document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=57019>Question 57019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What relevance and application of logarithmic functions in real-life situations </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #38734 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=38734\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What relevance and application of logarithmic functions in real-life situations<BR>\n" );
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document.write( "One is the measurement of sound and RF signal strength. The ear itself appears to logrithmic. The measuring of sound of music, noise etc. is measured in decibels:\r<BR>\n" );
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document.write( "A decibel (DB)  = 10*(logP1/logP2) measures the ratio of Power (P1) to Power(P2), if it is referenced to 1 milliwatt, it is referred to as DBM. A whole set of formulas for power/voltage/impedance uses the logrithmic relationships. <BR>\n" );
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