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Astronomical Constants

Light-year (distance traveled by light in one year) 5,880,000,000,000 miParsec (parallax of one second, or stellar distances) 3.259 light-yearsVelocity of light c. 186,282.4 mi/secAstronomical…

Chemistry: Equilibrium Constants

Equilibrium ConstantsChemistrySolution Chemistry/emical EquilibriaWhat Is an Equilibrium?Equilibrium ConstantsHeterogeneous EquilibriaDisturbing Equilibria: Le Châtelier's Principle
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Benjamin

A smart overcoat; so called from a tailor of the name, and rendered popular by its association with Joseph's “coat of many colours.” Source: Dictionary of Phrase and Fable, E.…

Theories of the Universe: Planck's Constant

Planck's ConstantTheories of the UniverseThat Old Quantum TheoryPlanck's ConstantPhotoelectric Effect Explained, the Quantum Strikes AgainBohr's Atomic Theory
 
 In Cracks in a Newtoni…

Benjamin Banneker

Benjamin Banneker was a free-born descendant of slaves who became a famous 18th-century astronomer, mathematician and surveyor. He is considered by many to be the first African-American scientist. Be…

Benjamin Spock

Dr. Benjamin Spock's book Baby and Child Care was published in 1946, just in time for the post-World War II baby boom, and became a best-selling guide to child rearing. Pediatrician Spock encouraged …

Benjamin Harrison

Benjamin HarrisonBorn: 8/20/1833Birthplace: North Bend, Ohio Benjamin Harrison was born in North Bend, Ohio, on Aug. 20, 1833, the grandson of William Henry Harrison, the ninth president. A gr…

Benjamin Harrison

Benjamin Harrison was a Civil War general and a Republican senator from Indiana before defeating incumbent Grover Cleveland in the 1888 presidential election. His presidency was undistinguished, but h…

Benjamin Franklin

Benjamin Franklin was a hero of Colonial America and a man of amazing talents, considered among the brainiest of the "Founding Fathers" of the United States. His achievements are too varied to sum up…