Where does sound energy go in a bell jar experiment while there is vacum in the jar?
First, if there is a true vacuum, there is no sound. Sound is produced by a stimulating force vibrating molecules to a certain frequency in a medium . That’s why the voice of a person takes on a high pitch after breathing in helium. Helium is less dense than the surrounding air, this less density, within the throat where the vocal chords vibrate, allows the helium molecules to vibrate at a greater rate–the higher the rate of vibration, the higher the pitch of sound. Another problem the bell jar experiment produces is that the stimulating force must not be touching anything within the bell jar, otherwise, it will vibrate the thing it touches to some degree, depending upon its mass, and possibly produce sound. At any rate, the energy is absorbed into the surrounding mass. But in a true vacuum there would be no medium for the force to stimulate. In space an explosion would not be heard, nor would it produce a shockwave since there would be no surrounding medium. Particles of the bomb str
