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Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
They are also referred to as jogging pants in Canada. History. The first pair of sweatpants was introduced in the 1920s by Émile Camuset, ...
Running while Black is a sardonic description of racial profiling experienced by Black runners in the United States [1] and Canada. [2] In the United States, jogging gained popularity after World War II, and has largely been portrayed by American media as an activity typically engaged in by White people; joggers of color are treated with suspicion. [3]
A white surface treated with an optical brightener can emit more visible light than that which shines on it, making it appear brighter. The blue light emitted by the brightener compensates for the diminishing blue of the treated material and changes the hue away from yellow or brown and toward white.
It has unusually blue near-infrared J−K S color. [5] [4] [6] [13] According to Cushing et al. 2010, its peculiar spectrum is primarily a result of thin condensate clouds, and also vertical mixing occurs in its atmosphere. [9]
It was while working for Nichia that Nakamura invented the method for producing the first commercial high brightness gallium nitride (GaN) LED whose brilliant blue light, when partially converted to yellow by a phosphor coating, is the key to white LED lighting, which went into production in 1993.
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