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Search Encyclopedia's Encyclopedia of Chemistry provides articles for 64,557 entries from chemistry, pharmaceutics and material sciences as well as related scientific disciplines.


Speed of light

Speed of light :"Lightspeed" redirects here. For other uses, see Lightspeed (disambiguation) . :For other uses of "speed of light", see speed of light (disambiguation) The speed of light in a vacuum is an important physical constant denoted by the letter c for constant or the Latin word celerit more

Rudolf Vrba

Rudolf Vrba Rudolf 'Rudi' Vrba, born Walter Rosenberg (September 11 , 1924 – March 27 , 2006 ), was a professor of pharmacology at the University of British Columbia . He came to public attention in 1944 when, in April that year, he and a friend, Alfréd Wetzler , became the second and third more


DNA Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The main role of DNA molecule s is the long-term storage of information . DNA is often compared to a set of blueprints, since it cont more

Verbascum thapsus

Verbascum thapsus Verbascum thapsus (; Great Mullein or Common Mullein) is a species of mullein native to Europe , northern Africa and Asia , and introduced in the Americas and Australia . It is a hairy biennial plant that can grow to 2 m or more tall. Its small yellow flowers are dens more

Chemical warfare

Chemical warfare Chemical warfare involves using the toxic properties of chemical substance s to kill, injure or incapacitate an enemy . Chemical warfare is different from the use of conventional weapon s or nuclear weapon s because the destructive effects of chemical weapons are not primarily du more

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