(Encyclopedia) Escherichia coliEscherichia coliĕshˌərĭkˈēə kōˈlī [key], common bacterium that normally inhabits the intestinal tracts of humans and animals, but can cause infection in other parts of…
Famous Equations and Pools of Jell-OTheories of the UniverseCracks in a Newtonian WorldFaster Than a Speeding Light WaveIt All Depends on Your PositionThe Relative Nature of Space and TimeGeological…
Quantum Mechanics vs. General RelativityTheories of the UniverseSupersymmetry, Superpartners, and SupermanAttempts at UnificationQuantum Mechanics vs. General RelativitySymmetry BreakingIntroducing…
What causes a rainbow? A rainbow in Indiana, Oct. 2015. Source: AP Photo/Michael Conroy Although light looks colorless, it’s made up of many colors-red, orange, yellow, green, blue…
The pH ScaleChemistryAcids and BasesWhat Are Acids and Bases?Properties of Acids and BasesThe pH ScaleTitrationsBuffers As you might imagine, it's useful to be able to measure the acidity of…
(Encyclopedia) rickettsiarickettsiarĭkĕtˈsēə [key], any of an order (Rickettsiales) of very small microorganisms, many disease-causing, that live in vertebrates and are transmitted by bloodsucking…
(Encyclopedia) transcendentalismtranscendentalismtrănˌsĕndĕnˈtəlĭzəm [key] [Lat.,=overpassing], in literature, philosophical and literary movement that flourished in New England from about 1836 to…
(Encyclopedia) Ai WeiweiAi Weiweiīˈ wāwā [key], 1957–, Chinese artist, architect, filmmaker, and political activist. He is the son of poet Ai Ch'ing, who was internally exiled (1958–76) to work camps…
(Encyclopedia) steamship, watercraft propelled by a steam engine or a steam turbine.
Despite such innovations as turbo-electric drive, which converts steam energy into rotational power for…
