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Q: Hi, 22 KhZ is not ultrasonic!!!

demandé par BG521722533 sur 2024-01-30 12:42:01

ququci A vibration of 22KHz is ultrasound frequency! ( kHz = vibration per second) But this toothbrush vibrates at a frequency of 22000 per minute = 22000:60 sec = 367 per sec. So the frequency is 367 Hz or 0,367 kHz which is definitely not ultrasound. 367Hz is an audio tone.

2024-01-30 01:01:43 Utile (4)
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