Talk:Shabbat microphone

Is it really kosher?

This web page explains why a conventional sound amplification system is considered not kosher: "it contravenes the prohibition of performing labor on the Sabbath or on holy days. Labor is defined in the Halacha (Jewish Law) as the creation of anything new. Since conventional sound transduction or reproduction involves the creation of several new things or states, that is, the speaker's sound causes a diaphragm to move that was previously at rest (a new state), the diaphragm motion creates an electrical current that did not exist before, the electrical current causes another diaphragm to move, and the diaphragm motion creates a new sound that also did not exist before (albeit sounding the same, it is nonetheless not the same sound), therefore, its use is not kosher"

and how the acousto-fluidic system works: "sound can be amplified by using the mechanical gain obtained from the deflection of a high energy jet of air."

I fear that the rabbi who deemed the acousto-fluidic system kosher may not have thought things through. Can anyone explain why the deflection of a diaphragm is considered a form of labor, while the deflection of a high-energy jet of air is not a form of labor? 75.163.178.230 (talk) 04:01, 3 June 2013 (UTC)