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2. Do blue-light-blocking glasses work? This study suggests no - AOL

   www.aol.com/blue-light-blocking-glasses-study...

   Makers of blue-light-blocking glasses proclaim they can help reduce eye strain when looking at smartphones and computer screens for long periods of time. But an Australian-based study said these ...

3. Blue light-blocking glasses don't protect eyes or improve ...

   www.aol.com/news/blue-light-blocking-glasses...

   Blue light-filtering lenses typically block only about 10% to 25% of blue light, and screens don’t emit much anyway, said Rosenfield, who wasn’t involved with the new research. “The sun is ...

4. Do blue light glasses actually protect your eyes? Eye ... - AOL

   www.aol.com/news/blue-light-glasses-actually...

   In recent years, blue light-blocking glasses have become increasingly popular. People swear by the typically yellow- or orange-tinted spectacles to filter artificial blue light emitted from ...

5. Primary color - Wikipedia

   en.wikipedia.org/wiki/Primary_color

   The most common color mixing models are the additive primary colors (red, green, blue) and the subtractive primary colors (cyan, magenta, yellow). Red, yellow and blue are also commonly taught as primary colours, despite some criticism due to its lack of scientific basis.

6. Infrared cut-off filter - Wikipedia

   en.wikipedia.org/wiki/Infrared_cut-off_filter

   Thus a blue filter makes the picture look blue. A blue filter marginally allows more light in the blue wavelength to pass resulting in a slight shift of the color temperature of the photo to a cooler color. Because of this, the term "IR filters" is commonly used to refer to filters that pass infrared light while completely blocking other ...

7. Tetrachromacy - Wikipedia

   en.wikipedia.org/wiki/Tetrachromacy

   Tetrachromacy. The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1] Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of ...