badbatz: “Fig 7-1. (A) Edison’s aerophone, or pneumatic amplifier, provided a sound transmission channel into which additional energy was injected in the form of compressed air. Inset (B) shows how the sound-actuated valve throttled a steady flow of air, to create an instantaneous variation in flow that imitated the original sound vibrations.” (Taken with instagram) Food safety research taking you a bit far afield today, batz?

badbatz:

“Fig 7-1. (A) Edison’s aerophone, or pneumatic amplifier, provided a sound transmission channel into which additional energy was injected in the form of compressed air. Inset (B) shows how the sound-actuated valve throttled a steady flow of air, to create an instantaneous variation in flow that imitated the original sound vibrations.” (Taken with instagram)

Food safety research taking you a bit far afield today, batz?
Source: badbatz