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  • Description: aimed
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    • Martin bombers

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    • The rear gunner of the Martin bombers are also protected by Plexiglas enclosures which can be revolved mechanically to train multiple machine guns at planes attacking from the rear. Resembling the dome of an astronomical observatory the enclosure...
    • Health

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    • Aim ray at absenteeism: "Industrial Ultraviolet Ray Solarium", aimed at reducing absenteeism in war plants, is official name for the merry-go-round system of artificial sunlight irradiation (above) introduced by the Hanovia Chemical & Mfg. Co.,...
    • Explosives research

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    • At the DuPont Company's Experimental Station, Wilmington Delaware, this Explosives Department research chemist uses high vacuum, glass equipment in a study that may lead to a new chemical compound or a new and better way of making a known compound....

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