(Encyclopedia) calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the…
(Encyclopedia) air navigation, science and technology of determining the position of an aircraft with respect to the surface of the earth and accurately maintaining a desired course (see navigation…
Has the government's response to 9/11 compromised civil rights in the name of national security? by Beth Rowen USA Patriot Act and Domestic Spying | Department of Homeland Security |…
ARE ALL THE STARS THE SAME? HOW DO STARS PRODUCE THEIR ENERGY? DO OTHER STARS HAVE PLANETS AROUND THEM? HOW DO WE MEASURE A STAR’S BRIGHTNESS? HOW STARS LIVE AND DIENEBULASBLACK HOLESFIND OUT…
MAGNETIC MATERIALSATTRACTION AND REPULSIONMAGNETIC DOMAINSMAGNETIC FIELDFIND OUT MOREMagnetism is what gives magnets their ability to attract objects made of iron or steel. A magnet creates…
Indicates a sudden break or abrupt change in continuity: “If—if you'll just let me ex-plain—” the student stammered. And the problem—if there really is one—can then be solved.Sets apart an…
The original Silicon Valley pioneers, the pair used their Stanford degrees to turn their garage-based business into one of the largest computer manufacturing companies in the world. They began by…
activistBorn: 1/11/1885Birthplace: Moorestown, N.J. Raised a Quaker, Paul graduated from Swarthmore College in 1905 and studied at the New York School of Social Work. From 1906 to 1909, Paul was a…
HEATON, David, a Representative from North Carolina; born in Hamilton, Butler County, Ohio, March 10, 1823; completed preparatory studies; studied law; was admitted to the bar; elected to the…
WICKHAM, Charles Preston, a Representative from Ohio; born in Norwalk, Huron County, Ohio, September 15, 1836; attended the public schools and the Norwalk Academy; learned the printerâs…
