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Speed of red light and blue light in a vacuum?
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.
What colour will blue and red give?
Purple
What colour indicates useful information?
blue
What proportion of red and blue make violet?
Violet, the colour is named for the flower. The flower is a slight bit more blue-purple than real purple and some what lightened. If you are looking to match the colour of a violet you will need 2 parts Blue + 1 7/8 parts Red, then add a touch of white to soften the colour. If you are looking for the "violet" that is now used to describe the secondary colour (it used to be called purple) then add equal parts Red and Blue.
What are the key primary colors?
In Art, the primary colours are; blue, yellow and red. These three colours are primary because they mix in together to make another certain colour, for example, blue mixed with yellow makes green. They are also known as the primary colours because no other colour in the colour wheel can be mixed to make these three. In Science however, the three primary colours are; red, green and blue. Yellow is a secondary colour.
