The colors of the chromatic spectrum have different shades or tones, which are usually represented in the chromatic circle, where the primary colors and their derivatives are located. Ĭolor is a specific wavelength of white light. On the other hand, at sunset, when the atmosphere is denser, the light is less scattered, so that the longer wavelengths, red, are perceived. the blue photons, which is why the sky is perceived as blue. In its interaction with the Earth's atmosphere, sunlight tends to scatter the shorter wavelengths, i.e. White light from the sun consists of a continuous spectrum of colors which, when divided, forms the colors of the rainbow: violet, indigo blue, blue, green, yellow, orange, and red. If that object is in turn the same color, it will reinforce its level of colored luminosity, i.e. When white light hits a surface of a certain color, photons of that color are reflected if these photons subsequently hit another surface they will illuminate it with the same color, an effect known as radiance - generally perceptible only with intense light. Both black and white are not considered colors of the conventional chromatic circle, but gradations of brightness and darkness, whose transitions make up the shadows. Physical objects have different levels of luminance (or reflectance), that is, they absorb or reflect to a greater or lesser extent the light that strikes them, which affects the color, from white (maximum reflection) to black (maximum absorption). Primary, secondary and tertiary colors on the traditional color wheel (RYB) It is one of the most important aspects of visual art. Light is the fundamental building block of observational art, as well as the key to controlling composition and storytelling. The greater emphasis given to the expression of light in painting is called " luminism", a term generally applied to various styles such as Baroque tenebrism and impressionism, as well as to various movements of the late 19th century and early 20th century such as American, Belgian, and Valencian luminism. On the other hand, light has been a particularly determining factor in various periods and styles, such as Renaissance, Baroque, Impressionism, or Fauvism. The technical representation of light has evolved throughout the history of painting, and various techniques have been created over time to capture it, such as shading, chiaroscuro, sfumato, or tenebrism. At the same time, light is intrinsically found in painting, since it is indispensable for the composition of the image: the play of light and shadow is the basis of drawing and, in its interaction with color, is the primordial aspect of painting, with a direct influence on factors such as modeling and relief. The incidence of light on the human eye produces visual impressions, so its presence is indispensable for the capture of art. Also, light can have a symbolic component, especially in religion, where this element has often been associated with divinity. Light in painting fulfills several objectives, both plastic and aesthetic: on the one hand, it is a fundamental factor in the technical representation of the work, since its presence determines the vision of the projected image, as it affects certain values such as color, texture and volume on the other hand, light has a great aesthetic value, since its combination with shadow and with certain lighting and color effects can determine the composition of the work and the image that the artist wants to project. Port with the disembarkation of Cleopatra in Tarsus (1642), by Claude Lorrain, Musée du Louvre, Paris
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