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To generate white light best suited as an LCD backlight, parts of the light of a blue-emitting LED are transformed by quantum dots into small-bandwidth green and red light such that the combined white light allows a nearly ideal color gamut to be generated by the RGB color filters of the LCD panel. The quantum dots may be in a separate layer as ...
The Worth Four Light Test, also known as the Worth's four dot test or W4LT, is a clinical test mainly used for assessing a patient's degree of binocular vision and binocular single vision. Binocular vision involves an image being projected by each eye simultaneously into an area in space and being fused into a single image.
In 1999, Lumileds Corporation of San Jose, California, introduced the Luxeon LED, a high-power white-light emitter. This made possible LED flashlights with lower power consumption and running time better than incandescent flashlights with similar light output. The first Luxeon LED flashlight was the Arc LS, designed in 2001.
The first is mis-calling the white light the complement of the colors presented. For example, red-white is said to be "red-green", or green-white is called "green-red". The second is when a pair of lights of the same color but differing in brightness by 50% is displayed, the brighter identical color is said to be "white".
Consumer Reports Best Buy Drugs is available free on Consumer Reports Health.org. It compares prescription drugs in over 20 major categories, such as heart disease, blood pressure and diabetes, and gives comparative ratings of effectiveness and costs, in reports and tables, in web pages and PDF documents, in summary and detailed form.
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
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