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Blue light is a type of visible light on the light spectrum It has a relatively short wavelength of 415 to 455 nanometers Because of this, blue light rays contain more energy than many otherBlue light also helps boost alertness, heighten reaction times, elevate moods, and increase the feeling of well being Artificial sources of blue light include electronic devices such as cell phones and laptop computers, as well as energyefficient fluorescent bulbs and LED lightsEver notice how people texting at night have that eerie blue glow? Daily Exposure To Blue Light May Accelerate Aging Even If It Doesn T Reach Your Eyes Study Suggests Oregon State University Blue light filter

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