Rainbow wow: Anti-crepuscular rays & rainbow!

Rainbowwow by Jamie A. MacDonald

Rainbowwow by Jamie A. MacDonald

June is Pride Month, which means that a lot of people are getting mad about rainbows right now. As a wholehearted supporter of the right for people to love, marry & be who they choose to be, that seems really silly but I guess that’s where we are.

I’m sharing these photos because Michigan in Pictures wholeheartedly supports the rights of people to love & marry who they choose, but also because a whole month of rainbows gives me a chance to post about how cool rainbows are starting with this shot of a rainbow with anti-crepuscular rays that Jamie took!

Anti-Crepuscular Rays and Rainbow by Jamie A. MacDonald

Anti-Crepuscular Rays and Rainbow by Jamie A. MacDonald

My go-to rainbow resource for years has been Atmospheric Optics, and they explain that wile crepuscular rays appear to converge on the sun, anticrepuscular or antisolar rays converge in the opposite direction and you must have your back to the sun or sunset point to see them:

They appear to converge towards the antisolar point, the point on the sky sphere directly opposite the sun. Like crepuscular rays they are parallel shafts of sunlight from holes in the clouds and their apparently odd directions are a perspective effect. Think of a long straight road, it converges towards the horizon but turn around and it also converges to the opposite horizon. Crepuscular and anticrepuscular rays behave in the same way. Anticrepuscular rays are not rare but they must be sought carefully. When ordinary crepuscular rays are visible, turn around and search for their opposite numbers.

Jamie has a lot of great shots in his Stormy Weather gallery on Flickr. You can follow him on Instagram and see his portfolio and learn more about Jamie right here!

More rainbows on Michigan in Pictures!

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5 thoughts on “Rainbow wow: Anti-crepuscular rays & rainbow!

  1. A rainbow was made by God as a covenant between God & man after the flood.  It has nothing to do with the queer alphabet soup group!

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    1. My brother in Science, rainbows are formed when light from the sun is scattered by water droplets like raindrops or fog through a process called refraction that existed long before God made a weird promise about not killing all humans in one particular way. I do not follow your religion, and your religion doesn’t “own” rainbows. Have a blessed day taking your nonsense elsewhere

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      1. And I don’t follow your science.  A beautiful thing like a rainbow should not be used as a symbol to represent these sick people, and the sick things they do!  You’ll find out.

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  2. I’m hopeful that we’ve both learned a lesson here. You’ve learned that this blog is science based and I’ve learned that there’s some bigots who I haven’t driven off yet.

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  3. Two bows for the price of one says Jamie. What a cool picture and all the other rainbows that are here too. That fresh with raindrops daisy is beautiful too. I can’t remember the last rainbow I saw … looks like all the rain over the next few days should give us a great opportunity to look for one. Thanks for the science lesson too Andrew.

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