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 Newton, Professor 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. 167172; in order to be communicated to the R. Society.
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