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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.
Discovering STEM Physics Laws Set. 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 ...
STEM learning might sound like some kind of fad simply because the acronym is fairly new, but the truth is that kids are hard-wired to find these academic disciplines (science, technology ...
Discovery Kids (stylized as discovery k!ds) is a brand name owned by Warner Bros. Discovery. Starting as a television block within Discovery Channel , the brand expanded as a separate television channel in October 1996. [ 1 ]
Applying Thomson's equations described above to an alpha particle colliding with a gold atom, using the following values: q g = positive charge of the gold atom = 79 q e = 1.26 × 10 −17 C; q a = charge of the alpha particle = 2 q e = 3.20 × 10 −19 C; q e = elementary charge = 1.602 × 10 −19 C; R = radius of the gold atom = 1.44 × 10 ...
The long half-life of uranium-238 (4.47 × 10 9 years) makes it well-suited for use in estimating the age of the earliest igneous rocks and for other types of radiometric dating, including uranium–thorium dating, uranium–lead dating and uranium–uranium dating. Uranium metal is used for X-ray targets in the making of high-energy X-rays. [12]
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