Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 5:00 am
by RAEckart
More than one famous John Entwistle, I see!
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 5:39 am
by Boomer12k
Amazing...
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Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 7:37 am
by Holger Nielsen
This is the best photo of supernumenary bows that I have ever seen. What strikes me is, that the distance between the bows seems to be larger higher up, so the bows do not form circles concentric with the primary rainbow. If correct, how can that be explained?
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 7:43 am
by flasinger
I think this happens with every rainbow to some degree, just usually not visible. Some years ago I took a picture of a regular rainbow and afterwards cranked the contrast up as far as possible. Several inner rainbows appeared on the screen that were not previously visible to the eye.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 11:08 am
by Indigo_Sunrise
This is a fabulous image!
I've seen what I thought were three 'rainbows in a row' before, but then figured my eyes must be playing tricks on me. Very happy to see it has a name, and that it is an actual thing! So cool!!
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 12:20 pm
by orin stepanek
Nice article; I was fascinated by the explanation of the supernumerary rainbows! Most I ever seen was three!
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 1:41 pm
by neufer
orin stepanek wrote: ↑Tue Oct 02, 2018 12:20 pm
I was fascinated by the explanation of the supernumerary rainbows!
Most I ever seen was three!
Say "Supernumerary rainbows" three times fast.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
orin stepanek wrote: ↑Tue Oct 02, 2018 12:20 pm
I was fascinated by the explanation of the supernumerary rainbows!
Most I ever seen was three! 8-) :D
Say "Supernumerary rainbows" three times fast.
See the septuagenarian seek to say supernumerary rainbows six times in succession.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 2:52 pm
by suicidejunkie
Holger Nielsen wrote: ↑Tue Oct 02, 2018 7:37 am
This is the best photo of supernumenary bows that I have ever seen. What strikes me is, that the distance between the bows seems to be larger higher up, so the bows do not form circles concentric with the primary rainbow. If correct, how can that be explained?
When I look closely and trace it down, the first three thin bows at the top merge into two brighter, thicker bows near the bottom.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Holger Nielsen wrote: ↑Tue Oct 02, 2018 7:37 am
This is the best photo of supernumenary bows that I have ever seen. What strikes me is, that the distance between the bows seems to be larger higher up, so the bows do not form circles concentric with the primary rainbow. If correct, how can that be explained?
When I look closely and trace it down, the first three thin bows at the top merge into two brighter, thicker bows near the bottom.
The smaller the droplets the greater the separation.
Presumably the droplets were smaller higher above the ground.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 3:09 pm
by starsurfer
Thor would be proud of this photo!
Click to play embedded YouTube video.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 3:51 pm
by De58te
starsurfer wrote: ↑Tue Oct 02, 2018 3:09 pm
Thor would be proud of this photo!
See Thor by the seashore seeing the supernumerary rainbow thither three times.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 4:31 pm
by Guest
Jersey Shore is in PA
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Tue Oct 02, 2018 7:16 pm
by Hubert_vh
Holger Nielsen wrote: ↑Tue Oct 02, 2018 7:37 am
This is the best photo of supernumenary bows that I have ever seen. What strikes me is, that the distance between the bows seems to be larger higher up, so the bows do not form circles concentric with the primary rainbow. If correct, how can that be explained?
The non-concentric arcs also caught my attention. The website below has detailed explanations of many rainbow features. In particular, figure 8.11 shows at what angle colors end up as a function of drop size. For the supernumerary arcs this dependence is particularly strong. So my guess is that in today's photo, the drop size varies with altitude. https://www.usna.edu/Users/oceano/rayle ... ter_8.html
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Wed Oct 03, 2018 3:42 am
by Cousin Ricky
suicidejunkie wrote: ↑Tue Oct 02, 2018 2:52 pm
When I look closely and trace it down, the first three thin bows at the top merge into two brighter, thicker bows near the bottom.
I think what you are perceiving as two separate rainbows at the top is really just the outer bow. The violet streak down the middle is really just the violet end of the outer bow, but the transition from green to blue to violet is just hard to see against the blue sky.
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Re: APOD: Supernumerary Rainbows over New Jersey (2018 Oct 02)
Posted: Wed Oct 10, 2018 1:44 pm
by RJN
Guest wrote: ↑Tue Oct 02, 2018 4:31 pmJersey Shore is in PA
The image was taken over the Jersey Shore, meaning the Atlantic coast of New Jersey. The video linked, though, was to the PA borough, and so this link has now been removed from the main NASA APOD. Also "the" was added to be more clear. Thanks for your help, and we apologize for the oversight. - RJN