Sentences with phrase «require tiny particles»

Rain and snow often require tiny particles floating in the cloud to trigger ice to form, and not just any particle will do.

Not exact matches

As coauthor Wenge Yang of the Carnegie Institution's Geophysical Laboratory explained: «It's been very difficult to watch these tiny particles be born and grow in the past because traditional techniques require that the sample be in a vacuum and many nanoparticles are grown in a metal - conducting liquid.