3 ms·
That's got to be a pretty loud noise to be able to transfer enough power to a device at a distance to be significant. Can long term exposure to loud ultrasonic
by noonespecial 12y ago
That's got to be a pretty loud noise to be able to transfer enough power to a device at a distance to be significant. Can long term exposure to loud ultrasonic noises damage your hearing even if you can't "hear" them somewhat like the way IR light can damage your eyes even though you can't see it?
Think I might let a different set of early adopters try this one out before I put one in my bedroom to charge my iPad. It may just be ignorance (knowing just about nothing when it comes to acoustics) on my part, but I'm way more afraid of this than inductive wireless charging.
- drcross 12y agoI would think so, even if not currently measurable. Infrasonics which is sound on the other end of the inaudible spectrum is the phenomenon where animals know when an earthquake is coming, or when rats know to leave a sinking ship http://en.wikipedia.org/wiki/Infrasound http://en.wikipedia.org/wiki/Infrasound I'm not an expert in this field though.
- patcheudor 12y agoYes, it has been recognized that ultrasonic sound can cause hearing damage. http://www.tinnitusjournal.com/detalhe_artigo.asp?id=109 http://www.tinnitusjournal.com/detalhe_artigo.asp?id=109 OSHA even sets standards for exposure & in fact my ultrasonic cleaner manual recommends wearing ear protection when in use. https://www.osha.gov/dts/osta/otm/noise/health_effects/ultrasonics.html https://www.osha.gov/dts/osta/otm/noise/health_effects/ultra...