Sunspots as omens : Russian and Chinese observations
The roots of Western cosmology : Mesopotamia, Greece, and Islam
Medieval Europe and the Islamic Empire : where have all the sunspots gone?
The invention of the telescope : sunspots as heresy
After Galileo : sunspots as windows into the sun and omens of weather
Discovery of the solar cycle : sunspots as clocks
The business cycle : sunspots as economic indicators
Solar spectroscopy : sunspots as magnetometers
The sun and the weather : sunspots as meteorlogical omens
Twentieth-century business cycle : solar cycle theories
Sunspots, the solar wind, and the sun-Earth connection
The sun's energy source : solar oscillations and neutrinos
Sunspots today : current theories of the solar cycle and the sun-Earth connection
Appendix A: Electric and magnetic fields
Appendix B: Atoms and their spectra
