Books finished in December:
(Warning: reviews are unpolished and quickly written.)

Skyfaring (2015) by Mark Vanhoenacker. Book about flying by a pilot. Often engaging to hear people talk about their passion-there should have been a little more of that here. One learns many interesting things-like inertial system and the gyroscope to measure rotation (not mechanical, a laser gyro, where a light is put into a closed path in two directions, and if the two beams do not meet at the exact opposite point, it is because aircraft has rotated) and head and tail wind at takeoff (headwind beneficial, because it gets the plane quicker to the airspeed it needs to be airborne). Short article by the author based on the book at Vox. Ok.

Ratings and previous books are in the library.