In order to study this, they had to grow snowflakes in laboratory conditions. It was not an easy thing to figure out how to do. On his Snowcrystals page, physicist Kenneth G. Libbrecht show you how it's done.
There are many ways to grow snowflakes, but my favorite starts with something called a vapor diffusion chamber. This is essentially nothing more than an insulated box that is kept cold on the bottom (say -40C) and hot on the top (say +40C). A source of water is placed at the top, and water vapor diffuses down through the box, producing supersaturated air. The cold, supersatured air at the center of the chamber is ideal for growing ice crystals.
While working with this diffusion chamber, we rediscovered a wonderful technique for growing synthetic snow crystals that was first published in 1963 by meteorologist Basil Mason and collaborators . One starts by putting a wire into the diffusion chamber from below, so that small ice crystals begin growing on the wire's tip. Then apply a high voltage to the wire, say +2000 volts, and voila -- slender ice needles begin growing from the wire.
Repeating the word “fuck” actually can reduce your experience of pain, according to a new study by Keele University researchers. The psychologists ran an experiment in which subjects underwent a cold pressor test, a common method to pain threshold and tolerance by immersing your hand in freezing cold water for a minute. (See above video […]
Floating out of your body and looking down on it. The story of your life flashing by before your eyes. Seeing a bright light at the end of a dark tunnel. These are just two of the most common experiences that people report after a near-death experience (NDE). For some people, NDEs are a transformative […]
First, they were all about serving a protective necessary function. But now, about 10 weeks after the explosion of the COVID-19 outbreak, face masks are beginning to serve a different role. Just like all the fashion accessories that came before them, face masks are now showing off a little piece of ourselves to the everyday […]
Promoting products is almost nothing like it was back in the Mad Men days. In fact, the digital landscape has changed the ad game so much that it barely even resembles early Grey’s Anatomy days anymore. Marketing a product digitally isn’t about the right ad slogan or color scheme. It’s about crafting the narrative around […]
Every once in a while, we see a new product come along that’s so versatile and elegantly simple that it’s strange no one’s ever gone there before. Portable lights themselves aren’t new, but there’s something about the MOGICS Coconut Light that’s so seamlessly well-designed and adaptable that it feels startlingly original. The Coconut is basically […]