4 ms·
A sonogram can see your heart beating too, but no one thinks sonograms are dangerous(because they are not).
by ch4s3 1y ago
A sonogram can see your heart beating too, but no one thinks sonograms are dangerous(because they are not).
- transpute 1y agoUnsolicited remote sonograms are stopped by walls, floors, ceilings and doors, unlike wireless radio networks.
- bookofjoe 1y agoFor now
- ch4s3 1y agoA concrete wall stops wifi pretty well.
- transpute 1y agoHow thick a concrete wall is needed to stop wifi? Or does the concrete wall contain fine wire mesh?
- dilyevsky 1y agoIf by "fine" you mean minimum ~10mm rebar then yes
- ch4s3 1y agoHave you never walked into a building an lost cell reception?
- transpute 1y agoFound a table with attenuation by frequency and building material, e.g. low-emission glass can block more than concrete, https://www.signalbooster.com/blogs/news/how-much-which-building-materials-block-cellular-wifi-signals https://www.signalbooster.com/blogs/news/how-much-which-buil... 800Mhz 1900Mhz 1/2" Drywall 2.03 dB 2.43 dB Venetian Plaster 7.91 dB 16.22 dB 6" Concrete Wall 10.11 dB 19.41 dB Glass Window 4.35 dB 4.38 dB Low Emission Glass 33.8 dB 33.8 dB Brick 7.57 dB 14.66 dB Solid Wooden Door 6.11 dB 12.33 dB
- KingLancelot 1y ago[dead]
- pessimizer 1y agoSound can certainly be dangerous to you.
- ceejayoz 1y agoSo can water. That doesn't make it inherently dangerous in all amounts.
- elric 1y agoUltrasound can be used to blast tumours or break kidney stones. And according to Wikipedia there seems to be a really weird correlation between having an ultrasound and being lefthanded. But that sounds almost too ridiculous to be true.