image MS_776_346
Image number: RS.17378
Credit: ©The Royal Society

Apparatus for determining the refraction of ice


11 February 1663


Unknown, Artist


Robert Hooke (1635-1703, British), Natural philosopher

Object type

Archive reference number

Manuscript page number




height (page): 320mm
width (page): 200mm



A figure showing a large cylindrical glass full of water with a piece of ice floating in it, and the position of the observer's eye. This accompanies a paper entitled 'Of the Refraction of Ice' by Robert Hooke. The paper was read at the meeting of the Royal Society on 11 February 1663.

The original drawing by Hooke is at Cl.P/20/11. Other copies can be found at RBO/2i/150, RBO/2ii/113, RBC/1/337 and RB/1/20/256.

This volume is another copy of entries of the first two volumes of the Register Book. It was given to Sir Joseph Banks by G. S. Heales Esquire of Doctor's Common on 31 May 1814.

Object history

At the meeting of the Royal Society on 11 February 1663, ‘An experiment of the refraction of ice was made by Mr. Hooke and an account of it given by him in writing, which was read, and ordered to be registered. He was desired to try it the next day with a glass of the same figure with the piece used by him in the experiment of this day’ (Birch 1:193).

Printed in Robert Hooke, Philosophical Experiments and Observations (London, 1726), pp. 24-26, with a much altered figure at p. 25.

Related Fellows

Robert Hooke (1635-1703, British), Natural philosopher

Associated place

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