Dalhousie Physics

1838 - 1956

Halifax, N.S.
March, 1971

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GA 1971 Audio

Audio recordings from the 1971 General Assembly hosted by the Hamilton and Niagara Centres.  The paper session, COCOCA report (and following discussion), and annual meeting were recorded.

Many Society members can be heard: Peter Broughton, Ken Chilton, Ralph Chou, Cyril Clark, David Dodge, Bob Doran, Doug Gies, Norman Green, Lloyd Higgs, David Hurd, Jack Locke, Richard McWatters, Dora Russell, Ernie Seaquist, Henri Simard, Peter Tattersall, G.A. Thede, Bob Winder, Robert J. Wood.

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Henri Simard 19710522

M. Henri Simard. RASC President 1970-72. Photo taken at McMaster University, 1971 May 22. Photo by Norman Green.

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The Minor Planets

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Observing Mars in 1971

In 1971, the planet Mars will attract considerable attention, from laymen and from astronomers. For, this is the year in which Mars reaches its minimum distance from the Earth, some 35 million miles on August 10. No doubt, the press will publish a full quota of stories about canals, life on Mars, and whether or not the two moons of Mars are, in fact, satellites put into orbit by a long vanished race. There will invariably be the usual rash of flying saucer tales as is customary in years of close approach.

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The Fixed Stars

The Fixed (?) Stars

At a recent astronomical seminar, I was reminded by a speaker that our term, the “fixed stars” is not really correct. Stars do move across the sky, their motion being a combination of two measurable quantities, "radial velocity”, or motion in the line of sight, and "proper motion", motion across the line of sight. These motions are extremely slow, although they can be measured with accurate astronomical instruments. To the unaided eye, however, the stars appear to be stationary, unless studied over a lengthy period of time.

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GA Group Photo - 1971

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