1950 (MCML) was a common year starting on Sunday (link will take you to calendar). 1950 - Events. January 5 - U.S. Senator Estes Kefauver introduces a resolution calling for examination of organized crime in the U.S. January 6 - The United Kingdom recognizes the People's Republic of China. The Republic of China severs diplomatic relations with Britain in response. January 9 - The Israeli government recognizes the People's Republic of China. January 11 - Huk gu ...

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1950 - Events
1950 - February 1950 - March 1950 - April 1950 - May 1950 - June 1950 - July 1950 - August 1950 - September 1950 - October 1950 - November 1950 - December 1950 - Unknown date
1950 - Births
1950 - January 1950 - February 1950 - March 1950 - April 1950 - May 1950 - June 1950 - July 1950 - August 1950 - September 1950 - October 1950 - November 1950 - December
1950 - Unknown date 1950 - Deaths
1950 - January 1950 - February 1950 - March 1950 - April 1950 - May 1950 - July 1950 - August 1950 - September 1950 - October 1950 - November 1950 - December 1950 - Date unknown
1950 - Nobel Prizes 1950 - Fields Medalists

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1 E-25 kg - External link

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Dubnium (formerly also called Eka-Tantalum, Hahnium and Unnilpentium) is a chemical element in the periodic table that has the symbol Db and atomic number 105. This is a highly radioactive synthetic element whose most stable isotope has a half life of 16 hours (dubnium-268). This relatively high stability compared to the surrounding elements on the periodic table gives evidence that by manipulating the number of neutrons in a nucleus, ...

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Dubnium - History

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Curium is a synthetic element in the periodic table that has the symbol Cm and atomic number 96. A radioactive metallic transuranic element of the actinide series, curium is produced by bombarding plutonium with alpha particles (helium ions) and was named for Marie Curie and her husband Pierre. Curium - Notable characteristics. The isotope curium-248 has been synthesized only in milligram quantities, but curium-242 and curium-244 are made in multigram amounts, which allows for the determination of so ...

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Curium - Notable characteristics Curium - History Curium - Isotopes Curium - Nuclear fuel cycle

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Sealed source radiotherapy or brachytherapy or endocurietherapy is the application of radiation from close range and is used for techniques where the radioactive source is placed inside or next to the area requiring treatment. The Greek word "brachy" means close or nearby, and is the opposite of "tele" which means far or at a distance. Teletherapy has been used to refer to the use of gamma-emitting sources (usually Cobalt-60) positioned perhaps 0.8m from the target volume. Teletherapy can also refer ...

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To help compare orders of magnitude of different times this page lists times between 1010 seconds and 1011 seconds (320 years and 3200 years). See also times of other orders of magnitude. Shorter times 351 years -- half-life of californium-249 418 years -- half life of silver-108 432.2 years -- half life of americium-241 680 years -- half life of niobium-91 898 years -- half life of californium-251 1000 years -- one millennium = 3.16 x 1010 seconds* 1053 years -- duration of the ...

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To help compare orders of magnitude of different times this page lists times between 106 seconds (a megasecond) and 107 seconds (11.6 days and 116 days). See also times of other orders of magnitude Shorter times 1 million seconds = 11.6 days 14 days (~1.21x106 s) -- a fortnight 15.9735 days -- half life of vanadium-48 17.81 days -- half life of californium-253 27.3217 days -- sidereal month 27.7025 days -- half life of chr

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To help compare orders of magnitude of different times this page lists times between 116 days and 1157 days or 3.2 years (107 seconds and 108 seconds). Shorter times 10 megaseconds = 115.74 days 128.6 days — half life of thulium-170 138 days — half life of polonium- 210 224.701 days — one orbit of Venus 271.79 days — half life of cobalt-57 280 days — average length of a human pregnancy; ~24 million seconds 330 days — half life ...

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To help compare orders of magnitude of different times this page lists times between 3.2 years and 32 years (108 seconds and 109 seconds). See also times of other orders of magnitude. Shorter times 3.3 years -- half life of rhodium-101 4 years -- full term of the President of the United States 5.2714 years -- half life of cobalt-60 6 years -- full term of a Senator in the United States 7 years -- the interval between leap seconds on December 31, 199

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Supernovae refer to several types of stellar explosions that produce extremely bright objects made of plasma that decline to invisibility over weeks or months. There are two possible routes to this end. A massive star may cease to generate fusion energy from fusing the nuclei of atoms in its core and collapses inward under the force of its own gravity, or a white dwarf star may accumulate material from a companion star until it reaches its Chandrasekhar limit and undergoes a thermonuclear explosion. In either case, the resulting supernova explosion expels much ...

Including:

Supernova - Classification
Supernova - Spectral classification Supernova - Type Ia Supernova - Type Ib and Ic Supernova - Type II
Supernova - Supernova hunting Supernova - Naming of supernovae Supernova - Notable supernovae Supernova - Role of supernovae in stellar evolution Supernova - Possible threats to Earth

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As part of the attempt to understand supernova explosions, astronomers have classified them according to the lines of different chemical elements that appear in their spectra. The first element for division is the presence or absence of a line from hydrogen. If a supernova's spectrum contains a hydrogen line, it is classified Type II, otherwise it is Type I. Among those groups, there are subdivisions according to the presence of o ...

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Supernova, Supernova - Classification, Supernova - Spectral classification, Supernova - Type Ia, Supernova - Type Ib and Ic, Supernova - Type II, Supernova - Supernova hunting, Supernova - Naming of supernovae, Supernova - Notable supernovae, Supernova - Role of supernovae in stellar evolution, Supernova - Possible threats to Earth

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A supernova is a massive explosion of a star that occurs under two possible scenarios.The first is that a white dwarf star undergoes a nuclear based explosion after it reaches its Chandrasekhar limit from absorbing mass from a neighboring star. The second, and more common cause is when a massive star, usually a red giant, loses fuel for the fusion that powers it, it collapses, and combusts from the energy created from the collapse. Stellar nucleosynthesis Big Bang nucleosynthesis Supernova nucleosynthes ...

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Supernova nucleosynthesis, Supernova nucleosynthesis - Supernovae, Supernova nucleosynthesis - Elements fused, Supernova nucleosynthesis - The R-Process

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The Messier object M98, a magnitude 11.0 spiral galaxy in the constellation Coma Berenices. The New General Catalogue object NGC 98, a magnitude 12.7 spiral galaxy in the constellation Phoenix. ...

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98 number, 98 number - In mathematics, 98 number - In astronomy, 98 number - In other fields

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There's antimony, arsenic, aluminum, selenium, And hydrogen and oxygen and nitrogen and rhenium, And nickel, neodymium, neptunium, germanium, And iron, americium, ruthenium, uranium, Europium, zirconium, lutetium, vanadium, And lanthanum and osmium and astatine and radium, And gold and protactinium and indium and gallium, And iodine and thorium and thulium and thallium. There's yttrium, ytterbium, actinium, rubidium, And boron, gadolinium, niobium, iridium, And strontium and silicon and silver and samarium, And bismuth, bromine, l ...

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The Elements song, The Elements song - Lyrics, The Elements song - Periodic Table according to Lehrer

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93 neptunium Np 94 plutonium Pu 95 americium Am 96 curium Cm 97 berkelium Bk 98 californium Cf 99 einsteinium Es 100 fermium Fm 101 mendelevium Md 102 nobelium No 103 lawrencium Lr 104 rutherfordium Rf 105 dubnium Db 106 seaborgium Sg 107 bohrium Bh 108 hassium Hs 109 meitnerium Mt 110 darmstadtium Ds 111 roentgenium Rg 112 ununbium Uub* 113 ununtrium Uut* 114 u ...

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Transuranium element, Transuranium element - Discovery and naming of transuranium elements, Transuranium element - Now-obsolete claims of discovery, Transuranium element - List of the transuranic elements:, Transuranium element - Super Heavy Atoms

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The appearance of this element is unknown, however it is most likely silvery-white or gray and metallic. If sufficient amounts of lawrencium were produced, it would pose a radiation hazard. Very little is known about the chemical properties of this element but some preliminary work on a few atoms has indicated that it behaves similarly to the actinides. Element 103 is a d-block element analogous to lutetium and therefore is increasingly being placed with the other d-block elements in the transition metal chemical series, but it is still most o ...

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Lawrencium, Lawrencium - Notable characteristics, Lawrencium - History

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The isotope curium-248 has been synthesized only in milligram quantities, but curium-242 and curium-244 are made in multigram amounts, which allows for the determination of some of the element's properties. Curium-244 can be made in quantity by subjecting plutonium to neutron bombardment. Very small amounts of curium may exist in uranium ore as a daughter product of natural decay. There are few commercial applications for curium but it may one day be useful in radioisotope thermoelectric generators. Curium bio-accumulates in bone tissue where its radiation destroys b ...

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Curium, Curium - Notable characteristics, Curium - History, Curium - Isotopes, Curium - Nuclear fuel cycle

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Of Swedish ancestry, Seaborg was born in Ishpeming, Michigan, grew up in South Gate, California (a suburb next to Watts in Los Angeles), took his bachelors degree at the University of California, Los Angeles in 1934, where he joined Alpha Chi Sigma, and his doctorate at the University of California, Berkeley in 1937. He lived most of his retired life in Lafayette, California. He followed Frederick Soddy's work investigating isotopes, and d ...

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Glenn T. Seaborg, Glenn T. Seaborg - Early life, Glenn T. Seaborg - A graduate student, Glenn T. Seaborg - Career, Glenn T. Seaborg - Marriage, Glenn T. Seaborg - Quote, Glenn T. Seaborg - Seaborgium, Glenn T. Seaborg - Books

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1950 - January. January 5 - U.S. Senator Estes Kefauver introduces a resolution calling for examination of organized crime in the U.S. January 6 - The United Kingdom recognizes the People's Republic of China. The Republic of China severs diplomatic relations with Britain in response. January 9 - The Israeli government recognizes the People's Republic of China. January 11 - Huk guerrillas attack the town of Hermosa in Bataan, Philippines. January 12 - Huk guerillas attack ...

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1950, 1950 - Events, 1950 - January, 1950 - February, 1950 - March, 1950 - April, 1950 - May, 1950 - June, 1950 - July, 1950 - August, 1950 - September, 1950 - October, 1950 - November, 1950 - December, 1950 - Unknown date, 1950 - Births, 1950 - January, 1950 - February, 1950 - March, 1950 - April, 1950 - May, 1950 - June, 1950 - July, 1950 - August, 1950 - September, 1950 - October, 1950 - November, 1950 - December, 1950 - Unknown date, 1950 - Deaths, 1950 - January, 1950 - February, 1950 - March, 1950 - April, 1950 - May, 1950 - July, 1950 - August, 1950 - September, 1950 - October, 1950 - November, 1950 - December, 1950 - Date unknown, 1950 - Nobel Prizes, 1950 - Fields Medalists

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In 1939 he became an instructor in chemistry at UC Berkeley, was promoted to professor in 1945, and served as chancellor from 1958 to 1961. (In an amusing quirk, his last name is an anagram of the popular Berkeley cheer, "Go Bears!") He is credited for discovering and isolating plutonium, americium, curium, berkelium, and californium at Berkeley (the last four of which he codiscovered with Albert Ghiorso) and, with Edwin McMillan, shared the Nobel Prize in Chemistry in 1951 for the c ...

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Glenn T. Seaborg, Glenn T. Seaborg - Early life, Glenn T. Seaborg - A graduate student, Glenn T. Seaborg - Career, Glenn T. Seaborg - Marriage, Glenn T. Seaborg - Quote, Glenn T. Seaborg - Seaborgium, Glenn T. Seaborg - Books

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