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Twenty fifteen the question went viral on social media some saw the dressed in blue and black others as white and gold it actually led to new research into our perception of colors. industry has long recognized the power of color but what's actually behind it. the human eye can distinguish as many as ten million shades of color but color is not so much a tangible thing as a matter of perception we experience a color when incoming light strikes light sensitive cells in our eyes that send the information to the brain. the brain in turn interprets the light as a particular color so in that sense ...

Twenty fifteen the question went viral and social media some saw the dresses blue and black others as white and gold it actually led to new research into our perception of colors. industry has long recognized the power of color but what's actually behind it. the human eye can distinguish as many as ten million shades of color but color is not so much a tangible thing as a matter of perception we experience a color when incoming light strikes light sensitive cells in our eyes that send the information to the brain. the brain in turn interprets the light as a particular color so in that sense co...

First described by astronomer jaime they should have obama's around two hundred years ago that's why it's called old bias paradox. today we believe the universe formed fourteen billion years ago in what's called the big bang since then says the theory the universe has been expanding at an ever increasing rate. here on earth we can see just one small sliver of the universe many stars are so far away that their light hasn't arrived here yet after all it takes two and a half million years for light to make the journey from our nearest galactic neighbor andromeda to the earth. and because the univ...

The technology that was available at that time, i realized they had everything already. >> from his study of art history, allen knew that medieval artists already used an optical device called a camera obscura. >> camera obscura work exactly like a human eye. what we have here is a box that is sealed. no light can enter into it except through this hole. like a human eye, there is a lens. whatever is outside this box is focused through this lens and forms an image on the back wall of the camera and it's inverted. in other words, it's upside down. >> the lens at the front of the camera ensures a...

. using a simple glue mold to trick the scanner. fing up we were working with the only detection device that was certified in germany for that purpose and the company claimed that the device could distinguish between a fingerprint mockup on the real thing. and so we used a fake fingerprint and the device couldn't tell the difference for an associate a couple. in it and then for us that's definitely cause for concern today we want to find out whether there are similar problems with security systems that are based on the iris of the human eye. we take a photograph of starbucks iris. he