Science: Ideas for War

During World War I someone offered the British Government a chemical which, he said, would freeze clouds solid. Guns could then be mounted on the clouds, to ward off airplane attacks.

So many ideas of this specific gravity were sent in that the authorities got to skimming them over rather hurriedly, perhaps missing a few that had some actual value. The story is still current in Britain that in 1915 a gunner submitted a device for plotting the course of attacking aircraft to increase the accuracy of antiaircraft fire. In 1918 he was finally...

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