nikitoz

yes, that's what I've been searching for %) thank you so much

Hi, everyone. One day I've seen some kind of (photo?)filming, when camera captures the movements of gas. I mean, the viewer can see, how gas expands and so on. Does someone know the name of this kind of filming? Maybe you can give me some links to articles or videos? ) I'll be very thankful, thanks in advance. p/s. Sorry for my ban English, I'm from Kazakhstan