@[email protected] to [email protected]English • 1 year ago"Wiffract" Wi-Fi method can read letters through wallswww.techspot.comexternal-linkmessage-square27fedilinkarrow-up1233arrow-down16
arrow-up1227arrow-down1external-link"Wiffract" Wi-Fi method can read letters through wallswww.techspot.com@[email protected] to [email protected]English • 1 year agomessage-square27fedilink
minus-square@[email protected]linkfedilink6•edit-21 year agoI think your fag packet calculation has got a power of ten wrong somewhere. Wi-fi is GHz so that would be on the order of centimetres I think.
minus-squareTurunlinkfedilink4•1 year agoYes. Wifi is 2.4 GHz, speed of light is 0.3 Gm/s. Therefore one wavelength is 0.3/2.4 m/s/Hz = 12.5 cm
minus-square@[email protected]linkfedilink1•1 year agoYeah, you’re right. Writing it smaller than 12.5 cm should do it, which is entirely reasonable.
I think your fag packet calculation has got a power of ten wrong somewhere. Wi-fi is GHz so that would be on the order of centimetres I think.
Yes. Wifi is 2.4 GHz, speed of light is 0.3 Gm/s. Therefore one wavelength is 0.3/2.4 m/s/Hz = 12.5 cm
Or 0.001 football pitches
Yeah, you’re right. Writing it smaller than 12.5 cm should do it, which is entirely reasonable.