Auroræ: Their Characters and Spectra
CHAPTER XV.
Effect of Magnet on a capillary Glass Tube: pp. 147, 148.
Action of magnet on a bar of heavy glass: pp. 147, 148.
Auroræ: Their Characters and Spectra
Effect of Magnet on a capillary Glass Tube: pp. 147, 148.
Action of magnet on a bar of heavy glass: pp. 147, 148.