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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.
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]
National Geographic revealed its annual Pictures of the Year issue. The photos show wildlife, scientific innovations, and more. ... the magazine's photo editors select "the most stunning photos ...
National Geographic (formerly The National Geographic Magazine, [3] sometimes branded as Nat Geo [4]) is an American monthly magazine published by National Geographic Partners. [5] The magazine was founded in 1888 as a scholarly journal, nine months after the establishment of the society, but is now a popular magazine.
The final 20 photos were narrowed down from a pool of 2.3 million − 300,000 more than in 2023, Nat Geo Editor-in-Chief Nathan Lump said.
National Geographic’s 007 Tom O'Brien photographed in the studio at National Geographic. With a background in mechanical engineering, O’Brien also dabbled in photography as a hobby since his ...