![]() ![]() We have seen in this tutorial about the Decibel (dB) that it is a Base-10 logarithmic unit of power change and that the decibel unit is a 1/10th dimensionless value of a Bel (1 Bel 10 decibels or 1dB 0.1B). For every single increase on this scale, the magnitude is increased by a factor of 10. Then we can clearly see that the power curve is not linear but follows the logarithmic ratio of 1.259. This scale measures the magnitude of an earthquake, which is the amount of energy released by it. The Richter Scale - Earthquakes are measured on the Richter Scale, which is a base 10 logarithmic scale. ![]() The threshold of pain is about 120 dB and that causes hearing loss. So a doubling of sound intensity just leads to +3dB. What the pH scale is doing is measuring the concentration of hydrogen ions (H +) in a substance, and is given by the equationġ0^(10^6)=10 \times 6 = 60 dB Now, if two people are talking at once, that only raises the dB to 63 dB.
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