An Answer to this Letter [of Francis Linus], written 5 December 1674

Author: Isaac Newton

Source: ‘An Answer to this Letter [of Francis Linus]’, Philosophical Transactions of the Royal Society, No. 110 (25 January 1674/5), pp. 219.

Published online: August 2003

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- Revision History
  - 1 January 2001
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Related Texts
- This document is a reply to:
  A Letter of the Learn'd Franc. Linus … animadverting upon … Mr. Isaac Newton's Theory of Light and Colors, date 6 October 1674 [Philosophical Transactions 110 (25 January 1674/5)]
  Responses to this document:
  A letter of Mr. Franc. Linus … being a reply to the Letter printed in Numb. 110 [Philosophical Transactions 121 (24 January 1675/6)]

[Normalized Text] [Catalogue Entry]

<219>

An Answer to this Letter.

Sir.

THE Letter you thought fit to write by way of Animadversion upon Mr. Newton's new Theory of Light and Colors, grounded upon an Experiment of letting the Sun-beams through a little hole into a dark chamber, seems to need no other Answer but this, That you would be pleased to look upon and consider the Scheme in Mr. Newton's 2^d Answer to P. Pardies in Numb. 85. of the Ph. Transactions; and rest assured, that the Experiment, as it is represented, was tryed in clear days, and the Prism placed close to the hole in the window, so that the Light had no room to diverge, and the colour'd Image made not parallel (as in that conjecture) but transverse to the axis of the Prism.

London, Decemb. 17. 1674.