Crookes tube n. (Phys.) A vacuum tube in which the exhaustion is carried to a very high degree, with the production of a distinct class of effects; so called from W. Crookes who introduced it.
... weapons to fight it; a large and specially fitted Crookes tube operated by powerful storage batteries and provided with peculiar screens and reflectors, in case it proved intangible and opposable only by vigorously destructive ether radiations, and a pair of military flame-throwers ... — The Shunned House • Howard Phillips Lovecraft
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