Albert Einstein (1879–1955)AIP Niels Bohr LibraryVladimir Lenin (1870–1924)Novosti PhotosWoodrow Wilson(1856–1924)The Library of Congress Picture Collection1910Boy Scouts of America incorporated.…
ATMOSPHEREOCEANSLANDICE AND SNOWEARTH SCIENCESTUDY TECHNIQUESBIOSPHEREAXISFIND OUT MOREThe rocky ball that forms our world is one of nine planets in the Solar System. Earth is a sphere, with a…
Hades Takes a Wife: PersephoneClassical MythologyWhat the Hell? Adventures in the UnderworldHades Takes a Wife: PersephoneThe Cunning Rogue: SisyphusThe Not-So-Heavenly Host: TantalusUndying Love:…
Scientific Origins of the UniverseTheories of the UniverseScientific Origins of the UniverseBang That DrumA Big Bang AlternativeThe Accelerating UniversePlasma CosmologyThe Standard ModelThe Alpha…
(Encyclopedia) interstellar matter, matter in a galaxy between the stars, known also as the interstellar medium.
The interstellar gas, which constitutes about 99% of the interstellar matter,…
palmA hand-held computer. PCPersonal computer. Generally refers to computers running Windows with a Pentium processor.printed circuit boardPC boardPrinted Circuit board. A board printed or etched…
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Indigenous peoples exist throughout the world, from South America to Asia, Europe to Australia. And North America is no different— with 574 recognized tribes in the continental…
A Brief History of Sound in MoviesMovies and FilmFilm: Sound in MoviesA Brief History of Sound in MoviesBring on Da Noise: Synchronous and Nonsynchronous SoundSound Effects and Their FunctionsA…
What's the Big Idea?Writing WellIn the Hot Seat: Writing Under PressureWhat's the Big Idea?Write This WayThe Golden RulesWhen the Meter's RunningPanic in the Streets There are more pressure writing…
