It has been theorized that street lamps based on solid-state lighting technology cause a form of light pollution known as "skyglow." Clouds increase the radiance of red light found in the skyglow by a factor of 17.6, giving cloudy nights in urban areas their reddish color.
A "red sky at night" is also an old weather saying, denoting the red tinge the setting sun has on clear skies, signifying good weather. Dust and small particles get trapped in the atmosphere due to high pressure, which scatters the blue light and leaves only the red light, giving the sky its appearance.Learn More
Red and yellow mixed together make the color orange. Red and yellow are both considered primary colors, which means that they cannot be created by mixing two other colors. Blue is the only other primary color.Full Answer >
Red is a primary color, so it is not usually possible to produce it by mixing two or more colors. However, print technology uses alternative primary colors, and an overlapping of magenta and yellow produces red.Full Answer >
Red is a very intense, very stimulating color that represents physical needs and a will to survive. Representative of blood and fire, the vivid color is aptly associated with war and passion.Full Answer >
Red on a black background gives a glowing effect. A white background dulls the red, and red merges into the color orange with a clashing effect. The best color to pair with red depends on what effect is desired.Full Answer >