Go Back   Freethought Forum > The Marketplace > The Sciences

Reply
 
Thread Tools Display Modes
  #76  
Old 01-23-2016, 01:26 PM
lpetrich's Avatar
lpetrich lpetrich is offline
Member
 
Join Date: Jul 2004
Location: Lebanon, OR, USA
Gender: Male
Posts: DXVIII
Default Re: Atmospheric optical phenomena

I've seen halos around the Sun, halos with sundogs, a few times when the Sun was low in the sky in winter. I also once saw this:

Here is a UFO that I once saw. I was traveling by airplane from Newark NJ to Ithaca NY in the winter, and I saw on the clouds a whitish spot that looked like a reflection off of a glass or clear-plastic pane. But there was no such pane in evidence, and my location was an unlikely one for such a pane. It would have to be huge. The spot sometimes flickered, but usually stayed constant in brightness. An extraterrestrial spacecraft following my plane? I decided that the clouds below my plane had an odd property: they had specular reflection in addition to diffuse reflection. I later found out that this was due to ice crystals in the clouds getting oriented as they fell. They have hexagonal symmetry, allowing them to have different optical properties in the horizontal and vertical directions. Others have seen this effect, and photographed it, and it is called a "subsun".

The halos and sundogs are also due to ice crystals.
Reply With Quote
Thanks, from:
ceptimus (01-23-2016), Corona688 (04-14-2018), Dingfod (01-23-2016), Janet (01-29-2016), Miisa (01-23-2016), slimshady2357 (01-23-2016), SR71 (11-23-2016)
  #77  
Old 01-23-2016, 03:38 PM
Miisa's Avatar
Miisa Miisa is offline
Consummate snowball artist
 
Join Date: Aug 2005
Location: Probably not where you think
Gender: Female
Posts: MVCDLXXIX
Default Re: Atmospheric optical phenomena

It was pushing -30C yesterday morning as I was driving to work, and saw the most amazing collection of light pillars along the way. Unfortunately I was in no position to take pictures.

Saw some of them bunched separately high above the horizon some weeks ago, and it took me ages to figure out what they were at first. Looked like a city in the sky. That picture turned out much too blurry though. :sadcheer:
__________________
:roadrun:
Reply With Quote
Thanks, from:
ceptimus (01-23-2016), Dingfod (01-23-2016), Janet (01-29-2016), JoeP (01-23-2016), Pan Narrans (01-23-2016)
  #78  
Old 01-23-2016, 10:02 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
more of a before rehab friend
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXCLXXXI
Images: 66
Default Re: Atmospheric optical phenomena



Found on Reddit. How auroras do.
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
Angakuk (11-23-2016), BrotherMan (01-23-2016), ceptimus (01-24-2016), Crumb (01-23-2016), curses (01-30-2016), Dingfod (01-23-2016), Janet (01-29-2016), JoeP (01-23-2016), Kamilah Hauptmann (11-23-2016), The Lone Ranger (11-24-2016)
  #79  
Old 11-23-2016, 03:13 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena

Fog bow photographed over Rannoch Moor, Scotland, last Sunday.

__________________
Reply With Quote
Thanks, from:
Angakuk (11-23-2016), Crumb (11-23-2016), Dingfod (11-25-2016), Janet (12-09-2016), JoeP (11-23-2016), Kamilah Hauptmann (11-23-2016), Pan Narrans (11-23-2016), specious_reasons (11-23-2016), SR71 (11-23-2016), The Lone Ranger (11-24-2016), Vivisectus (11-23-2016)
  #80  
Old 11-23-2016, 03:28 PM
Vivisectus's Avatar
Vivisectus Vivisectus is offline
Astroid the Foine Loine between a Poirate and a Farrrmer
 
Join Date: Feb 2011
Gender: Male
Posts: VMMCCCLIII
Blog Entries: 1
Default Re: Atmospheric optical phenomena

what an awesome piccy - did you take it?
Reply With Quote
Thanks, from:
ceptimus (11-23-2016)
  #81  
Old 11-23-2016, 03:36 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena

No No. I wish I had. It was on the BBC website today. Apparently the photographer was Melvin Nicholson.
__________________
Reply With Quote
Thanks, from:
Vivisectus (08-08-2017)
  #82  
Old 08-08-2017, 03:40 PM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena

Rare pink rainbow spotted over England.



Apparently it's just a regular rainbow that happened at sunset.
__________________
Reply With Quote
Thanks, from:
Corona688 (04-14-2018), Crumb (08-08-2017), JoeP (08-08-2017), Pan Narrans (08-08-2017)
  #83  
Old 08-08-2017, 04:01 PM
JoeP's Avatar
JoeP JoeP is online now
Wielder of the secret flame of spamhammer
 
Join Date: Jul 2004
Location: England/Miisaland
Gender: Male
Posts: XXVCLV
Images: 18
Default Re: Atmospheric optical phenomena

I assume there's a unicorn at the end of it with a pot of gold body paint.
__________________

:roadrun:
Free thought! Please take one!

:unitedkingdom:   :southafrica:   :unitedkingdom::finland:       :eur:       :m&ms::m&ms::twix::twix: (rotated 180°):m&ms::m&ms:
Reply With Quote
Thanks, from:
Ensign Steve (08-09-2017), Zehava (08-10-2017)
  #84  
Old 04-13-2018, 08:51 AM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
more of a before rehab friend
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXCLXXXI
Images: 66
Default Re: Atmospheric optical phenomena

It started raining a little before sunset at work yesterday, and we got this bad-ass rainbow! It went all the way from horizon to horizon, we couldn't even fit the whole thing in one photo.

rainbow.jpg rainbow_full.JPG

There was even a little shadow of a double rainbow on one end, and I learned 2 things:
- the second rainbow is a mirror of the first one :stunned:
- the Chinese have 2 different words for the 2 different rainbows.

rainbow_double.jpg

:prettycolors:
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
beyelzu (04-13-2018), BrotherMan (04-13-2018), But (12-04-2018), ceptimus (04-13-2018), Dingfod (04-24-2018), JoeP (04-13-2018), Kamilah Hauptmann (04-13-2018), slimshady2357 (04-13-2018)
  #85  
Old 04-13-2018, 11:23 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena

One thing with double rainbows that many people don't see till you point it out to them is that the sky between the two rainbows normally looks darker than the sky inside the inner one. The sky outside the outer band is also usually brighter than the sky between the bands - though not as bright as the sky inside the inner band.

It's usually very obvious once you know to look for it - but most people concentrate on the pretty colored bands and don't notice how the internal reflections within the raindrops move the light around in the parts of the sky without the colors.
__________________
Reply With Quote
Thanks, from:
beyelzu (04-13-2018), BrotherMan (04-13-2018), Dingfod (04-24-2018), Dragar (12-04-2018), JoeP (04-13-2018), Kamilah Hauptmann (04-13-2018), Pan Narrans (04-13-2018), slimshady2357 (04-13-2018)
  #86  
Old 12-04-2018, 11:51 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena



Triple rainbow photographed in Gloucestershire village.

Seems a bit fishy to me as one of the rainbows isn't concentric with the other two, and its colours are the same way round as the main bright inner rainbow. I wonder if it's just the rainbow due to a "second sun" - for example if the sun was reflecting off some greenhouse roofs or other large reflective structure behind and a bit to one side of the photographer.
__________________

Last edited by ceptimus; 12-04-2018 at 12:02 PM.
Reply With Quote
Thanks, from:
But (12-04-2018), Crumb (12-04-2018), Dragar (12-04-2018), Ensign Steve (12-04-2018), JoeP (12-04-2018), slimshady2357 (12-04-2018), SR71 (12-04-2018)
  #87  
Old 12-04-2018, 12:48 PM
JoeP's Avatar
JoeP JoeP is online now
Wielder of the secret flame of spamhammer
 
Join Date: Jul 2004
Location: England/Miisaland
Gender: Male
Posts: XXVCLV
Images: 18
Default Re: Atmospheric optical phenomena

Quote:
Originally Posted by ceptimus View Post

Seems a bit fishy to me as one of the rainbows isn't concentric with the other two, and its colours are the same way round as the main bright inner rainbow. I wonder if it's just the rainbow due to a "second sun" - for example if the sun was reflecting off some greenhouse roofs or other large reflective structure behind and a bit to one side of the photographer.
British rainbow expert claims Earth has two suns!
__________________

:roadrun:
Free thought! Please take one!

:unitedkingdom:   :southafrica:   :unitedkingdom::finland:       :eur:       :m&ms::m&ms::twix::twix: (rotated 180°):m&ms::m&ms:
Reply With Quote
Thanks, from:
BrotherMan (12-04-2018), Ensign Steve (12-04-2018), Pan Narrans (12-05-2018), slimshady2357 (12-04-2018), SR71 (12-04-2018)
  #88  
Old 12-04-2018, 02:37 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
more of a before rehab friend
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXCLXXXI
Images: 66
Default Re: Atmospheric optical phenomena

Just 2 days ago I was wondering if a triple-rainbow is possible. Still unsure. :scratch:
__________________
:kiwf::smurf:
Reply With Quote
  #89  
Old 12-04-2018, 02:55 PM
But's Avatar
But But is online now
This is the title that appears beneath your name on your posts.
 
Join Date: Jun 2005
Gender: Male
Posts: MVDCXIV
Default Re: Atmospheric optical phenomena

Quote:
Originally Posted by ceptimus View Post
Triple rainbow photographed in Gloucestershire village.

Seems a bit fishy to me as one of the rainbows isn't concentric with the other two, and its colours are the same way round as the main bright inner rainbow. I wonder if it's just the rainbow due to a "second sun" - for example if the sun was reflecting off some greenhouse roofs or other large reflective structure behind and a bit to one side of the photographer.

Yes, that's definitely something else. It's much too bright, a third rainbow is even fainter than the second one and this thing, whatever it is, is in the wrong place. It should be 40 degrees from the Sun, which is nearly the opposite direction. It's probably a twinned rainbow I guess, it pretty much matches the description.
Reply With Quote
Thanks, from:
ceptimus (12-04-2018), Crumb (12-04-2018), Ensign Steve (12-04-2018), SR71 (12-04-2018)
  #90  
Old 12-04-2018, 03:03 PM
But's Avatar
But But is online now
This is the title that appears beneath your name on your posts.
 
Join Date: Jun 2005
Gender: Male
Posts: MVDCXIV
Default Re: Atmospheric optical phenomena

Quote:
Originally Posted by Ensign Steve View Post
Just 2 days ago I was wondering if a triple-rainbow is possible. Still unsure. :scratch:

Third, fourth, etc. rainbows are there every time, it's just that each one gets fainter and they are in the opposite direction, so they are even harder to see against the glare of the Sun and scattered sunlight.
Reply With Quote
Thanks, from:
ceptimus (12-04-2018), Ensign Steve (12-04-2018), SR71 (12-04-2018)
  #91  
Old 12-04-2018, 07:31 PM
SR71's Avatar
SR71 SR71 is offline
Stoic Derelict
 
Join Date: Sep 2011
Location: The Dustbin of History
Gender: Male
Posts: VCDLXVIII
Images: 2
Default Re: Atmospheric optical phenomena

It's possible for non graded thermal layers in the atmosphere to act as wave guides for RF and visible light. Seems unlikely, but possible that light is being introduced at a different incidence to the droplets?

I think but has it though, it's just simultaneous reflection rainbow and double rainbow.

Just this summer, I saw my first ever double rainbow. I wonder if this type of thing will become increasingly common as the atmosphere warms. I think air can hold 6% more vapor per additional degree celsius or something like that. Seems like that would increase the likelihood of refraction.
__________________
Chained out, like a sitting duck just waiting for the fall _Cage the Elephant
Reply With Quote
  #92  
Old 12-04-2018, 07:38 PM
SR71's Avatar
SR71 SR71 is offline
Stoic Derelict
 
Join Date: Sep 2011
Location: The Dustbin of History
Gender: Male
Posts: VCDLXVIII
Images: 2
Default Re: Atmospheric optical phenomena

Quote:
Originally Posted by JoeP View Post
Quote:
Originally Posted by ceptimus View Post

Seems a bit fishy to me as one of the rainbows isn't concentric with the other two, and its colours are the same way round as the main bright inner rainbow. I wonder if it's just the rainbow due to a "second sun" - for example if the sun was reflecting off some greenhouse roofs or other large reflective structure behind and a bit to one side of the photographer.
British rainbow expert claims Earth has two suns!
You didn't know that? :giggle:
__________________
Chained out, like a sitting duck just waiting for the fall _Cage the Elephant
Reply With Quote
  #93  
Old 12-04-2018, 10:59 PM
But's Avatar
But But is online now
This is the title that appears beneath your name on your posts.
 
Join Date: Jun 2005
Gender: Male
Posts: MVDCXIV
Default Re: Atmospheric optical phenomena

Either they edited the article or I didn't really read it.

Quote:
Originally Posted by BBC
So what of the third bow? This is known as a reflection bow. Whilst rare, a reflection rainbow mainly occurs when the sun is lower on the horizon behind you (i.e. late afternoon/evening) and when you are near to a large body of water, such as a river, lake or sea inlet.

Sunlight reflects off the surface of the water and through raindrops, but at a different angle to the direct beam of sunlight.
That's probably what it is, it matches the geometry too.

Reflection rainbows formation
Reply With Quote
Thanks, from:
ceptimus (12-05-2018), Crumb (12-05-2018), SR71 (12-05-2018), Stephen Maturin (12-09-2018)
  #94  
Old 12-05-2018, 01:14 AM
ceptimus's Avatar
ceptimus ceptimus is offline
puzzler
 
Join Date: Aug 2004
Location: UK
Posts: XVCDIV
Images: 28
Default Re: Atmospheric optical phenomena

The BBC have edited the article at least twice. There was no mention of reflection to begin with.
__________________
Reply With Quote
Thanks, from:
But (12-05-2018), mickthinks (12-05-2018), SR71 (12-05-2018), Stephen Maturin (12-09-2018)
  #95  
Old 12-09-2018, 02:20 AM
Stephen Maturin's Avatar
Stephen Maturin Stephen Maturin is offline
Nutty Legionnaire Provost
 
Join Date: Jul 2004
Location: Juggalonia
Posts: VMMCCCXXIII
Default Re: Atmospheric optical phenomena

Quote:
Originally Posted by ceptimus View Post
There was no mention of reflection to begin with.
Perhaps it wasn't close enough or bright enough to be seen. Them molecules of light are tricky.
__________________
"We can have democracy in this country, or we can have great wealth concentrated in the hands of a few, but we can't have both." ~ Louis D. Brandeis

"Psychos don't explode when sunlight hits them, I don't give a fuck how crazy they are." ~ S. Gecko

"What the fuck is a German muffin?" ~ R. Swanson
Reply With Quote
Thanks, from:
But (12-09-2018)
Reply

  Freethought Forum > The Marketplace > The Sciences


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

 

All times are GMT +1. The time now is 12:39 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Page generated in 0.28844 seconds with 16 queries