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natural philosophy

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Newton, Isaac (1642-1727)
Opticks, or, A treatise of the reflections, refractions, inflections and colours of light.
The second edition, with additions.
London : Printed for W. and J. Innys, 1718.

Image from Newton's Opticks

Newton's Opticks was first published in 1704. It aimed 'not to explain the Properties of Light by Hypotheses, but to propose and prove them by reason and experiment'. The great achievement of the work was to show that colour was a mathematically definable property. Newton's 'Queries', added to the first Latin edition of 1706 and augmented in subsequent editions, are an important source for his views on natural philosophy in general.

Another image from Newton's Opticks
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