"Spring balance" Quotes from Famous Books
... readiness. The motor was started and the machinery began to hum and throb. The propellers gained speed with every revolution. The airship had been made fast by a rope, to which was attached a strong spring balance, as it was desired to see how much pull ... — Tom Swift and his Wireless Message • Victor Appleton
... observed facts. Crookes' experiments, in particular, are very conclusive in this direction—his apparatus being very similar to that designed by Professor Alrutz. He employed a board, one end of which was attached to a spring balance, while the other end of the board rested upon a solid table. The subject placed his hands upon the board, and a definite pressure was registered by the balance—far more than could be obtained in any normal manner. These experiments of Crookes are classical, and have ... — The Problems of Psychical Research - Experiments and Theories in the Realm of the Supernormal • Hereward Carrington |