![]() In the measurements of Pruppacher and Beard, drops of the equivalent spherical radius a 0 0.54.5 mm (1 to 9 mm diameter) were found to have a linearly decreasing axis ratio () as a function (1) 1.030 0.124 a 0. ![]() It's like with the other one it did slow scans, and this time it does quick scans that sometimes record the same raindrop in two places. The equilibrium shape of raindrops is most simply described by the axis ratio, a ratio of the maximum vertical and horizontal chords. Water has so much surface tension that you won't see a raindrop tail. That's because the air bubbles didn't have much surface tension at all. I'd turn them over and air bubbles would travel to the top in raindrop shapes. I remember looking at thick shampoo in transparent bottles. Though there could be something I haven't thought of. So my guess is that those are the shapes. And I can't think of any interactions that would make a difference. initial differences in particle (condensation nuclei) size. Raindrops are different sizes for two primary reasons. The smaller drops are the ones that didn't run into as many droplets. Called mizu shingen mochi in Japanese, the raindrop cake originated in Yamanashi. Without refrigeration, the dessert loses its shape in about 30 minutes. It is virtually calorie-free and has a fresh, subtle taste. The only other force that I know is involved is electric charge, and I'd expect that to be mostly inside the clouds and not for large raindrops on the way down. When the drops finally reach the ground, the biggest drops will be the ones that bumped into and coalesced with the most droplets. raindrop cake, delicate gelatinous dessert of Japanese origin that is made of spring water or mineral water and agar powder and that derives its name from its large raindrop shape. So if inside real clouds, the only forces involved are gravity, air pressure, and surface tension, and the water droplets don't interact with each other, then these are the only shapes they'll have. With a vertical wind tunnel blowing fast enough to keep water droplets stationary, they make the shapes he describes. The experimental evidence supports JEBs claims. I can imagine it, but I didn't look long enough to see whether it was there. So you might see something that wasn't just a random raindrop, but something more, that lasted longer, that your eye might connect? You could get some big blobs that followed each other, the leader breaking up the air resistance some for later ones? But maybe some of it would tend to stay together some. Air resistance would quickly spread it out. Imagine you were in a small airplane and you poured a cup of water. Maybe they were bright because they were closer, so they were just longer and wider lines.īut I'd consider the possibility that maybe sometimes you get something that isn't an individual raindrop. I thought while looking at it that some particularly bright ones looked more like sticks than the others, but I didn't find the frames they were in. If you see a series of frames like that, they're going to look like long lines. ![]() Maybe some of them are farther away than others, and that makes the length difference. I think that's how far they fall while one frame is being taken. When I look at individual frames, raindrops look like little white lines about 10 to 20 times as long as they're wide.
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