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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.
Field ion microscope image of the end of a sharp platinum needle. Each bright spot is a platinum atom. The field-ion microscope (FIM) was invented by Müller in 1951. [1] It is a type of microscope that can be used to image the arrangement of atoms at the surface of a sharp metal tip.
Beever's ball and stick model of ruby (Cr-doped corundum) made with acrylic balls and stainless steel rods. However, most molecules require holes at other angles and specialist companies manufacture kits and bespoke models. Besides tetrahedral, trigonal and octahedral holes, there were all-purpose balls with 24 holes. These models allowed ...
The Rutherford model is a name for the first model of an atom with a compact nucleus. The concept arose from Ernest Rutherford discovery of the nucleus. Rutherford directed the Geiger–Marsden experiment in 1909, which showed much more alpha particle recoil than J. J. Thomson's plum pudding model of the atom could explain. Thomson's model had ...
The company was founded in 1939 by William M. "Bill" Lester (1908-2005) and his first wife, Betty L (Lubarsky). [1] Rapidly establishing itself as a “leading contractor of custom-made parts and products in plastic” [2] Pyro employed the injection molding method for forming plastic shapes, which Lester had perfected in the early 1930s. [3]
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Minicraft Model Kits, Inc. (USA) MiniHobbyModels (Macau, China) - brand of Trumpeter; Miniwing (Czech Republic) Mir (Belarus) - renamed to Korpak; Mirage Hobby (Poland) Miroslav Němeček (Czech Republic) Mister Kit (Italy) Mitsuwa Model (Japan) Mixkit (France) Miyauchi (Japan) Modela (Czechoslovakia) Modelcollect (China) Modelcraft (Canada ...
Several of the CPK colors refer mnemonically to colors of the pure elements or notable compound. For example, hydrogen is a colorless gas, carbon as charcoal, graphite or coke is black, sulfur powder is yellow, chlorine is a greenish gas, bromine is a dark red liquid, iodine in ether is violet, amorphous phosphorus is red, rust is dark orange-red, etc.