Passes along a report that someone took a 4-foot telescope to the top of Snowdon [mountain], from where he could see the eight satellites of Saturn and the rings of Neptune.
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Passes along a report that someone took a 4-foot telescope to the top of Snowdon [mountain], from where he could see the eight satellites of Saturn and the rings of Neptune.
Is working on a problem in polarized light, and finds his result disagreeing with F. J. D. Arago's third law; leads JH to think light cannot be undulatory in nature.
Comments on GA's explanations about polarized light, and discusses GA's idea of the nature of light [see GA's 1865-10-18].
Realizes that GA is quite correct [see GA's 1865-10-30]; JH had neglected a basic principle about interference.
Saddened by the poor treatment of W. H. Smyth [see GA's 1865-10-18].
Concerning JH's memorial to W. R. Hamilton's daughter. Holiday in Keswick. Comments on JH's papers on optics and force.
Writes about a long standing, very old, member of the Royal Observatory's Board of Visitors [W. H. Smyth] having been summarily dismissed from the Board.
Explaining JH's polarization difficulty [see JH's 1865-10-16].
Printed address of the Astronomer Royal to individual members of the Board of Visitors of the Royal Observatory.
Further regarding polarized light and its interferences.