What is Twilight (video)

Of course, I want the app….

One response to “What is Twilight (video)

  1. Those diagrams were comically out of scale — somehow, 12 degrees becomes about 40, the angle subtended by the Sun itself is much larger than 0.5 degrees, etc. And why is the ground underneath the hiker’s feet labelled the horizon? Weird.

    Anyway: check out the video glossary from Lawrence Berkeley!