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Does the shape of the water particles affect the appearance of the rainbow?
It's not the shape of the water particles; they're all spherical.
The larger raindrops are slightly flattened as they fall
Quote from: LeeE on 12/07/2009 13:03:21It's not the shape of the water particles; they're all spherical. The bigger the drops are the more they deviate from spherical ...QuoteThe larger raindrops are slightly flattened as they fall http://www.atoptics.co.uk/rainbows/bowim43.htm
It's not the shape of the water particles; they're all spherical. No, it's the shape of the mist/spray; with a bit of practice you can make a 'U' shaped spray, for example, and with special nozzles you can make different shaped ones.
I'm not disputing the mechanism of the optics, which I do understand, and what you've said is perfectly true for a uniform mist. The only point I was trying to make is that by making a non-uniform shaped mist you can get some strange shaped rainbows. I don't need to perform the 'experiment' again (I was washing a car using a hose without a nozzle and used my finger/thumb to make a jet in an effort to dislodge some crud from beneath the wheel arches) as I was so intrigued by the effect that I was distracted for a good five minutes, trying different spray shapes and orientations to see how the appearance and shape of the rainbows changed.