JF Ptak Science Books

On Getting "E=mc^2" Wrong, Twice in 1.5 Square Inches

Colossus in the Colosseum

Birds and Human Flight

Cross-Section of an Arctic-Exploring Balloon, 1890

The Goubet Submarine, 1886

A Monumental and Fantastically Bad Idea: Lowering the Mediterranean (1929)

Two Uncommon Crowd Scenes, 1932 and 1945.

Mathematical Exercises and Found Art

Bridges Never Built: the Hudson River Bridge (Midtown) 1896

An Episode in Antiquarian Depiction of Upside Down Things (1506)