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By 1917, they sold chemistry sets, which they produced through World War II, in spite of restrictions on materials. Robert Treat Johnson, noting the number of chemistry students at Yale whose interest in the science began with a chemistry set, argued the production of chemistry sets was a "patriotic duty." [5]
The A. C. Gilbert Company was an American toy company, once one of the largest in the world. Gilbert originated the Erector Set, which is a construction toy similar to Meccano in the rest of the world, and made chemistry sets, microscope kits, and a line of inexpensive reflector telescopes.
Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.
Many other names have been used for this set, and its borders are not agreed on. Precious metals – Variously-defined group of non-radioactive metals of high economical value. Superactinides – Hypothetical series of elements 121 to 157, which includes a predicted "g-block" of the periodic table.
It also produced crafts plaster moulding sets Frog & Owl. [2] Thomas Salter Ltd. was founded in London in 1913, moved to Glenrothes, Fife, and closed in 1992. [3] Chemistry sets from Salter Science included a various number of chemicals, which were numbered, so that the numbers were the same across the sets. Some of the chemicals included were:
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The depiction of chemistry on stamps began in 1923 with the issue of a set of definitive French stamps commemorating the chemist and microbiologist Louis Pasteur. [1] Another early chemical stamp depicted the botanist and chemist Herman Boerhaave . [ 2 ]
Set index articles on molecular formulas (2,418 P) Pages in category "Set index articles on chemistry" The following 200 pages are in this category, out of approximately 791 total.