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8 photometeors w /图片的例子

编辑:admin 日期:2018-09-11

The response to the awesome phenomena article was amazing, I大发快三单双破解器’;d really like to thank you all! I was really surprised to see how many of you actually contributed and sent me more pictures of awesome phenomena, so I’;ll definitely do a follow up in a few days, mentioning who gave me the ***, so keep an eye out guys。 Meanwhile, Daniel M。 gave me a small list of phenomena called ‘;photometeors’;, and after doing a little research, I have to say they’;re definitely worth looking into。

A Photometeor is a luminous phenomenon produced by light from the Sun or the Moon, whether it’;s produced diffraction, interference, reflection or refraction。 They can be observed either in or on clouds, in hydrometeors or lithometeors or in less thin air。

Halo

Photo by Titoreds。

The Halo includes meteorological phenomena consisting of colored or white arcs, generally surrounding the Sun or the Moon, formed by light refraction in the crystals in the cirrus clouds。 There are many types of halos, and the shape and arrangement of the crystals determines the type of halo seen, with the parhelia and the 22° halo being by far the most common。

Nepal, Himalayas。 Photo Anton Yankovyi

The word halo comes from Greek and it was used to define a sun or moon disk, or a circular shield。 In the days before meteorological predictions, halos were a very good indicator that the weather was about to change。When produced by the Sun’;s light, the halo may have a number of colours, but halos produced by light reflected by the moon are always white。

 ;

Light pillars

Light pillars are also produced by ice crystals, just like halos, but they come as a result of only reflection, not refraction too。 The result in this case is…; well the name pretty much says it all。

Photo by Joseph N Hall。

They can be formed by the sun’;s light or moon’;s reflected light, but they can also be formed by streetlights; howeever in this case the result is much less spectacular。

Photo by Christoph Geisler。

What happens is the light is ‘;trapped’;: it reflects on ice crystals with near horizontal parallel planar surfaces。 As you can see, the results are just amazing。