crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

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crwdns2933797:0Sam Goldheartcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Sam Goldheart

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-[* black] Time for another Science with iFixit!
-[* black] So, just how does the Fire Phone know where your mug is in relation to the phone, thus creating that fancy 3D effect?
-[* black] There are four [http://en.wikipedia.org/wiki/Infrared|IR] projectors, one near each corner of the phone. They're blasting you with non-human-visible infrared rays any time you're staring at the phone while the display is on.
+[* black] Time for some Science with iFixit!
+[* black] Just how does the Fire Phone know where your face is in relation to the phone and create that fancy 3D effect?
+[* black] There are four [http://en.wikipedia.org/wiki/Infrared|IR] projectors, one near each corner of the phone. They're blasting you with invisible (to the human eye) infrared rays any time you're staring at the phone while the display is on.
[* black] There are also four IR cameras capturing this information—one at every corner of the phone.
-[* black] The Fire Phone ~~triangulates~~ rectangulates your position, figures out that there's a human face looking at the display, and starts doing its wonderful joojoo magic — all in real time.
+[* black] The Fire Phone ~~triangulates~~ rectangulates your position, figures out that there's a human face looking at the display, and starts working its wonderful juju magic — all in real time.