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Isaac Newton was a mathematician, physicist, astronomer, alchemist, theologian, and author who formulated the laws of motion and universal gravitation. He published his findings in the Principia, which explained the Solar System's heliocentricity and the motion of objects on Earth and celestial bodies.
Learn how Rutherford and his colleagues discovered the nucleus of the atom by measuring how alpha particles are scattered by a thin metal foil. Find out the history, the method, and the results of the landmark experiments that changed the understanding of atomic structure.
Learn about the equalities that involve trigonometric functions and are true for every value of the variables. Find the Pythagorean, reciprocal, reflection, shift, periodicity, angle sum and difference, and Ptolemy identities with examples and proofs.
A comprehensive and chronological table of the 45 men who have served as president of the United States since 1789, with their portraits, names, terms, parties, and vice presidents. Learn about the history, politics, and controversies of the American presidency.
Here's how the Dancing With the Stars wardrobe department is making Anna Delvey's ankle monitor outfits while she's competing.
A suffix is a word element that is added to the end of a word to change its meaning or function. This web page provides an alphabetical list of medical suffixes and their meanings, origins, and examples, derived from Greek, Latin, or other languages.
Learn about the history, components, and projections of the U.S. federal government's debt, which is the total amount it owes to its creditors. See how the debt has fluctuated over time, as a percentage of GDP, and by type of holder.
Cast members of Prison Break: Amaury Nolasco, Robert Knepper, Wade Williams, Sarah Wayne Callies, Wentworth Miller with executive producer Matt Olmstead. This is a list of characters in the American television series Prison Break.