anhinga_anhinga | Entries tagged with visual illusions

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"Подмигивание" -- one of the most pronounced dynamic "visual illusions" (flash):

http://journalofvision.org/4/6/5/ICA.htm

(via http://scienceblogs.com/mixingmemory/2007/05/cool_visual_illusions_the_wink_1.php, which contains the explanation and links to some related illusions)

Вторник, второе августа (via lzh)

I wish I knew how this works:

(http://www.log-in.ru/dtSection/Galleries/?cat=6&dog=1701&hamster=1)

Clever:

http://www.nytimes.com/2005/08/02/science/02cell.html

"Most molecules in a cell are constantly being replaced but the DNA is not. All the carbon 14 in a cell's DNA is acquired on the cell's birth date, the day its parent cell divided. Hence the extent of carbon 14 enrichment could be used to figure out the cell's age, Dr. Frisen surmised. In practice, the method has to be performed on tissues, not individual cells, because not enough carbon 14 gets into any single cell to signal its age. Dr. Frisen then worked out a scale for converting carbon 14 enrichment into calendar dates by measuring the carbon 14 incorporated into individual tree rings in Swedish pine trees."

( Read more... )

Chalk pictures on sidewalk.

"Drawings. NOT OBJECTS." (via

_rowan_tree_)

http://www.livejournal.com/users/mithrilian/72008.html
http://www.livejournal.com/users/lin_lobariov/111507.html

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"The Winking Effect"
(no subject)
Julian Beever

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