- #1
Jhenrique
- 685
- 4
If Newton is unit for measure force, meter is unit for measure length and radian is unit for measure angle, so, bel is unit for measure which physical(/mathematical) quantity?
f95toli said:The most common example is sound, (where it tells you the sound pressure relative to a standardized pressure, which if I remember correctly is something like 1 micropascal)
Jhenrique said:I never need to use dB or B for anything, but now, in Control Theory, the argument of the transfer function is the phase shift and the absolute is the gain and the gain is measured in dB. Gain and sound intensity are different concepts, I think, but they have the same unit, dB. Which is the difference and iguality concepctual between gain and sound intensity?
A Bel is a unit of measurement for the ratio between two quantities of the same physical quantity. It is commonly used in telecommunications to express the ratio of power levels.
No, Bel is not a SI (International System of Units) unit. Instead, it is a derived unit that is used alongside SI units.
Bel and decibels (dB) are related through a logarithmic scale. One Bel is equal to 10 decibels.
No, Bel can only be used to measure the ratio between two quantities of the same physical quantity. It cannot be used to measure other physical quantities such as length, mass, or time.
The term "Bel" is named after Alexander Graham Bell, the inventor of the telephone. It was proposed in his honor by the Bell Telephone Company in the early 1920s.