coloured rays blend like powder paint

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Categories: Comparisons

An example of an analogy used to explain science

"…Transmutations made by the convening of divers[e] colours are not real; for when the difform Rays are again severed [separated], they will exhibit the very same colours, which they did before they entered the composition; as you see, Blew and Yellow powders, when finely mixed, appear to the naked eye Green, and yet the colours of the Component corpuscles are not thereby really transmuted, but only blended. For, when viewed with a good Microscope, they still appear Blew and Yellow interspersedly."

Isaac Newton

Philosophical Transactions Februry 19th 167172

A Letter of Mr. Isaac NewtonProfessor of the Mathematicks in the University of Cambridge; containing his New Theory about Light and Colors: sent by the Author to the Publisher from Cambridge, Febr. 6. 167172in order to be communicated to the R. Society.

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[Please be aware that a word may have different nuances, or even a different meaning, according to context.]« Back to Index

Author: Keith

Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge.