Commons:Featured picture candidates/File:Photoelasticity - Clear CD case centre.jpg

File:Photoelasticity - Clear CD case centre.jpg, featured

Voting period is over. Please don't add any new votes.Voting period ends on 21 Mar 2017 at 21:11:59 (UTC)
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Featured picture candidates/File:Photoelasticity - Clear CD case centre.jpg Commons:Featured picture candidates/File:Photoelasticity - Clear CD case centre.jpg

• Category: Commons:Featured pictures/Objects
•  Info The centre of a clear CD case (remember them?) The plastic is birefringent and demonstrates internal stress as coloured patterns (photoelasticity) when photographed using cross polarisation. The vertical black line at the bottom is a tiny crack that developed when the CD was removed from the case. The colours have not been enhanced in post-processing (just a modest increase in contrast). All by me. -- Colin (talk) 21:11, 12 March 2017 (UTC)
•  Support -- Colin (talk) 21:11, 12 March 2017 (UTC)
•  Support Obviously great! But why did you photostack 6 images here? The whole thing is rather flat... --Martin Falbisoner (talk) 21:17, 12 March 2017 (UTC)

• To get this much magnification (the image is about 35mm across), the case is only a few cm from the front of my 30mm macro lens. The depth of field is less than 1mm and the feature is a few mm deep. -- Colin (talk) 21:36, 12 March 2017 (UTC)

•  Support Doing strange things in the kitchen again, are you? ;-} --cart-Talk 21:31, 12 March 2017 (UTC)
  • This time it was my study (which has the LCD monitor providing the polarised light). However, that room has carpet which means one needs to stand absolutely still while the 1/3s photo is taken. A hard floor is definitely better for macro. -- Colin (talk) 21:36, 12 March 2017 (UTC)
•  Support -- King of ♥ ♦ ♣ ♠ 23:42, 12 March 2017 (UTC)
•  Support From a physicists view - the beauty of tension. From a photographic point of view - perfect (although I think I see some small spots outside the ring at about 7:30; see annotations). --PtrQs (talk) 00:03, 13 March 2017 (UTC)
  • Removed more spots. -- Colin (talk) 18:38, 13 March 2017 (UTC)
•  Support -- KTC (talk) 00:11, 13 March 2017 (UTC)
•  Support -- Thennicke (talk) 01:32, 13 March 2017 (UTC)
•  Support Mesmerizing! –Juliancolton | ^Talk 02:34, 13 March 2017 (UTC)
•  Support -- Johann Jaritz (talk) 07:07, 13 March 2017 (UTC)
•  Support --Kiril Simeonovski (talk) 12:22, 13 March 2017 (UTC)
•  Support Jacopo Werther ^iγ∂ψ=mψ 20:19, 13 March 2017 (UTC)
•  Support beautiful AND useful !! Olivier LPB (talk) 23:22, 13 March 2017 (UTC)
•  Support lNeverCry 01:38, 14 March 2017 (UTC)
•  Support -- -donald- (talk) 07:29, 14 March 2017 (UTC)
•  Support --Yann (talk) 11:57, 14 March 2017 (UTC)
•  Support --Agnes Monkelbaan (talk) 05:42, 15 March 2017 (UTC)
•  Support Daniel Case (talk) 18:49, 16 March 2017 (UTC)
•  Support Awesome! --Basotxerri (talk) 20:04, 16 March 2017 (UTC)

Confirmed results:

Result: 18 support, 0 oppose, 0 neutral → featured. /George Chernilevsky ^talk 09:41, 18 March 2017 (UTC)

This image will be added to the FP gallery: Objects