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Hace 19 horas · In physics, a redshift is an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light).The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift, or negative redshift.The terms derive from the colours red and blue which form the extremes of the visible light spectrum.
Hace 19 horas · Definitions. The French word mode, meaning "fashion", dates as far back as 1482, while the English word denoting something "in style" dates only to the 16th century.Other words exist related to concepts of style and appeal that precede mode.In the 12th and 13th century Old French the concept of elegance begins to appear in the context of aristocratic preferences to enhance beauty and display ...
