( symbol is λ ) is equal to the "Velocity of light" divided by the frequency. Light has wave characteristics wavelength is the peak to peak distance of two adjacent waves. If we move beyond The Visible Light Region toward longer wavelengths, we enter the infrared region and if we move toward shorter wavelengths, we enter the ultraviolet region.īoth of these regions cannot be seen by The Human Eye. The light region which The Human Eye can see is called The Visible Light Region or The Visible Spectrum. The Light in the region of the longest wavelength is seen as Red. The Light in the region with the shortest wavelength is seen as Violet. Of Light with a seventh Color ( Indigo ) sometimes specified, between Blue and Violet. The Visible Spectrum arranged in the order Red, Orange, Yellow, Green, Blue and Violet according to the different wavelengths These will produce the same sensation as white light.Īmong these pairs are certain Red and Cyan, Green and Magenta, Blue and Yellow. The Additive Primary Colors Red Green BlueĪ mix of these Primary Colors R + G + B = WhiteĪ number of pairs of pure spectral colors called Complementary colors also exist if mixed additively. In the first place a distinction has to be made between luminous and light reflecting object. Up to now the circumstances that can affect the perception are mentioned. When two colors give no reflection or are black when mixed, these two colors are also called: Complementary Colors. When one lets a beam of white light reflect a mixture of pigments or let the beam pass successively different colored transparent materials than the absorption curves of the reflecting or transparent materials are added and this is called the subtractive color mixing. When two colors give white light when mixed, these two colors are called: Complementary Colors. The additive mixing is when two light beams are observed together and one can see the sum of both light intensities. Thousands of color maps are arranged in these atlases.Ĭolor can arise in two ways: additive and subtractive. The three characteristics: the hue, the lightness and the saturation have been used for the compilation of systematic color atlas, like the Munsell atlas and the DIN atlas. These observations gave considerable support to the trichromatic theories of the existence of three pigments in the retina of the human eye with a sensitivity for respective red, green and blue. It seemed possible to reproduce a color by the additive color mixing of the right quantities of the three primary colors: red, green and blue.Īlso, an additive mixture of two colors can be reproduced by the sum of two trios of primary colors, necessary to be able to reproduce both colors separately. It appeared possible to classify color three dimensionally: the lightness or brightness as light and dark, the hue or color tone as red, orange, yellow, green, blue violet, and the saturation as more or less mixed with white light. Two light beams can give the same color impression with considerable different spectral curves. However, in practice light exist mostly of different wavelengths, where the observed color impression depends on the intensity distribution of the wavelengths. The so-called cones in the retina of the human eye are most sensitive for a radiation of 550 nanometer and is not coincidental the wavelength of the maximum intensity of the sunlight and gradually less sensitive for light with smaller and larger wavelengths than 550 nanometer. However, it is not sensitive for all wavelengths to the same extent. The human eye is only sensitive for the part of the electromagnetic spectrum corresponding with the frequencies of about 4.0 x 10 14 toħ.5 x 10 14 vibrations per second. These different wavelengths of light make the following color impressions on the human eye. This meter sorts the beam of light into wavelengths and measures the intensity of each wavelength. It is possible to see the content of a light beam with the help of a spectrophotometer. The information provided here is a guide to what its all about. To work with Glomania UV Black Light Paints and Glomania Glow in the Dark Paints and pigments we first need to understand light and wavelength. Glow in the dark & UV Black light Garage Floor & Table top Flake StarMakerFX Extreme Glow in the dark PaintĬhameleon Directional Color Changing Pigment UVI Invisible Neutral Black Light Neon Paint
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