All white-light technologies вЂ“ including LED вЂ“ emit more short-wavelength light than HPS. HPS street lighting is being replaced by street lighting technologies that emit вЂњwhiteвЂќ light вЂ“ primarily LED, due to its higher efficiency and longer life. ДЇor the last several decades, most street lighting in the United States has used high-pressure sodium (HPS) technology, which emits orange-yellowish light. Myth: Communities are better off with conventional street lighting. White light sources that contain short wavelengths, for example, can show the colors of objects more naturally, aid in identification of people and objects, improve the contrast between an object and its background, and enhance peripheral vision at the low levels of illuminance that typically characterize street lighting. Short wavelengths are a key component of the visible light spectrum, with benefits ranging from aesthetics to safety. Most street lighting situations benefit from having at least some amount of short-wavelength content. Myth: Street lighting should never emit any short-wavelength light. This means they can often meet the same illumination requirements as conventional streetlights while emitting much less light вЂ“ thus reducing even further any short-wavelength content. LEDs also offer much greater control over where the light falls. Tremendous advances since then, however, mean that todayвЂ™s LEDs can be designed to emit as little, or as much, short-wavelength light as desired, without excessive drop-off in efficiency or other aspects of performance. ItвЂ™s true that early LED lighting products tended to have greater levels of short-wavelength content because the technology was still in its initial stages of development. Myth: LED lighting emits more short-wavelength light than do other lighting technologies. The concern is that too much nighttime exposure to short-wavelength light may disrupt sleep patterns and have other undesirable effects. ItвЂ™s present in sunlight and has been shown to play an important role in a number of physiological processes, such as affecting circadian rhythm (our 24-hour вЂњbiological clockвЂќ that controls sleep/wake cycles). On the contrary, short-wavelength light is a fundamental component of the natural world. Myth: All short-wavelength light is harmful to humans and animals. And, unlike other types of streetlights, LED streetlights actually offer the potential to control the amount of short-wavelength light that they emit.

The concern is not the type of light source, but the amount of emitted light that falls in the short-wavelength, often referred to as the вЂњblueвЂќ part of the spectrum.

LED streetlights are no more harmful to humans and animals than other kinds of streetlights. BISON, NASH, RYU, CHUN-LI, RASHID, and the rest of the Street Fighter cast to star in a struggle that culminates in an epic showdown.Myth: LED streetlights are more harmful to humans and animals than other kinds of streetlights. The fighters battle across the globe in their search for 'pieces' that will give them the upper hand. This story takes place between the events of Street Fighter IV and Street Fighter III.ДЇollow the Street Fighters as they battle the evil secret organization, Shadaloo, who has developed a weapon to bring the world to its knees: the Black Moon.

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