For sound, its common to use decibel with a reference of 0. What are some examples where the decibel scale is used Decibel is used to quantify the intensity of sound. The band got their name from this WW2 name for a specific category of UFO they were spotting on their missions, but doesn’t mean those who fight foo. This is why the logarithmic scale of decibel is useful when quantifying values that have a large range. It got cleaned up when the story hit the press, and in the official logs.īut yeah. Their radar operator gave them the name, but the name was actually “fucking foo fighters”, as in “those fucking foo fighters!”. They are fighterplanes that are foo.Īlso, fun fact: The name “foo fighters” came from the 415th Night Fighter Squadron, who were a US Air Force unit from 1943-1947, in the mediterranean and northern europe. A sound that is 10 times more intense ( 110 -11 W/m 2) is assigned a sound. 0 dB occurs when you take the log of a ratio of 1 (log 1 0). The threshold of hearing is assigned a sound level of 0 decibels (abbreviated 0 dB) this sound corresponds to an intensity of 110 -12 W/m 2. The scale for measuring intensity is the decibel scale. They’re not like “firefighters” or “crime fighters”. This type of scale is sometimes referred to as a logarithmic scale. They’re very definitely NOT fighters against foo. People may hear distinct sounds at varying frequencies ranging from 20 to 20,000 cycles per second. On the decibel scale, near absolute silence is designated as 0 dB while a sound 15 times louder is labeled as 15 dB 11. The scale of decibels is logarithmic, not linear. We don’t know what these unidentified flying objects are, so they’re foo. A decibel is defined by a ratio that represents a logarithmic scale in respect to a reference pressure level. Not “Allied fighters”, not “Nazi fighters” (though sometimes the foo fighters were called “Kraut Fireballs”), not jet flighters… foo fighters. As in, they’re fighters, like fighter planes, but the foo type. Echoes on the radar, lights that move in the sky, including ones that seemed to follow them, stealthily. Then WW2 happens, specifically the air war: Pilots are flying more and faster than ever before, and they see weird stuff. This comic is popular in the 30s, and “foo” enters general culture. Smokey Stover (where “foo” comes from) drives a Foomobile.įoo doesn’t mean anything. decibel (dB), unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds.One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio. It means a thing but the thing is not specific. But the logarithmic decibel scale goes up in powers of ten: every increase of 10dB on the scale is equivalent to a 10-fold increase in sound intensity (which broadly corresponds with a doubling in loudness). It’s a “thingamajig”, a “john doe”, a “widget”, a “thingy”. High sound pressure levels can have both immediate and long-term effects on our hearing and overall well-being. As someone who is named in a way that dates back to the same base word, the first thing you need to understand is that “foo” is a placeholder word. The logarithmic nature of the decibel scale allows us to represent a wide range of sound intensities with a manageable scale.
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