The new and the old methods complete one another on numerous points, and their simultaneous use will increase our knowledge of the outer atmosphere of the Sun much more rapidly.


The study of the solar corona and prominences without eclipses (George Darwin Lecture) in Monthly Notices of the Royal Astronomical Society (1939).


The new and the old methods complete one another on numerous points, and their simultaneous use will increase our knowledge of the outer atmosphere...

The new and the old methods complete one another on numerous points, and their simultaneous use will increase our knowledge of the outer atmosphere...

The new and the old methods complete one another on numerous points, and their simultaneous use will increase our knowledge of the outer atmosphere...

The new and the old methods complete one another on numerous points, and their simultaneous use will increase our knowledge of the outer atmosphere...