Hair ice, also known as ice wool or frost beard, is a type of ice that forms on dead wood and takes the shape of fine, silky hair. [1] It is somewhat uncommon, and has been reported mostly at latitudes between 45 and 55 °N in broadleaf forests .

2015年7月27日 · After sampling logs for fungus they determined that one kind consistently showed up on wood that produced hair ice, a species called Exidiopsis effusa. Experiments in the lab revealed how this...

Hair ice is most often seen on a winter’s morning, having grown the previous night on rotting wood. It only occurs when several other factors are just right: moisture, atmospheric conditions …

2019年12月16日 · Ice crystals are formed at below-freezing temperatures, but they are later 'sculpted' into fine strands of hair by a resident fungus known as Exidiopsis effusa. Exactly how it manages this is still a mystery, but scientists think it might have to do with a 'recrystallisation inhibitor' provided by the fungus.

2024年12月12日 · What Is Hair Ice? Hair ice is collection of very thin strands of ice growing on dead hardwood branches and logs. It is bright silvery-white, smooth and has a silky, shiny appearance. The formations are usually found in dense bunches and may grow straight out or form intricate and beautiful waves and curls.

2015年7月23日 · “Hair ice” is the term given to ice of an odd texture found growing on rotten branches and dead wood that resembles fine crystalline hair. It only grows in very specific environments – humid,...

2015年7月27日 · It looks like glistening angel hair pasta growing out of rotten tree branches, but scientists know it as "hair ice." It was first identified in 1918 by Alfred Wegener, also responsible for contributing to the understanding of continental drift.

2023年2月1日 · Dead wood can produce 'hair ice' with the help of a certain fungus that shapes the ice into fine hairs. Hair ice was first observed by continental drift discoverer Alfred Wegener in 1918....

2025年1月29日 · If you're lucky, you may have spotted "hair ice" out in the wild. Early records of the phenomenon, also known as angel hair, date back over a century. As science and climate specialist Darius...

2022年12月6日 · Hair ice expands to the surface when the outermost layer of bark has broken loose, exposing intermediate sections and filling the void created by the channels in the wood, which only extend so far below the bark.