Canadians may think they're intimately familiar with ice in all its forms, but there is one kind that most have probably ...

Space ice” contains tiny crystals and is not, as previously assumed, a completely disordered material like liquid water, ...

"Space ice" contains tiny crystals and is not a completely disordered material like liquid water, as previously assumed, ...

White frost (or hoar frost): White frost is a deposit of ice crystals formed by direct deposition on objects exposed to the air. Water vapour in the air freezes upon contact with an object that has a ...

4K footage captures hoar frost, where ice crystals delicately form on surfaces as water vapor freezes directly in cold, clear, humid winter nights. Royalty-free licenses let you pay once to use ...

The National Weather Service defines hoarfrost as “a deposit of interlocking crystals formed by direct sublimation on objects, usually those of small diameter freely exposed to the air, such as ...

Friday, Feb. 21, 2025. (Courtesy: Tim Sweet) The National Weather Service describes rime frost as a deposit of interlocking ice crystals formed by direct sublimation on objects.

This uniquely named ice has an equally unique shape. The feather-looking ice with sharp angles is a good indication that Portland’s icy spots are hoar frost and not rime ice.

Hoar frost is what we are most familiar with; it occurs on cold, clear nights and forms when water vapor freezes into ice crystals, coating plants and lawns with a sparkly sheen by sunrise.

For years I have inaccurately called these thick frost crystals, “hoar ice crystals,” but with more detailed study, I have found that they are “rime ice crystals.” ...

The story of snow crystal growth doesn't end high above in the clouds. Once the snowflakes reach the ground and accumulate as a blanket of snow, they begin to change.