A word of caution: it was first published in 1944 and the language style is a bit dated. As a result, the reading requires a bit of concentration. I don't recommend the book for light reading by people not deeply interested in physics and/or aviation.

Highly recommended for pilots and physics/aviation enthusiasts. All others just buy me a beer and ask me how a plane flies -- you'll get the (slightly) condensed version in today's vernacular.