Photography Led Light
urgent whats really important about Edwin Land that I could say?? also read below urgent urgent!!!?
ok I found this and summarized
One day, he was experimenting through three projectors with colors red, blue and green. He turned off the blue projector and removed the green filter from the green projector. Therefore he only had the red projector projecting red light, and the green image projected with white light. However interestingly enough, Dr. Land and his assistant found out that even though the image should only contain shades of black, red and white, they can see the colors blue, green and yellow projected on the screen. This accident led him to apply the phenomenon photography and designing of instant camera.
but what does this prove??? I don’t get it why though??? why could he see blue and green and yellow even though they are removed why though??? why???
plz plz let me know within 20 min
I have to go to sleep
and I am presenting this tomorrow!
thanks
i know this wont help but i need more time to look up what u exactly want. I’ll try . I m sending this anywayz.
Edwin Herbert Land, American physicist and inventor, born in Bridgeport, Connecticut. While a freshman at Harvard University in 1926, he became interested in polarized light (light oriented in a plane with respect to the source). Taking a leave of absence, he developed a new kind of polarizer, which he called Polaroid, by aligning and embedding crystals in a plastic sheet. Land returned to Harvard at the age of 19 but left again in his senior year to found a laboratory nearby. Joined by other young scientists, he applied the polarizing principle to light filters, optical devices, and motion picture processes.
In 1937 the group became the Polaroid Corporation with Land as president and head of research. During World War II the corporation turned to military tasks, inventing infrared filters, dark-adaptation goggles, and target finders. In the late 1940s it introduced the first model of its most successful product, the self-developing Polaroid Land camera; it also put out a microscope for viewing living cells in natural color. For his contributions to the fields of polarized light, photography, and color perception, Land received numerous awards and honorary degrees.
His breakthrough came when he realized that instead of attempting to grow a large single crystal of a polarizing substance, he could manufacture a film with millions of micrometre-sized polarizing crystals that were coaxed into perfect alignment with each other.
After developing a polarizing film, Edwin Land returned to Harvard. However, he still did not finish his studies or receive a degree. Once Land could see the solution to a problem in his head, he lost all motivation to write it down or prove his vision to others.[2] Often his wife, at the prodding of his instructor, would extract from him the answers to homework problems. She would then write up the homework and hand it in so he could receive credit and not fail the course.
Following the end of the war Land sought new areas to exploit. He chose photography and concentrated on designing an instant camera. Chemicals to develop the film were contained in a lead pod pierced as it was squeezed through a pair of rollers. Early instant cameras required a wait of a minute or more before peeling away the protective plastic. Land’s SX70 camera, launched in 1972, ejected the print instantly for the image to develop within seconds.
Land also tried to develop a new theory of color vision that began by rejecting the old trichromatic theory linked with Newton and Young. How, he asked, does the eye cope with an excess of red in a room lit by an incandescent tungsten light? Familiar objects like green apples and yellow lemons do not appear to redden in this artificial light, despite the fact that it does not have the same spectral distribution as sunlight. How do objects retain their ‘color identity’ under a great variety of lighting conditions? It cannot simply be the responses of the retinal photoreceptors to radiant energy; also involved are high-level brain processes. Thus for Land, vision was a retina-and-cortex system, which he called a retinex system.
http://blog.modernmechanix.com/2006/06/30/worlds-first-instant-camera-polaroid-land-camera/
Flashpoint LED Video Light: Product Reviews: Adorama Photography TV
Tags: art, diy, led, light, photography, photography led light box, photography led light bulbs, photography led light panel, photography led lighting, photography led lighting systems