Problems in astrophysics

The work opens with a lively preface that frames astrophysics as a frontier of discovery, inviting readers to explore the “strips and corners” of ignorance that still beckon scholars. Written in the early twentieth century, it captures the optimism of an era when observatories dotted the globe and new instruments promised deeper insight into the heavens. The author’s tone is both scholarly and encouraging, positioning the book as a guide for those who love truth for its own sake.

Inside, the text is organized into two main sections—solar physics and sidereal physics—each packed with detailed discussions of topics such as the solar spectrum, sun‑spots, stellar classification, and the mysterious bright lines that mark certain stars. Over eighty illustrations accompany the explanations, helping listeners visualize the nebulae, spectra, and celestial phenomena that were cutting‑edge at the time. While the focus stays on the physics of stars and the Sun, the author deliberately sets aside planetary and cometary subjects to keep the narrative tightly centered on stellar matter.