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-   -   8 Rainbows simultaneously in Pennsylvania, Beautiful vision of Gods promise to Noah (http://message.snopes.com/showthread.php?t=94604)

A Turtle Named Mack 03 September 2016 09:09 PM

8 Rainbows simultaneously in Pennsylvania, Beautiful vision of Gods promise to Noah
 
http://https://www.facebook.com/phot...2027327&type=3
https://www.facebook.com/photo.php?f...2027327&type=3
I have seen double rainbows, and once even a triple, but they have always been concentric. This does not seem possible to me, unless possibly created by very local conditions, like steam rising just behind the photographer. Even so, if the only light source is the sun, it seems they could not cross this way. Any ideas?

ETA: I don't seem to be able to enter a link that shows the pic. Sorry

ASL 03 September 2016 09:38 PM

I think I found a link!

http://www.snopes.com/photograph-shows-eight-rainbows/

;)

erwins 03 September 2016 10:22 PM

The Snopes article doesn't have the 8-rainbow photo. This seems to have the photo in question: http://lehighvalleywithlove.com/post...hoto-gets-some

Also, while looking for that, I came across an article that seems to have been created at least partly by running the Snopes article through some sort of thesaurus program. (http://www.coolrocketry.com/eight-ra...-pennsylvania/)

A Turtle Named Mack 04 September 2016 01:10 AM

Erwins' first link has the photo I was trying to link.

Crius of CoH 04 September 2016 01:35 AM

Here's an xkcd "What If?" that talks a bit about rainbows, and by inference indicates the near-certainty that 8 rainbows is photoshopped or otherwise staged.

Gutter Monkey 04 September 2016 06:47 AM

From reading the Snopes article it looks like it's talking about the same photo, since the original photo it links to is obviously the source photo for Mac's image as well.

Rainbows are always a reflection of sunlight against raindrops so every rainbow you ever see will be in the opposite direction of the sun from the observer's point of view. Note also that different observers in different positions will also see the rainbow in a correspondingly different position, which is why rainbows seem to 'follow' you when you're in a moving vehicle.

If you see two rainbows in the sky then they're typically exactly inside one another, just larger concentric circles with the same axis. The quadruple rainbows in the Snopes link aren't concentric because two of them are caused by the sun reflecting off a lake or another large flat reflective surface so the angle is somewhat different. The eight rainbows in Mac's image have wildly different axes which would only happen if there were several different suns in the sky, or perhaps giant mirrors about a mile wide being hung in the lower atmosphere.

Crius of CoH 04 September 2016 12:50 PM

Quote:

Originally Posted by Gutter Monkey (Post 1927471)
The eight rainbows in Mac's image have wildly different axes which would only happen if there were several different suns in the sky, or perhaps giant mirrors about a mile wide being hung in the lower atmosphere.

The xkcd What If specifically talks about what rainbows would be like on worlds with multiple suns. It is, in fact, what would rainbows look like on Tatooine (Luke Skywalkers two-sunned home world in Star Wars).


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