Considerations of Mr. Hook upon Mr. Newton's Discourse of Light and Colours

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                                make white and grant further that all luminous bodies are
compounded of such substances condensed and that whilst they shine
they doe continually send out on indefinite quantity thereof every way
in ortem which in a moment of tyme doth disperse it selfe to the
outmost and most indefinite bounds of the universe, granting shape,
I say I doe suppose there will be noe difficulty to demonstrare all
the rest of his curious Theory. Though yelt me thinkes all the
coloured bodyes in the World compounded together should not make
a white body and I should be glade to se an experiment of that
kind done on the other side if my supposition be granted, that
light is nothing but a simple and uniforme motion or puls of a
homogenious and adopted (that is a transparent) medium
propagated from the Luminous body in ortem to all immaginable
distances in a moment of tyme and that that motion is first
begun by some other kind of motion in the Luminous body.
such as by the dissolution of Sulphureous body by the aire.
or by the working of the aire or the sever all component parts
one upon another in Rotten wood, or putrefieing fish or by an
externall stroke as in diamant, sugar the Sea water or two
[text?] or cristall rubbed together and that this motion is
propagated through all bodies susceptible thereof, but is blinded
or mixt with other advantitious motions generated by the obliquity
of the stroke upon a refracting body, and that soe long as
those motions remain distinct in the same part of the medium
or propagated. Ray soe long they produce the same effect, but
when blended by other motions they produce other effects and
supposeing that by a direct contrary motion to the newly
impressed that adventious on be destroyed and reduced to the
first simple motion. I believe M<sup>r</sup> Newton will thinke it noe
difficult matter by my hypothesis to solve all the Phanomena,
not onily of the prisme tinged liquors and solid bodyes but of
the Colours of plated Bodys which seeme to have the greatest
difficulty His true. I can in my supposition conceive the white
or uniforme motion of light to be compounded of the compound
motions of all the other colours, as any on straight and uniforme
motion may be compounded of thousands of compound motions
in the same manner as Descartes explicates the reason of the
refraction but noe necessity of it [text?] M<sup>r</sup> Newton hath
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Robert Hooke
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Considerations of Mr. Hook upon Mr. Newton's Discourse of Light and Colours, 1672. From The Royal Society, RBO/4/45



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