cold

Showing 18 posts tagged cold

The timelapsed formation of snowflakes in macrofocus by Vyacheslav Ivanov. Music: Aphex Twin - Avril 14th.

Update via Colossal: “Ivanov confirms from his home in St. Petersburg that the video is indeed genuine (non digital) and was filmed through a microscope with a ‘lot of effort and patience.’”

Read more about the science behind the snowflake’s formation at io9.

Related watching: Snow Facts Cheat Sheetice crystals form on a soap bubblejazz and tiny hailstones, and instant ice crystals.

via Kuriositas.

From The New York Times, Olympics 2014: The Science of Snowmaking

Machines make snow the same way nature does, by freezing water droplets. But they do it a few feet above the ground, rather than in the much colder conditions high in the atmosphere. Snowmaking machines employ a few thermodynamic tricks to help, but at times there is a limit to what physics can do…

…a droplet may not freeze entirely during the few seconds it takes to fall to the ground — what snowmakers call hang time.

“We’re basically making eggs,” Mr. Moulton said — icy shells around still-liquid centers.

Related snow videos: when nature handles it, How Is Snow Made?

This breathtaking video of the Aurora Borealis is not a time-lapse video — this is what it looks like in real time. It was filmed in Yellowknife, Northwest Territories, Canada by astro-photographer Kwon O Chul, and not only displays the bright northern lights and these rather magical looking glowing teepees, but also sets them to the awed, ambient sounds of tourists in the cold night air.

A related must-watch: How the Aurora Borealis is created.