The 2024 solar eclipse is fast-approaching. If your local library has run out of free solar eclipse glasses and you can't get a pair shipped to you in time, that doesn't mean you have to miss out on quite literally the event of the decade.Also: April 2024 solar eclipse FAQ: How to watch, what you need, and everything else to knowThe camera obscura is an ancient technology that uses a box, a tent, or even a whole room in a building to create a very rudimentary projector. The concept is simple:... Read this story
