... out of the crystal receiver stage when the first vacuum tube became available after World W ar I -- the Signal Corps ... putting a microphone into the plate circuit of a vacuum tub e, which resulted in wireless transmission by voice. read more...

... pitchforks, sticks and clubs and through force made a stubborn resistance with the Bernese authorities. They strongly ... generally made of wood and, rarely, of pewter. The wash tub was a trough referred to in the inventory as “belly-tubs.” read more...

... be channeled into inanimate objects such as the baquet, a tub made of wood filled with water, in which Whorton (2002), pp ... into sick people who grasped iron rods protruding from the tub. Mesmer reportedly had tremendous success with his read more...