czlowiek odbiera dzwieki o natezeniu 10^-8W/m^2. Jaki jest poziom natezeniu tych dzwiekow? prog slyszalnosci:I 0=10^-12W/m^2W/m^2.
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Dane:
I = 10⁻⁸ W/m²
Io = 10⁻¹² W/m²
Szukane:
L = ?
L = 10 * log(I/Io)
L = 10 * log (10⁻⁸W/m² / 10⁻¹²W/m² )
L = 10 * log (10⁴)
L = 10 * 4
L = 40 [dB]
Odp: Poziom natężenia tych dźwięków to 40[db].