P-6+Equations+and+Symbols

6.2 Equations
 * Relative intensity (measured in bels) = log I/I o
 * Ten bels = one decibel = 10 log I/I o

6.2 Symbols 6.4 Equations 6.4 Symbols I stands for intensity P stands for power in watts A stands for the square area in meters
 * I = P/A

6.5 Equations
 * Relative intensity (measured in bels) = log I/I o
 * Ten bels = one decibel = 10 log I/I o

6.5 Symbols 6.6 Equations
 * Closed tube ** λ = ** 4(l + 0.4d)
 * Open tube ** λ = ** 2(l + 0.8d)

6.6 Symbols 6.9 Equations
 * f/f’= l’/l
 * f/f’ = d’/d
 * f/f’ = // F // / // F // '
 * f/f’ = // D // ' / // D //

6.9 Symbols