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Io = 10^-12 W/m2
n=2
log 2= 0,3
TI2=TI1 +10 LOG n2/n1
TI2= 30 + 10 log2/1
TI2 = 30 + 10 . 0,3
TI2 = 30 + 3
TI2 = 33 dB
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