R. J. Bray

1929

• Sunspots
• Plasma loops in the solar corona
• Plasma Loops in the Solar Corona
• The solar chromosphere
• The solar granulation
• Pivots and caps in compasses
• Sunspots
• Sunspots
• Sunspots [by] R.J. Bray and R.E. Loughhead
• The solar granulation [by] R.J. Bray and R.E. Loughhead