Script for 'The Night Sky in September', 1954-09
Scope and Contents
A copy of Porter's script for 'The Night Sky in September' on the Milky Way making spectacular viewing through field glasses; Vega, Cygnus and Lyra; Albireo, a double star, and other double stars, such as Alcor and Mizar and Epsilon Lyrae; studies of William Herschel and the parallax principal applied to double stars; the discovery that some double stars are not just line-of-sight phenomena, but stars physically related and revolving about one another; the universality of the law of gravitation; Bessel and the path of Sirius in space, the companion star Sirius B, spectroscopic doubles, the origins of double stars and the differences between them; multiple stars, Epsilon Lyrae, the Pole Star and Castor; the perturbation of stars and comets by other stars; the current neglect of double star work in Britain, Herschel's tradition and his dedication.
- Creation: 1954-09
- From the Series: Porter, John Guy, 1900 - 1981 (astronomer) (Person)
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