Category: "Polycrystalline ice"

Puddle gets its grooves (upon freezing), part I

February 16th, 2019
These grooves appear on the surface of frozen puddles. [image:111] Most grooves are straight lines, and most of these also appear to have relatively symmetric sides, such as those marked #s 1, 2, & 4 in the above image. But some, such as #3, have… more »

Grain boundaries between crystals in big ice

November 6th, 2017
Most snow crystals are single crystals. Being single is an outcome of their growth process and small size. On the other hand, most larger ice formations are not single crystals. These latter types are called "polycrystals". A polycrystal usually appears… more »