3 ms·
It’s not clear to me that the LEDs are not selected based on their emission frequency/photodiodes don’t have a filter. That could allow a more sensitive measur
by new299 6y ago
It’s not clear to me that the LEDs are not selected based on their emission frequency/photodiodes don’t have a filter.
That could allow a more sensitive measurement than possible with the human eye.
- srtjstjsj 6y agoThe color isn't random natural color. It's engineered specifically for the tests and it's engineered to be visible.