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

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                                Considerations of M.<sup>r<sup> Hook upon M.<sup>r<sup> Newton's Discourse of Light and Colours.

I have perused Discourse of M.<sup>r<sup> Newton about Colours and Re=
fractions and I was not a little pleased with the nicenesse
and curiosity of his observations. But though I wholly agree with
him as to the truth of those he hath alleged, as having by many
hundreds of tryalls found them soe; yet as to his Hypothesis of
Solving the Phenomena of Colours thereby, I confesse I cannot
see yet any undeniable Argument to convince me of the cer=
tainty thereof. For, all the Experiments and observations I
have hitherto made, may and even those very Experiments, which 
he alledgeth, do seem to me to prove, that <u>White</u> is nothing,
but a pulse or motion, propogated through an homogenious
uniforme and transparent medium: And that Colour is nothing but
the disturbance of that Light by the communication of that pulse
to other transparent mediums, that is, by the  Refraction thereof.
That <u>Whitenesse</u> and <u>Blacknesse</u> are nothing but the plenty or
scarcity of the undisturbed rays of Light, and that the two
Colours(than the which there are not more uncompounded in nature)
are nothing but the effects of a compounded pulse, or disturbed
propagation of motion caused by Refraction.

But how certain soever I think my self of my Hypothesis (which
I did not take up without trying some hundreds of Experiments)
yet I should be very glad to meet with one <u>Experimentum Crucis</u>
from M.<sup>r<sup> Newton that should divorce me from it. But it is not that
which he so calls will do the turne; for the same Phenomenon will
be solved by my Hypothesis, as well as by his, without any manner
of difficulty or straining; may I will undertake to shew another
Hypothesis, differing from both his and mine, that shall do this same
thing. 

That the Ray of Light is as twere split or rarified by Refraction,
                            
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Manuscript details

Author
Robert Hooke
Reference
RBO/4/45
Series
RBO
Date
1672
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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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