Birdwatch Note Rating
2024-01-01 18:47:07 UTC - HELPFUL
Rated by Participant: 0CF4D082ABB646D29BA4976053A7488257B59BF0B847C64B2E91E152E4704830
Participant Details
Original Note:
Negative dBs can't exist acoustically, as it represent the sound pressure level (SPL) of an acoustic sound wave. 0dB SPL mean absolute no air particles movement which is impossible outside vacuum conditions. Negative dBs can exist as a reference to a base (zero) dB level. https://www.animations.physics.unsw.edu.au/jw/dB.htm
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