Bridge patent
calendar icon   In 1935, a U.S. patent for a bridge with open-mesh steel flooring was issued to Walter E. Irving of the Irving Subway Grating Co. (No. 1,991,154). His bridge deck design was non-skid, self-cleaning, self-draining and remained free from snow accumulation. Being relatively light in weight and offering little resistance to wind pressure made it suitable for a bridge of the bascule (drawbridge) or vertical lift type, and resulted in a saving of power needed to operate the opening of the bridge. The first bridge in the U.S. to use such open-mesh steel flooring was the University Bridge in Seattle, Washington, which was rebuilt and re-opened on 7 Apr 1933. A previous patent for a design of continuous metal grating (No. 1,629,134) was issued on 17 May 1917, and assigned to Irving Iron Works Co.«
  Packard patent
calendar icon   In 1900, James W. Packard received his first automotive patent, a year after forming his company with partner George Weiss. Packard became interested in building cars after purchasing a Winton horseless carriage. The Winton proved unreliable and after nearly a year of fixing up his horseless carriage, Packard decided he would manufacture his own automobile. Among Packard's necessary automotive innovations were the “H” gear-slot pattern and the gas pedal.
book icon Packard Motor Car Company, by Evan P. Idle. - book suggestion.
booklist icon Booklist for Packard automobile history.
  First GB car crash fatality
calendar icon   In 1898, the first car crash resulting in a fatality happened to Henry Lindfield whose electric car's steering gear failed, and he crashed at the bottom of a hill at Purley Corner, Surrey. He was a Brighton business agent for International Cars, on his way to London. The car eventually turned completely round, ran through a wire fence and hit an iron post. The main artery in his leg was cut. Surgeons at Croydon hospital amputated the limb, but he died of shock from the operation the following day. A verdict of accidental death was returned. His passenger, 18 or 19 year-old son Bernard, was thrown clear of the vehicle and escaped almost unhurt. The first pedestrian fatally struck by a car died on 17 Aug 1896. The first petrol-fuelled fatal car crash happened on 25 Feb1899.«
  Edison patents
calendar icon   In 1895, Thomas A. Edison was issued several U.S. patents: "Filament for Incandescent Lamps," "Induction Converter" and an "Incandescent Electric Lamp."
  Edison patents
calendar icon   In 1889, Thomas A. Edison was issued two U.S. patents: "Method of Winding Field Magnets," and a "Phonograph."
  Edison patents
calendar icon   In 1884, Thomas A. Edison was issued several U.S. patents: "An Electric Generator or Motor," "Insulation of Railroad tracks Used for Electrical Circuits," "Incandescent Electric Lamp," and an "Electrical Meter."
  Baseball catcher's mask
calendar icon   In 1878, Frederick W. Thayer, the captain of the Harvard University Baseball Club, patented the now familiar, baseball catcher's mask.
  Telephone demonstration
calendar icon   In 1877, a news dispatch was sent using Alexander Graham Bell's new invention, the telephone, for the first time in the U.S. It was sent from Salem, Mass. to the Boston Globe in Boston, Mass., a distance of sixteen miles.
  Black American patent
calendar icon   In 1867, black American inventor, H. Lee, was issued a U.S. patent for an "Animal Trap."
book icon Great Discoveries and Inventions by African-Americans, by David M. Foy. - book suggestion.

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- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Euclid
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Bible
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
Avicenna
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
Archimedes
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton