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Bolt, Usain St. Leo

(Encyclopedia) Bolt, Usain St. Leo, 1986–, Jamaican sprinter. Unusually tall (6 ft 5 in./1.96 m) for his sport, he won the gold medal for the 200-m sprint at the 2002 world junior championships and…

Fighter Planes: Lockheed Martin F-16

by David Noland Lockheed Martin F-16 Specs Length: 49 ft, 5 in. Span: 32 ft, 8 in. Takeoff weight: 37,500 lbs Max speed: 1,500 mph Max altitude…

Fighter Planes: MiG-15

by David Noland MiG-15 Specs Length: 35 ft, 7 in. Wingspan: 33 ft, 1 in. Empty weight: 8,100 lbs Max weight: 13,300 lbs Max speed: 670 mph…

Geometry: Non-Euclidean Geometry

Non-Euclidean GeometryGeometryWhose Geometry Is It Anyway?Non-Euclidean GeometryHyperbolic Geometry: Saddle Up!Spherical GeometryTaxi-Cab GeometryMax GeometryHow Many Shapes Can a Circle Have?…

Geometry: Spherical Geometry

Spherical GeometryGeometryWhose Geometry Is It Anyway?Non-Euclidean GeometryHyperbolic Geometry: Saddle Up!Spherical GeometryTaxi-Cab GeometryMax GeometryHow Many Shapes Can a Circle Have? In…

Notable Children's Videos of 2003

Company’s ComingHow Do Dinosaurs Say Good Night?The Hungry SquidI Love You Like Crazy CakesMartin’s Big WordsMax (Reading Rainbow)Merry Christmas, Space CaseMiss Twiggley’s TreeOperation CuckooOur…

Today’s Birthdays

$(document).ready(function() { $("#chronology").validate({ errorPlacement: function(error,element){alert(error.html())}, onfocusout: false, onkeyup: false, rules: {…

genealogy

(Encyclopedia) genealogygenealogyjēˌnēŏlˈəjē, –ălˈ–, jĕ– [key], the study of family lineage. Genealogies have existed since ancient times. Family lineage was originally transmitted through oral…

Arphaxad

(Encyclopedia) ArphaxadArphaxadärfăkˈsăd [key], in the Bible. 1 Median king at Ecbatana, defeated by Nebuchadnezzar. He has not been definitely identified with anyone in other records. 2 Son of Shem…

(Encyclopedia) record player or phonograph, device for reproducing sound that has been recorded as a spiral, undulating groove on a disk. This disk is known as a phonograph record, or simply a record…