4 ms·
If a sheet of paper is roughly .1 mm, then this must be running over 300GHz, or what is more commonly called infrared light, no?
by dcroley 8y ago
If a sheet of paper is roughly .1 mm, then this must be running over 300GHz, or what is more commonly called infrared light, no?
- deleted 8y ago[deleted]
- mediocrejoker 8y agoI think it runs around 60Ghz and uses phased arrays / doppler to make up the rest of the resolution.
- DoctorOetker 8y agogood catch, probably it's not actually resolving the individual card layers, but using the Lambert-Beer law of attenuation, after callibrating on a deck of known number of cards?