Empire of the Sum pt.2 March 16, 2024 Todays blog post is more Empire of the Sum Oil Painting of John Napier in 1616 Logarithm Chart Table of Logarithms Logarithm Chart in John Napier Mirifici Logarithmorum Canonis Descriptio Geometrical and Military Compass by Galileo Brass Gunter Rule Gunter Scale Slide Rule Mid Seventeenth Century Circular Slide Rule Early Twentieth Century Slide Rule Slide Rule of Dr.Sally K.Ride, first american woman in space