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en.wikipedia.org/wiki/Primary_color

There are numerous competing primary color systems throughout history. Isaac Newton performed an experiment where sunlight was passed through a prism and an assistant demarcated seven bands on the projected spectrum corresponding to red, orange, yellow, green, blue, indigo and violet.

www.quora.com/Why-do-we-only-have-7-primary-colors

In the 1660s, Sir Isaac Newton (1643-1727) conducted an experiment in which he passed sunlight through a triangular glass prism and observed that the light split into the spectrum, like a rainbow. As he was the one who observed the spectrum, he go...

www.reference.com/science/primary-secondary-colors-895d42630393d118

Red, blue and yellow are the primary colors and are the base of every other color. They cannot be recreated by mixing other colors together. Secondary colors result when two primary colors are mixed together; they include orange, green and purple. Tertiary colors are created when a primary color is mixed with a secondary color.

brainly.com/question/2844093

There are only three primary colors:" Red, Blue, Yellow" Hope this helps!

www.answers.com/Q/How_many_primary_colors_are_on_a_color_wheel

Answer: There are many possible primary colors. For additive combination the primary colors colors could be red, green and blue. For subtractive combinations, they could be magenta, cyan and yellow.

answers.yahoo.com/question/index?qid=20080217102215AAydQda

Best Answer: there are 3 primary colors, red blue yellow ---- those are the colors that make every color (exceptions are white and black, but those are not considered colors, moreso shades.) -- the secondary colors are green orange purple -- the secondary colors are 2 primary colors combined. e.g. blue and ...

www.youtube.com/watch?v=P0exta078aM

The color wheel, warm and cool colors, tints shades over the years, many variations of basic design have been made, but most traditionally, there are a number combinations that considered these ...

www.crayola.com/faq/another-topic/what-are-the-primary-colors

Primary colors include red, blue and yellow. Primary colors cannot be mixed from other colors. They are the source of all other colors. Secondary colors are mixed from two primary colors adjacent to each other on the color wheel. The secondary colors are orange, green and violet.

technologystudent.com/designpro/pricol1.htm

Primary Colours - These are colours that cannot be created through the mixing of other colours. They are colours in their own right. The three primary colours can be seen below RED - YELLOW - BLUE. Primary colours can be mixed together to produce SECONDARY COLOURS. The table below shows the combination required to produce secondary colours.

99designs.com/blog/tips/why-are-there-7-colors-rainbow

But elementary school finger painting teaches us that there are three primary colors—red, yellow and blue—that combine to make three secondary colors—orange, green and purple—and (plus or minus some black and white paint) every other color imaginable.