Word: x-rays
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...there knew that in moisture-laden air invisible particles of dust collect moisture until they become visible water vapor. Professor Wilson theorized that ionized molecules in a dust-free, moisture-logged receptacle would also provide foci for water condensation. Into such a chamber he shot alpha particles from an x-ray machine. Drops did collect on the alpha particles...
...X-Rays. Several speeches set forth the new usefulness of X-rays in studying the crystal structures of pearls, limes, asbestos, butter, wax, etc. The X-ray studies of C. Norman Kemp in England on coal and coke cited, praised. X-raying of the structure of rubber, which is amorphous (noncrystalline) when unstretched and develops fibre-crystals when stretched at various tensions, was noted as a likely road to the discovery of how to make synthetic rubber...
...X-rays. Metals prevent passage of x-rays ordinarily used. A ring, on an x-ray photograph, is opaque, although the flesh of the finger is transparent. However, Professor George L. Clark of Massachusetts Institute of Technology, who established the first laboratory for applying x-rays to industry, showed the testers how he detected flaws in steel four-inches thick...
...scamps have crept into the business." Some hair dyes irritate the skin dangerously; others contain poisonous lead. Some freckle removers contain ammoniated mercury, a caustic poison that eats the skin. If a substance is powerful enough to dissolve hair, it is powerful enough to dissolve skin. Using the x-ray to remove hair may cause cancer. The A. M. A. is seeking laws to "forbid the sale of certain dangerous poisons as ingredients of cosmetics and to compel all makers of cosmetics to make truthful representations of their products."?Arthur J. Cramp, sharp-tongued, ruthless quack-killer and nostrum...
...X-Ray Department...