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What is blue light? The world is pulsing with electromagnetic energy. It travels around us, and even through us, in waves. The waves vary in length, with the longest being: radio waves....
6 min read. What Is Blue Light? Your tablet, smartphone, laptop, and flat screen TV all have one thing in common: They each give off blue light. The colors in the visible light spectrum are:...
What is blue light? Blue light is part of the visible light spectrum – what the human eye can see. Vibrating within the 380 to 500 nanometer range, it has the shortest wavelength and highest energy. About one-third of all visible light is considered blue light. Sunlight is the biggest source of blue light.
What Is Blue Light? It’s one of several colors in the visible light spectrum. The others are: Red. Orange. Yellow. Green. Blue. Indigo. Violet. You may know them by the acronym ROY G BIV....
What is blue light? The effect blue light has on your sleep and more. Although it is environmentally friendly, blue light can affect your sleep and potentially cause disease. Until the advent of artificial lighting, the sun was the major source of lighting, and people spent their evenings in (relative) darkness.
You’ve heard of blue light, but what is it? Read about its benefits and risks, as well as whether blue-light-blocking glasses and night mode work to reduce your exposure.
Blue light is a wavelength of light often emitted by electronic devices and artificial lights. During the day, blue light influences your circadian rhythm, affecting alertness and heart rate. Limiting blue light at night can help mitigate its effects on sleep.
Blue light generally is defined as visible light ranging from 380 to 500 nm. Blue light sometimes is further broken down into higher energy blue-violet light (roughly 380 to 450 nm) and lower energy blue-turquoise light (roughly 450 to 500 nm).
When you stare at a screen for hours at a time, whether it is a computer, TV, phone or tablet, you are exposed to blue light from the device. Alarmist headlines claim blue light from too much screen time is blinding us. But there is no scientific evidence that blue light from digital devices causes damage to your eye.
Blue light is the visible light at the blue end of the spectrum. Although not as energetic as ultraviolet (UV) light, there is concern that high doses of blue light may cause more cellular damage than longer wavelengths of visible light (which you see as the colors red through green).