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Physical cosmology
Physical cosmology, as a branch of astrophysics, is the study of the large-scale structure of the universe and is concerned with fundamental questions about its formation and evolution. Cosmology ... > more -
Periodic table
The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev. Mendeleev intended the table to ... > more -
Jet engine
A jet engine is any engine that accelerates and discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of ... > more -
Sulfur hexafluoride
Sulfur hexafluoride (SF6) is a gas whose molecules consist of one sulfur atom and six fluorine atoms. It is colorless, odorless, non-toxic, and non-flammable, and is soluble in water and some other ... > more -
Isaac Newton
Sir Isaac Newton, PRS, (4 January [O.S. 25 December 1642] 1643 to 31 March [O.S. 20 March] 1727) was an English physicist, mathematician, astronomer, alchemist, inventor and natural philosopher who ... > more -
Special relativity
Special relativity inter-relates space and time in such a way that the speed of light is constant, and the theory leads to situations where two observers can disagree over time intervals and ... > more
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