The motion of electrons in Argon
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G.F.S.
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Article
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1922
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Elsevier Science
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English
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The incandescent filament of a tiny 2-volt lamp or an illuminated pin-hole serves as a suitable source of light. At some distance from it is placed a crystal of aragonite cut and polished with parallel faces at right angles to the bisectrix of the acute angle between the optic axes. On suitably orie