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Teach kids ages 8 and up about the laws of physics with this comprehensive science kit featuring six different projects, including a rubber band car, sharpening wheel, and rocket launcher.
Small 4 in. hemispheres, 1870s. The Magdeburg hemispheres are a pair of large copper hemispheres with mating rims that were used in a famous 1654 experiment to demonstrate the power of atmospheric pressure. When the rims were sealed with grease and the air was pumped out, the sphere contained a vacuum and could not be pulled apart by teams of ...
The first tracks observed in John Wood 's 1.5-inch (3.8 cm) liquid hydrogen bubble chamber, in 1954. A bubble chamber is a vessel filled with a superheated transparent liquid (most often liquid hydrogen) used to detect electrically charged particles moving through it. It was invented in 1952 by Donald A. Glaser, [1] for which he was awarded the ...
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Buffon's needle was the earliest problem in geometric probability to be solved; [2] it can be solved using integral geometry. The solution for the sought probability p, in the case where the needle length l is not greater than the width t of the strips, is. {\displaystyle p= {\frac {2} {\pi }}\cdot {\frac {l} {t}}.}
Stern–Gerlach experiment (1920): Otto Stern and Walther Gerlach demonstrates particle spin. Chicago Pile-1 (1942): Enrico Fermi and Leó Szilárd build the first critical nuclear reactor (1942) Wu experiment (1956): Chien-Shiung Wu leads the team that disproves the conservation of parity in particle physics.