By S. Chandrasekhar, Space
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Extra resources for An introduction to the study of stellar structure
18 A schematic diagram of the simple two-element Michelson interferometer, from Stanley and Slee (1950). Within a few years after 1950 most radio interferometry was done using Michelson interferometers (Australian Journal of Scientific Research, Series A, vol 3, page 234, 1950, “Galactic Radiation at Radio Frequencies, II. The Discrete Sources”, Fig. htm) Slee. One hundred and four discrete sources (often called “radio stars” in this era) were detected. In reality radio nebulae were detected not the radio emission of stars.
Joan Freeman was in the chorus. The 18 year old Sutherland auditioned for a part and was rejected (confirmed by a letter from Dame Joan to Goss, April 2007). It appears that this rejection had no adverse effect on her career; already in 1947 she had made her stage debut in Sydney as Dido in Purcell’s Dido and Aeneas. Chapter 2 A Brief, Basic Guide to Terms and Concepts of Solar Radio Astronomy The Astronomers’ Sun Humanity has observed the sun for many centuries. Among the millions of stars observable through optical telescopes, only the sun is close enough to be studied in all of its activity, in exquisite detail.
7 m. 6 cm. (b) The Parkes radio telescope in 1968. This Ken Nash publicity photo is a prominent icon in Australia (CSIRO Radio Astronomy Image Archive, 8886-1). (c) The Parkes radio telescope at the time of the 50th anniversary 31 October 2011. The new panels continue the progress over the last 50 years of improving the surface of the antenna to increase sensitivity at the higher frequencies (up to 1 cm). In order to support the NASA missions to Mars in 2003–2004 the mesh panels in the range 45 to 54 m were replaced with solid panels.
An introduction to the study of stellar structure by S. Chandrasekhar, Space