In a vacuum the speed of red and blue light are the same as all light, 300,000,000m/s. Their frequency and wavelength will be different but the speed remains the same.
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Magenta.
The primary colors of light, as I studied it, are red, blue and green. The secondary colors are magenta, yellow and cyan. The mixture of all primary colors is white.· Red + Blue = Magenta· Red + Green = Yellow· Blue + Green = Cyan
T.T the 3 primary colours for light are: red, blue, green and the 3 primary colours for paint are red, blue, yellow
primary colors are blue red and yellow when you blend two primary colors together you get secondary colors blue+red=purple red+yellow=orange yellow+blue=green and the primary colors of light are blue red and green. when you mix blue and red light you get magenta, red mixed with green yields yellow. and green mixed with blue yields cyan blue. so you a connection between using pigment and light - the secondary colors of light magenta, yellow and cyan just happen to be the colors that printers use to generate a color picture for you instead of red, blue and green pigment which unfortunately come out too dark to be used in the printing industry. the color mixing of pigments is subtractive and alway generates a color darker than its two parents. but the mixing of colored light is always additive and generates colors brighter than their parents. when you mix all three pigments what do you see black. but when you mix all the colors of light you get white light. see here:http://home.att.net/~B-P.TRUSCIO/COLOR.htm
To make all colors in pigment the 3 primaries must be transparent. Transparent yellow is ASTM number PY150 made from the nickel element. Transparent magenta is PR122, C20H12N2O2. Transparent yellow and transparent magenta mix into the secondary pigment color red. The 3rd transparent primary pigment color is cyan, made from the copper element, PB15. Transparent yellow and transparent cyan make the secondary color green. Transparent cyan mixed with the the transparent magenta color make the secondary color ultramarine blue. Yellow, magenta and cyan are the primary pigment colors, red, green and blue are the secondary pigment colors. Light uses the opposite colors, the secondary pigment colors become the primary light colors. Red, yellow and blue are not the primary colors in pigment or in light. Those colors came from Newton in 1600 and they are just the most obvious colors in the prism and rainbow. RCW