A surname. / A city in Arizona. / A city in Georgia, United States. / A city in Kansas. / A town in Texas. / A ghost town in Wisconsin.

An improvement on the Crookes tube in which the electrons are produced by thermionic effect from a tungsten filament heated by an electric current.

plural of Coolidge tube

plural of Coolidge effect

(biology, psychology) A phenomenon in animal species whereby males (and to a lesser extent females) exhibit renewed sexual interest if introduced to new receptive sexual partners, even after cessation of sex with prior but still available sexual partners.