Pylon Posted July 10, 2015 Share Posted July 10, 2015 Here is another shot of the plant I had laying around: Link to comment
Andrea B. Posted July 11, 2015 Share Posted July 11, 2015 hmmm, interesting.... I'm assuming from the gif that this plant is outdoors? So the non-uniform patches of yellow-green fluorescence might be from animal urine. Don't want to gross you out or anything, but that's likely what it is. ;) :) Anyway, good find on your part. The purplish patches could be from violet light leakage or from structural colouration (iridescence) caused by the leaf structure. Hard to say on this one. I can't figure out what this hairy-leaved plant is!! Link to comment
Pylon Posted July 12, 2015 Author Share Posted July 12, 2015 I'm assuming from the gif that this plant is outdoors? So the non-uniform patches of yellow-green fluorescence might be from animal urine. Don't want to gross you out or anything, but that's likely what it is. ;) :)Yes it was outdoors, if you are talking about the brighter yellow-green-whitish patches that are glowing throughout the frame, those were actually flowers that were coming out of the plant/bush/shrub, most of them were kinda shriveled up, plus they are difficult to identify looking at a small 2D gif. The purplish patches could be from violet light leakage or from structural colouration (iridescence) caused by the leaf structure. Hard to say on this one.That is interesting. I will have to do more tests. Link to comment
Andrea B. Posted July 12, 2015 Share Posted July 12, 2015 No, I meant the leaves not the flowers. Can't figure out why some leaves would fluoresce and others not? But there are always surprises with fluorescence. "-) If you read the Shiny Metal Test (linked elsewhere in response to one of your posts), that will help determine whether you have some violet or blue leakage from your UV-LED. Most do leak a bit of visible violet or violet-blue. Loved your gif flip !! What did you use for that? Link to comment
Pylon Posted July 12, 2015 Author Share Posted July 12, 2015 Loved your gif flip !! What did you use for that?Adobe Photoshop (Window -> Timeline (or Animation). layers. File -> Save for Web) Link to comment
Andrea B. Posted July 13, 2015 Share Posted July 13, 2015 oh foo. I don't have PS anymore. But thanks anyway! Link to comment
Johan Posted July 22, 2015 Share Posted July 22, 2015 I've seen clear yellow-green UVIFL on the very young stems of certain types of rhododendron. Older leaves didn't have it. I don't think it's urine - rather some natural thing to do with age. I (very) vaguely remember that it had something to do with a certain layer on said leaf that changes as it is exposed to photosynthesis... but maybe I'm confusing it with something else. Link to comment
Andrea B. Posted July 22, 2015 Share Posted July 22, 2015 Johan - hello !! Thank you for this observation. It was an interesting find that Evan made. It seemed somewhat random in the foto so I had thought that it was not a natural thing, but it's difficult to say. We can probably Google around and find some reference to this somewhere. Link to comment
Pylon Posted August 3, 2015 Author Share Posted August 3, 2015 rhododendron does sound familier and it could very well be that Link to comment
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