4 ms·
> In theory it could kill a person if it pulsed the correct harmonics If you're thinking about RF, then frequency doesn't matter that much. It's just that abso
by Florin_Andrei 10y ago
> In theory it could kill a person if it pulsed the correct harmonics
If you're thinking about RF, then frequency doesn't matter that much. It's just that absorption and penetration slowly change with frequency, that's all. There are no "deadly frequencies" there.
If you're thinking about modulating the RF with some signal matching the heart rate or some brain waves, that's... interesting, but I'm not sure if it has ever been proved to work.
- Cieplak 10y agoFrequencies considered especially dangerous occur where the human body can become resonant, at 35 MHz, 70 MHz, 80-100 MHz, 400 MHz, and 1 GHz. https://en.wikipedia.org/wiki/Radiation_burn https://en.wikipedia.org/wiki/Radiation_burn At frequencies near the body's natural resonant frequency, RF energy is absorbed more efficiently, and maximum heating occurs http://www.arrl.org/rf-radiation-and-electromagnetic-field-safety http://www.arrl.org/rf-radiation-and-electromagnetic-field-s...
- Florin_Andrei 10y agoI stand corrected, I forgot about resonance.
- analognoise 10y agoThanks for those.
- 6stringmerc 10y agoHaving trouble trying to understand how what I read fits in, but the guy who designs those massive mega wattage sound systems for festivals - Funktion1 - commented in an interview about how there are, essentially, lethal sound waves of sorts. >There was this French bloke at the turn of the 20th century who built a giant whistle that produced sub-bass frequencies of around 7.1 or 7.2 Hz. The first time that he got it to work, he liquidized himself. It just turned his insides to mush—poor bugger. http://djtechtools.com/2014/04/10/funktion-ones-tony-andrews-on-setting-up-soundsystems-from-wembley-stadium-to-your-bedroom/ http://djtechtools.com/2014/04/10/funktion-ones-tony-andrews...