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crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Kevin Purdy
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| [* black] sensor disassembly? - no way | |
| [* black] And now, what you’ve been all waiting for: in-action shot of pulse oxymeter ([https://m.media-amazon.com/images/M/MV5BMjA0MDI1MTQ1Ml5BMl5BanBnXkFtZTcwMTQxMDQyMQ@@._V1_.jpg|light show|new_window=true]) | |
| - | [* icon_note] background info on the function with links |
| + | [* icon_note] By bouncing a Christmas-y array of red, green, and infrared lights onto your skin, then watching how they bounce back with photodiodes, the sensor can tell how oxygenated your blood is. |
| + | [* black] Blood that's oxygenated is bright red inside your body, dark red when it lacks for oxygen, and each reflects light differently. |