Concerning JH's memorial to W. R. Hamilton's daughter. Holiday in Keswick. Comments on JH's papers on optics and force.
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Concerning JH's memorial to W. R. Hamilton's daughter. Holiday in Keswick. Comments on JH's papers on optics and force.
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.
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.
Comments on GA's explanations about polarized light, and discusses GA's idea of the nature of light [see GA's 1865-10-18].
Saddened by the poor treatment of W. H. Smyth [see GA's 1865-10-18].
Further regarding polarized light and its interferences.
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.
Realizes that GA is quite correct [see GA's 1865-10-30]; JH had neglected a basic principle about interference.