British Astronomical Association

Supporting amateur astronomers since 1890

Journal of the British Astronomical Association. Vol.31 No.6

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  • -1BAA Journal - VOL. 31 (XXXI). No. 6. April 1921
  • 25CORRESPONDENCE
  • 3REPORTS OF THE BRANCHES
  • 3WEST OF SCOTLAND BRANCH (GLASGOW).
  • 4REPORTS OF THE OBSERVING SECTIONS
  • 4Aurorae and Zodiacal Light Section.
  • 4Aurora
  • 4Zodiacal Light.
  • 6Mercury and Venus Section
  • 5Aurorae. 1919-1920.
  • 9Saturn Section.
  • 16PAPERS
  • 16Bright Wire Illumination.
  • 19The Testing of Parabolic Reflecting Mirrors.
  • 21Occultation of a Double Star by Jupiter.
  • 23Occultation of a close Double Star by the Moon.
  • 1REPORT OF THE MEETING OF THE ASSOCIATION HELD ON WEDNESDAY, MARCH 30, 1921
  • -1Contents.
  • 25COMET NOTES
  • 31A MODIFICATION OF THE REVOLVING MIRROR METHOD FOR MEASURING THE VELOCITY OF LIGHT
  • 27SATURN
  • 31THE RELATION OF PROLONGED TROPICAL DROUGHTS TO SUNSPOTS
  • 31A VERTICAL INTERFEROMETER
  • 27THE INTERNAL CONSTITUTION OF THE STARS
  • 30ADVANCE OF THE PERIHELION OF A PLANET
  • 32ON THE APPLICATION OF INTERFERENCE METHODS TO ASTRONOMICAL MEASUREMENTS
  • 25OCCULTATION OF A TRIPLE STAR BY MARS
  • 25FRENCH PLATE GLASS
  • 32CHARACTER OF GLASS-PLATE SURFACE
  • 33THE FIZEAU-EFFECT IN SOLID SUBSTANCES
  • 33ISAAC NEWTON STUDENTSHIP
  • 33NOTICES
  • 33Affiliated Schools. 30th March, 1921.
  • 33ffiliated Schools. 30th March, 1921.
  • 25NOTES
  • 34Candidates for Election as Members of the Association. 27th April, 1921.
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