Difference between revisions of "Decibel"
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| − | The '''decibel''' is | + | The '''decibel''' ('''dB''') is a logarithmic unit, often used to measure sound [[pressure]]. Decibel means 1/10 of a Bel, after [[Alexander Graham Bell]]. There is no absolute decibel scale, so the decibel is used to measure sound in comparison to another sound, i.e., the 0 dB reference. This is defined as a sound pressure level of .0002 microbar, or 20 micropascals: commonly the threshold of hearing a sound with a frequency of 1 kHz. |
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| + | One website states that anything above 70 dB can cause hearing loss over a period of time.<ref>https://www.hear.com/resources/hearing-loss/decibels-chart/</ref> This includes professional sports games, rock concerts, construction, and firearms. | ||
| + | [[Category:Units of Measurement]][[Category:Physics]] | ||
| + | [[Category:Articles needing major improvement]] | ||
Latest revision as of 17:31, October 14, 2023
The decibel (dB) is a logarithmic unit, often used to measure sound pressure. Decibel means 1/10 of a Bel, after Alexander Graham Bell. There is no absolute decibel scale, so the decibel is used to measure sound in comparison to another sound, i.e., the 0 dB reference. This is defined as a sound pressure level of .0002 microbar, or 20 micropascals: commonly the threshold of hearing a sound with a frequency of 1 kHz.
One website states that anything above 70 dB can cause hearing loss over a period of time.[1] This includes professional sports games, rock concerts, construction, and firearms.