PERFECT INFORMATIONS: Trade union banners

In Britain trade union banners have been made since the s and at May Day parades they could be counted in the hundreds. The iconography of these banners included mines mills factories but also visions of the future showing a land where children and adults were wellfed and living in tidy brickbuilt houses where the old and sick were cared for where the burden of work was lessened by new technology and where leisure time was increasing. The same kind of banners are also used in many other countries. Many but not all of them have red as a dominant colour.For more on the design and making of these banners see Bannermaking. Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye in the wavelength range of roughly – nm. Longer wavelengths than this are called infrared or below red and cannot be seen by the naked human eye. Red is used as one of the additive primary colors of light complementary to cyan in RGB color systems. Red is also one of the subtractive primary colors of RYB color space but not CMYK color space.In human color psychology red is associated with heat energy and blood and emotions that stir the blood including anger passion and love.The word red comes from the Old English read. Further back the word can be traced to the ProtoGermanic rauthaz and the ProtoIndo European root reudh. This is the only color word which has been traced to an IndoEuropean root. In the English language the word red is associated with blood certain flowers i.e. roses and ripe fruits i.e. apples cherries. Fire is also strongly connected as is the sun and the sky at sunset. Healthy people are often said to have a redness as opposed to appearing pale. After the rise of socialism in the midth century red was to describe revolutionary movements. The word is also obviously associated with anything of the color occupying the lower end of the visible light spectrum such as red hair or red soil. Red Indians is a British term for Native Americans American terms for this ethnic group include redskin and red man though they are not the preferred terms.

Red is any of a number of similar colors evoked by light consisting predominantly of the longest wavelengths of light discernible by the human eye in the wavelength range of roughly – nm. Longer wavelengths than this are called infrared or below red and cannot be seen by human eyes. Red lasers used in early compact disc technologies are being replaced by blue lasers as reds long wavelength causes the lasers recordings to take up more space on the disc than blue lasers. Red light is used to preserve night vision in lowlight or nighttime situations as the rod cells in the human eye arent sensitive to red. Red is used as one of the additive primary colors of light complementary to cyan in RGB color systems. Red is also one of the subtractive primary colors of RYB color space but not CMYK color space.One common use of red as an additive primary color is in the RGB color model. Because red is not by itself standardized color mixtures based on red are not exact specifications of color either. In order to produce exact colors the color red needs to be defined in terms of an absolute color space such as sRGB. As used in computer monitors and television screens red is very variable but some systems may apply color correction so that a standardized red is produced that is not in fact full intensity of only the red colorant.