Military submarines use red light instead of fluorescent or other light types for specific, scientific reasons. Here's ...
The phone's periscope lens consisted of two lenses, one of which was positioned vertically, and the other horizontally, similar to the way a submarine periscope works. Oppo's periscope lens tech ...
It's easier for a submarine crew's night vision to adjust to red light rather than a typical white light. When the eyes detect low light for longer than 20 minutes, the body produces the rhodopsin ...
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