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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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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 Franklin

Benjamin Franklin was a hero of Colonial America and a man of amazing talents. He is still considered to be among the brainiest of the "Founding Fathers" of the United States. Franklin's achievements…

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

FRANKLIN, Benjamin, (uncle of Franklin Davenport), a Delegate from Pennsylvania; born in Boston, Mass., January 17, 1706; attended the Boston Grammar School one year; was instructed in elementa…

Benjamin HARRISON

HARRISON, Benjamin, (father of Carter Bassett Harrison and William Henry Harrison, grandfather of John Scott Harrison, great-grandfather of Benjamin Harrison [1833-1901] and great-great-great g…