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Alexander's Star was invented by Adam Alexander, an American mathematician, in 1982. It was patented on 26 March 1985, with US patent number 4,506,891, and sold by the Ideal Toy Company.
Lawrence Journal-World - Dec 12, 1982
VIDEO: Vintage Alexander's Star Unboxing
Adam Alexander book, "The Official Solution to Alexander's Star Puzzle"
- How the Star was invented
- Clear, easy-to-understand, step-by-step official solution
- Variations on the basic solution
- A fascinating look at mathematics and puzzles
"Droste effect" is a Dutch phrase for a particular type of recursive painting.
An image that presents Droste effect has a small picture of itself, which is located where it should be if it was a real image. This small image also contains in turn an even smaller version of itself, and so on. Technically there is no limit to the number of iterations, but in practice it continues until the resolution allows us to distinguish a change.
The word "Droste" was coined by poet and journalist Nico Scheepmaker at the end of the 70s in 20th century. It’s named from Droste, a Dutch brand of cocoa, showing on its confection an image of a nurse that held in her hand a tray with a cup and a box of the same brand. (http://en.wikipedia.org/wiki/File:Droste.jpg)
Droste effect examples
- An example of the Droste effect can be created easily by placing two mirrors facing each other. Another method is to film a TV screen showing what is being filmed.
- The self-portrait of the American painter and illustrator Norman Rockwell. (http://www.wikipaintings.org/en/norman-rockwell)
- The album cover of Pink Floyd's Ummagumma, where a photo of the group is repeated, with some modifications, in the frame of a painting that is part of itself photograph . (http://farm4.staticflickr.com/3214/3089806243_49bbc4ee00_o.jpg)
- Video of Bohemian Rhapsody by Queen.
Watch “The mathematics behind the Droste effect”:
Gif source: http://commons.wikimedia.org/wiki/File:Diyarbakir_1050645_Droste_Effect_480.gif
Escher and the Droste effect: http://escherdroste.math.leidenuniv.nl/
#mathematics #droste_effect #Art #recursive_painting #science
I can't remember the processing I did on this even though it was just last night. I can say I used #silverefexpro2 . I do remember adding a slight selenium tone to it. I also added more sharpening than usual because there's a lot of distance between the camera and the mountains and that tends to soften the image. Adding more sharpening means adding more noise, in general. Because of the extra noise I added some noise reduction to the sky using the brush in Lightroom. I was cropped in lightroom.
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