Olympus-OM
[Top] [All Lists]

Re: [OM] Rainbows & polarizers, was: Desks, film and jpgs

Subject: Re: [OM] Rainbows & polarizers, was: Desks, film and jpgs
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sat, 30 May 2009 12:07:40 -0400
Thanks, Mark.

Chuck Norcutt

Mark Marr-Lyon wrote:
> The internal reflection inside the raindrop happens near Brewster's angle,
> which makes the reflected light polarized.  The polarization angle changes
> around the rainbow, so the polarizer won't make all of the rainbow disappear
> at once.
> See
> http://www.polarization.com/rainbow/rainbow.html
> http://en.wikipedia.org/wiki/Brewster's_angle
> 
> Mark
> 
> On Sat, May 30, 2009 at 7:14 AM, Chuck Norcutt <
> chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> 
>> Can somebody explain this rainbow effect?  AFAIK, rainbows are seen at
>> 180 degrees from the sun.  Polarization is at maximum 90 degrees from
>> the sun and at minimum 180 degrees from the sun.  It would seem to me
>> that a polarizer should have little or no effect on a rainbow.  Have I
>> got it wrong?  How?
>>
>> Chuck Norcutt
>>
>> Wayne Harridge wrote:
>>> I didn't know a polariser removed rainbows.  It will probably enhance the
>>> rainbow if you rotate it 90 degrees.
>>>
>>> ...Wayne
>>>
>>> Wayne Harridge
>>> http://lrh.structuregraphs.com/
>>>
>>>
>>>> -----Original Message-----
>>>> From: Mike Lazzari []
>>>> Sent: Saturday, 30 May 2009 1:51 AM
>>>> To: 1
>>>> Subject: Re: [OM] Desks, film and jpgs
>>>>
>>>> A white balance disk would be useful for mixed lighting indoors and of
>>>> course removing that annoying color cast of sunrise and sunset. Add it
>>>> to your bag with the polarizer which is useful for removing rainbows :-
>>>> )
>>>>
>>>> Mike
>>>> --
>>>> _________________________________________________________________
>>>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>>>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>>>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>> --
>> _________________________________________________________________
>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>
>>
-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz