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playing with refraction, polarization, reflection
Aug 7, 2021 11:19:24   #
Dan' de Bourgogne
 
I came up to look for some fun recently: while cleaning sunglasses in front of my laptop, I noticed strange dark spots in the glasses... I ignored that laptop screen radiates polarized light. As I understood (few hours later) what happened, I began to "play" with my circular pol' filter. Finally, I came to this set up: the laptop shows full screen a background I previously designed in 2 colours: half side left became magenta, half side right yellow. I put a mirror (borrowed from my wife) flat horizontal on the "tipboard"(?)...then a coffee cup made of glass (with some clear water inside)...screwed the pol' filter on the lens and began to shoot. Result: colorful pictures where "polarized yellow turns into violet" and polarized yellow into green after they refected in the mirror. Further, pls note the refraction from the screen into the water! Magenta becomes yellow and vice versa. Cool! Picture has been simply edited without any color change, nevertheless I saturated a bit and adjusted the histogram, adding a bit contrast.


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Aug 7, 2021 11:26:38   #
hpucker99 Loc: Anchorage, Alaska
 
Very interesting.

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Aug 7, 2021 11:32:59   #
lamiaceae Loc: San Luis Obispo County, CA
 
Dan' de Bourgogne wrote:
I came up to look for some fun recently: while cleaning sunglasses in front of my laptop, I noticed strange dark spots in the glasses... I ignored that laptop screen radiates polarized light. As I understood (few hours later) what happened, I began to "play" with my circular pol' filter. Finally, I came to this set up: the laptop shows full screen a background I previously designed in 2 colours: half side left became magenta, half side right yellow. I put a mirror (borrowed from my wife) flat horizontal on the "tipboard"(?)...then a coffee cup made of glass (with some clear water inside)...screwed the pol' filter on the lens and began to shoot. Result: colorful pictures where "polarized yellow turns into violet" and polarized yellow into green after they refected in the mirror. Further, pls note the refraction from the screen into the water! Magenta becomes yellow and vice versa. Cool! Picture has been simply edited without any color change, nevertheless I saturated a bit and adjusted the histogram, adding a bit contrast.
I came up to look for some fun recently: while cle... (show quote)


amazing!

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Aug 7, 2021 11:58:59   #
PhotogHobbyist Loc: Bradford, PA
 
Very interesting process described and intriguing abstract photographic result. I wonder if additional research and photography may occur for our viewing pleasure, or should we begin our own experimentation? Thank you for posting.

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Aug 7, 2021 13:46:25   #
joecichjr Loc: Chicago S. Suburbs, Illinois, USA
 
Dan' de Bourgogne wrote:
I came up to look for some fun recently: while cleaning sunglasses in front of my laptop, I noticed strange dark spots in the glasses... I ignored that laptop screen radiates polarized light. As I understood (few hours later) what happened, I began to "play" with my circular pol' filter. Finally, I came to this set up: the laptop shows full screen a background I previously designed in 2 colours: half side left became magenta, half side right yellow. I put a mirror (borrowed from my wife) flat horizontal on the "tipboard"(?)...then a coffee cup made of glass (with some clear water inside)...screwed the pol' filter on the lens and began to shoot. Result: colorful pictures where "polarized yellow turns into violet" and polarized yellow into green after they refected in the mirror. Further, pls note the refraction from the screen into the water! Magenta becomes yellow and vice versa. Cool! Picture has been simply edited without any color change, nevertheless I saturated a bit and adjusted the histogram, adding a bit contrast.
I came up to look for some fun recently: while cle... (show quote)


Dazzlingly creative 🌀☀️💞☀️🌀

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Aug 7, 2021 14:07:59   #
Dan' de Bourgogne
 
Good afternoon "PhotogHobbyist". thanks a lot for showing interest in this topic. I just intended to make some pictures tommorrow...thema will be to find out what can be expected from a set up where: the screen of laptop will be covered with a refringent transparent paper sheet + 2 mirrors will: one reflecting the image of laptop in the other one, but one mirror wil be covered also with a refringent transparent paper sheet...OK It will be a bit more "complicate" that he ones I already posted, but not so much...and the result can be very different. If You want, i suggest You do also some pictures with an LCD screen showin a colored background (it's leaved to You to design it to convenience) and use a pol' filter to play (perhaps through the glasses of your sunglasses) and shoot plastic transparent items...If You say Yo would have a pleasure to see more colored pictuz, so I will do You get that pleasure! Y're wellcome...

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Aug 8, 2021 06:10:54   #
cmc4214 Loc: S.W. Pennsylvania
 
I think the reason for the color change in the glass of water is because it is that, when filled with water, the glass becomes a lens. The color is not "changed" The image in the glass is reversed.

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