Birdwatch Note Rating
2024-01-01 20:04:36 UTC - HELPFUL
Rated by Participant: 2863CB26197BE6531859C849D3A5EFE3FF3271C91986E1200403DAA5D0428BF4
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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