The article “Leonardo da Vinci’s Visualization of Gravity as a Form of Acceleration,” published in the aptly named journal Leonardo (peer-reviewed, MIT Press Direct), has gained some fame, as it has appeared in many news articles. The authors claim that Leonardo understood gravity almost as well as Newton, and even suggest that he anticipated Einstein’s equivalence principle. José María González Ondina presents a more likely interpretation, based on Leonardo’s own manuscripts, that negates these incredible claims.
