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- In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light, some of which humans perceive as similar to violet.
en.wikipedia.org/wiki/Violet_(color)
The primary colours of light are red, green and blue. Mixing these colours in different proportions can make all the colours of the light we see. This is how TV and computer screens work.
Apr 10, 2022 · Blue and red is sometimes combined to make purple and is very effective for acne. Blue and green can also be combined to get cyan and this is also helpful for acne and pigment stains. Most handheld devices for LED light therapy will be pre-made to combine certain colors.
Jan 16, 2021 · The visible light spectrum is the region of the electromagnetic spectrum that human eyes see. It runs from wavelength of about 400 nanometers (nm) at the violet end of the spectrum to around 700 nm at the red end of the spectrum.
In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light, [5] [6] some of which humans perceive as similar to violet.
Mar 1, 2023 · When the red light overlaps blue light, you see purple or sometimes vivid pink. Similarly, when the red bleeds into the yellowish green from oxygen, you get orange aurora.
Oct 11, 2023 · Red light therapy is commonly used for skin rejuvenation, pain relief, and hair growth. Blue light therapy emits wavelengths between 400-500 nm and only targets superficial skin layers, effectively treating acne, improving the skin microbiome, and boosting alertness by influencing circadian rhythms.
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Jun 7, 2024 · The wavelengths of visible light are: Violet: 380–450 nm (688–789 THz frequency) Blue: 450–495 nm; Green: 495–570 nm; Yellow: 570–590 nm; Orange: 590–620 nm; Red: 620–750 nm (400–484 THz frequency) Violet light has the shortest wavelength, which means it has the highest frequency and energy. Red has the longest wavelength, the ...
