Re: monitor know-how?

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1 total messages Started by Hal Repasky Mon, 21 Mar 1994 19:14

#1654

Author: Hal Repasky
Date: Mon, 21 Mar 1994 19:14

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Dear All,

I need some help...a humbling experience for a physics teacher!

In my Adv Physics class we are trying to do a project to predict
Decibel levels in our high school auditorium then compare them to
actual measurements.
We will actount for reflection later!

I know that Power is proportional to amplitude squared   P = k A*A

and that Intensity is proportional to Power    I = P/Area (crosssectional)

but (R.I.)  Relative Intensity = 10 Log (I/Io)  in dB's

Does that mean R.I. is proportional to the Log of A*A?

What I am trying to find is the easy? or basic relationship between

R.I. and Amplitude...

Anyone out-there can you explain better!?

Thanks,
__________________________
Hal Repasky, Sci Dept     |
repasky@seneca.pp.psc.edu |    Looking to the Future!
Seneca Valley S.H.S.      |
Harmony, PA 16037         |
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