So You’re Underwater: Why Do You See That Circle of Light Above You?
Have you ever sat on the bottom of a swimming pool and pondered your watery ceiling? Most of the surface is a sheet of light blue, and you can’t see …
lights
Can You View a Round Solar Eclipse Through a Square Hole?
If you live in the US and missed the last total solar eclipse in 2017, good news! You’re about to get another chance. There will be a total solar eclipse …