![]() When the field changes, they all turn, so different ones are pointed at you, and ones that were pointed at you are now turned away. ![]() Think of them like little flashlights, some pointed at you, some away. In this case, some of the ice crystals are bending light toward the camera, and when the field snaps they rearrange themselves. These all depend on the angle between you, the Sun, and the orientation of the crystal in between. When they float in the air you get all sorts of astounding and beautiful formations like sun dogs So why does it look like the entire shape is changing? That's because ice crystals can act like little prisms, bending light when it passes through them (or they can act like mirrors, with light reflecting off their flat surfaces). The ice crystals change their orientation suddenly when that happens. Then the field snaps (maybe due to lightning releasing the energy) and then reforms. So all the ice crystals above that cloud top are aligned one way in the field. When placed in an electric field, the charges feel a force on them, and align themselves along the field. The outer surface of ice crystals can hold a static electric charge, similar to what happens when you rub a glass rod with a cloth, or rub a balloon on your hair and stick it to the wall. Then this just keeps happening over and over.Īha! I hadn't thought of that. Then there is a discharge in the cloud, and the field collapses momentarily, and the crystals begin to realign again. So what you are seeing is sunlight reflecting off ice crystal faces that are constantly being oriented by the developing electric field just above the top. The answer lies in this: ice crystals, especially long needles, tend to become aligned with the ambient electric field. , who was able to identify this phenomenon. Joel had sent the video to Walter Lyons, a meteorologist from WeatherVideoHD I sent him the video, and sure enough a short while later he had a reply for me. Joel is a meteorologist who runs websites like Open Snow But I had no clue how that would make the cloud appear to dance like that! As it happens, by coincidence, I met Joel Gratz at the TEDxBoulder talk ![]() When that happens, the electric field resets itself, and starts to store up energy again. Clouds can carry huge electric potentials - essentially, the ability to move charges around - and that stored energy can be suddenly released, creating lightning. Assuming the video is real, I had a sneaky suspicion it had to do with the electric currents generated inside the cloud, the same currents that create lightning. But it's clear that's not what's going on the video is smooth with no transitions. Starting at 9 seconds in, that little wisp suddenly snaps into a new shape, as if someone had stopped the video, waited for the cloud to change, then started up the video again. Here's a little batch of songs i made last year with the intent of turning them into an album, but they never got past their current very lo-fi state.Did you see it? If it helps, the picture here shows you where to look. See the tracklisting below, where you can also find the band's tweet.Ĭloud Nothings' latest record was 2018's Last Building Burning. The songs on the new demo release are available to download for free via WeTransfer. "Here's a little batch of songs I made last year with the intent of turning them into an album, but they never got past their current very lo-fi state," the band wrote in a tweet. All the songs are roughly mixed and run less than three minutes each. The new 10-track surprise effort arrives today for free and comprises material from an abandoned project. Published Cloud Nothings have shared a new album of demos titled Enemy at Home.
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