So, have you ever played with a toy that lights up when you push or squeeze it? Like those light-up balls or bracelets that you get at parties? Well, that's a bit like what mechanoluminescence is!
You see, everything around us is made up of tiny things called atoms. And sometimes, when we push or squeeze things made of certain materials (like crystals or certain types of plastic), those atoms get all excited and start to give off little bursts of light!
It's like jumping on a trampoline - you add some energy and then suddenly, woosh! You bounce up into the air! Only instead of bouncing, these atoms give off light. This is what we call mechanoluminescence.
Scientists have been studying mechanoluminescence for a long time because it's really interesting and could help us better understand how some materials work. Plus, it just looks really cool!