It was in the popular press referring to a paper in nature earlier this year about the first witnessed interaction between two time crystals. I will dig and see if I can find it.
Just read an article about time crystals. I understand regular crystals vary in a routine fashion through space but are unchanged over time. Time crystals apparently change periodically over time. I tried the usual googling but my brain has nowhere to put this. Can someone dumb this down for me?
Today I learned that in Indonesia folks will affix small devices to the feet of pigeons so when they fly it makes a whistling noise. The person who told me he had no idea why it was done.
I read through chapter one. It's different than what I'm used to but in an interesting way. Haven't gotten to the parabolas yet. I'm excited to though.