When you take a photo or video of a bright light source (or even just look at it) the light often appears a lot bigger than it actually is. The phenomenon is well known, but not really something I’d thought about. Why does it happen? What determines the shape of this glare and how big it is.
Glare comes up in several topics here in Metabunk, but there are two in particular. Firstly there’s the glare around the Sun, which has led some Flat Earth people to claim that the sun gets visibly bigger during the day. However ... Read even more
