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	Comment to: - Komentti viestiin: Levtr
	I'd like to send this to http://xnxxteen.site/ cam4cam To levitate small objects like water droplets, you need fairly high acoustic power, at around 160 or 165 dB (the sound level of a rocket launch), Foresti says. Sometimes scientists will fashion their acoustic levitators in special sound chambers to protect their hearing; Foresti and his team instead used frequencies above 20 kHz, the upper limit of human hearing. , Author: - Kirjoittanut: Anonymous, 07/31/2020,
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	I'd like to send this to http://xnxxteen.site/ cam4cam To levitate small objects like water droplets, you need fairly high acoustic power, at around 160 or 165 dB (the sound level of a rocket launch), Foresti says. Sometimes scientists will fashion their acoustic levitators in special sound chambers to protect their hearing; Foresti and his team instead used frequencies above 20 kHz, the upper limit of human hearing.