Device for the study of the free fall of bodies under controlled pressure (Machine-translation by Google Translate, not legally binding)

摘要

Device for the study of the free fall of the bodies under controlled pressure consisting of a transparent tube of rigid material that allows, by means of a vacuum pump, to work at different pressures, containing inside it a laser diode system and phototransistors for the measurement of physical variables and contains a system of retention and release of the body that falls. (Machine-translation by Google Translate, not legally binding)