One such project is called NewsFlash, and uses high-frequency red and green light to transmit data to the built-in camera on a receiving device -- in this case Samsung's Epic 4G.
The vehicle systems are capable of tasks such as scanning movement of objects around it, identifying a green light from a red light and measuring the trajectory of the vehicle on the road.
The techniques employed might also help to improve LEDs that produce white light by mixing red, green and blue emitters.
So defense lawyers first provide the name and Social Security number of a client to the criminal division of the IRS, and are given a green or red light for the program.
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So in an elaborate dance, defense lawyers first provide the name and Social Security number of a client to the IRS, and are given a green or red light for the program.
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Generally LED bulbs use either a combination red, green and blue LEDs to create white light, or they use a phosphor coating (more common) in combination with a blue LED.
Last year, he announced plans to classify the performance of English hospital trusts using a simple traffic-light system of green, amber and red.
Seven members of the Formula One Teams Association, McLaren, Renault, Toyota, BMW Sauber, Brawn GP, Red Bull Racing and Toro Rosso gave Schumacher and Ferrari the green light.
An Eco Illumination2 light turns from red to green as driving efficiency increases and provides an awareness of driving habits.
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Those LEDs were then set to that light up red or green to illuminate the EM wave peaks and valleys.
They are available in ten colors, including black, white, red, pink, light brown, dark gray, yellow, purple, orange and green.
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When a GPS-equipped bus approaches an intersection, it can, as before, take over the intersection's traffic light, but the computer can also calculate its expected time of arrival and decide either to extend a green light or shorten a red light.
The display's backlight has nanopatterned grooves that send blue, green and red in multiple directions, letting the LCD show only the light that would be seen from a given viewpoint.
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Red, green and blue filters then allow different colours to show within each pixel, but light has to be shone through them for this to happen.
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You will have your own favourites, but I always liked the Traffic Light Tree in London's Docklands, a bewildering display of red, amber and green which kept me waiting, transfixed and tense, for really quite some time when I first encountered it.
Instead of having spectacles with a crude red filter for one eye and green for the other, the Real D system relies on circularly polarised light with one lens polarising the light to the left, and the other to the right.
Some retailers and manufactures have preferred a "traffic light" system in which the least healthy foods are labelled red and the most healthy are in green.
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