What Is a Decibel (dB)?
The decibel is a unit that measures the intensity of sound (sound pressure) on a logarithmic scale β meaning that for every 10 dB increase, the actual sound energy roughly increases tenfold. So even a small-looking difference in numbers can translate into a much bigger difference in perceived loudness.
Guidelines for Protecting Your Hearing
The World Health Organization (WHO) recommends against continuous exposure to noise above 85 dB for more than 8 hours a day, citing hearing damage risk. In loud environments like concert venues or construction sites, wearing hearing protection such as earplugs is a good idea.
Frequently Asked Questions
How much of a real difference is 10 dB?
Because the decibel scale is logarithmic, every 10 dB increase means roughly a tenfold increase in actual sound energy. For example, 70 dB carries about 10 times more sound energy than 60 dB.
Is there similar content about temperature or humidity?
Yes β a guide on Earth's rotation and orbit covers a variety of other everyday science facts as well.