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Democritus was born 460 BC, in Abdera, Greece. He claims the atom to be the simplest unit of matter. Aristotle was born 384 BC in Stagira, Greece. He declares the existence of only four elements: fire, air, water and earth.
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Born September 6, 1766, in Eaglesfield, Cumbria, United Kingdom.
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Born February 8, 1834, in Tobolsk, Russia
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Born December 18, 1856, in Manchester, United Kingdom
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Born August 30, 1871, in Brightwater, New Zealand
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Born October 7, 1885, in Copenhagen, Denmark.
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First produced by Heinrich Hertz, using electrical circuits calculated to produce oscillations in the radio frequency range.
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Born JOctober 20, 1891, in Bollington, United Kingdom
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X-rays, a form of radiation were discovered by Wilhelm Conrad Rontgens
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Henri Becquerel used naturally fluorescent minerals to study the properties of x-rays, he discovered radioactivity.
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J.J. Thomson discovered the electron a negatively charged particle.
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An alpha particle has a helium nucleus
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Gamma Rays are forms of radiation in shorter wave lengths
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Born August 8, 1902, in Bristol, United Kingdom
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Paul Ehrlich developed drugs to treat infectious diseases. He coined the term and defined it as the use of chemicals to treat disease.
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Rutherford discovered the proton a positively charged particle.
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Uses electormagnetic fields to propel charged particles to high speeds and to contain them in well- defined beams.
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An Antielectron is a positively charged electron
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Fusion is two hydrogens fusing to become a helium
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A neutron is a particle that carries no charge
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Was brought about by nuclear reactions mediated by neutrons, by Hungarian scientist Leó Szilárd
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A muon is an unstable subatomic particle
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Fission is splitting of something into parts
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The Manhattan Project was a research and development project that produced the first atomic bombs during World War II. Active till 1946.
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Enrico Fermi created the first controlled chain reaction.
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The codename for the type of atomic bomb dropped on Hiroshima on August 6, 1945.
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The codename for the type of atomic bomb that was detonated over Nagasaki, Japan.
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A kaon is a meson having a mass several times of a pion.
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A pion is a meson having a mass 270 times that of an electron
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Quarks a number of subatomic particles
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The first time a human scan (MRI) was used, administered by Sir Peter Mansfield’s team of doctors.
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A declaration that nuclear explosive devices posed a perilous threat to the security interests of the USA and continued international progress towards world peace and the development of nations.
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A partial nuclear meltdown which occurred at Three Mile Island in Dauphin County, Pennsylvania, USA.
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A catastrophic nuclear accident that occurred at the Chernobyl Nuclear Power Plant.
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A catastrophic failure at the Fukushima Nuclear Power Plant, Japan.
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Higgs Boson is a particle that gives mass to certain elementary particles.
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The first subatomic particle to be discovered was the electron, identified in 1897 by J. J. Thomson. Other particles include proton (1911), neurton (1932).