Hess, Wilmot N., The Physics of Solar Flares, 50, (1964) (ADS)
(click on the image for a larger version)
One of the Archivist's favorite cartoons, due to Piddington.
This version was scanned from the article by T. Gold [1] in the NASA SP-50
conference proceedings (1964), a rich source of early cartoons.
The Archivist likes it not only because this portrayal of the corona
anticipates PFSS modeling, but also for the wonderful vector
equation j = anything down there in the subphotospheric domain.
There could be something profound about the RHS of this equation!
Much later this perhaps inspired a
Schrijver cartoon, which
brought some probably inappropriate tidiness to the picture.
Piddington's "dissipative sheet" calls attention to the problem of
matching the high-beta solar interior to the low-beta solar corona
through perpendicular currents, a matter still not sorted out half a
century later.
See the Bostrom cartoon for
a much earlier hint at this problem for the auroral case.
One of the Archivist's favorite cartoons, due to Piddington. This version was scanned from the article by T. Gold [1] in the NASA SP-50 conference proceedings (1964), a rich source of early cartoons. The Archivist likes it not only because this portrayal of the corona anticipates PFSS modeling, but also for the wonderful vector equation j = anything down there in the subphotospheric domain. There could be something profound about the RHS of this equation!
Much later this perhaps inspired a Schrijver cartoon, which brought some probably inappropriate tidiness to the picture. Piddington's "dissipative sheet" calls attention to the problem of matching the high-beta solar interior to the low-beta solar corona through perpendicular currents, a matter still not sorted out half a century later. See the Bostrom cartoon for a much earlier hint at this problem for the auroral case.
[1] Thomas Gold