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Shining a Light on the Subject
What Is the Speed of Dark?
Key Facts In This Video
Optophobia is the fear of opening your eyes. 00:08
If the sun is less than six degrees below the horizon, it is civil twilight. 04:45
The Dunning-Kruger effect is a novice overestimating their knowledge and abilities in an area because they don't even know how little they know. 09:25
Related Video: The Speed of Light Is Not About Light
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