Science ACE assignment - Primary colours

To supplement my ACE points, I also chose to do an assignment on different primary colours and how they are used in daily life. I researched on three models - the RGB, the RYB, and the CMYK models. An excerpt from my research is shown, on the CMYK model, used in printing.

·       The CYMK model is the last one of the commonly known models of primary colours.

·       This acronym stands for Cyan, Yellow, Magenta, and Key (which means black ink).

·        This format is usually utilised by printing and publishing businesses, and when printing out documents and images from a conventional printer. Though the print quality depends on the press house that purchases the ink, the printer being used to produce the text or image, and the type of ink used for printing, the ink is usually applied in the order the acronym follows: cyan, followed by yellow, then magenta, then black.

·       This format works by partially or entirely masking the above colours in the afore-mentioned order onto a lighter background, usually white. The coloured ink thus reduces the amount of light that gets reflected from the paper.

·       Hence, it is known as a subtractive model, as it “subtracts” the amount of light that gets reflected off the paper.

·       The difference between this format and the additive “RGB” format is that while white is the combination of all colours in the RGB format, and black is the absence of any colour, the “CYMK” format has white meaning that there is no colour at all, and that black is the compilation of all the colours. 

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