Related Experiment Video
Updated: Aug 18, 2026

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
William Thomson and Joseph Janvier Woodward
1Georgetown University Medical Center, Department of Ophthalmic Pathology, Armed Forces Institute of Pathology, Washington, DC, USA.
Abstract:
William Thomson and Joseph Janvier Woodward were two of several exceptionally versatile and highly productive young physicians who volunteered for service with the Union Army at the outbreak of the Civil War, and then were subsequently assigned to the Washington Area where they played significant roles and made major contributions towards the development of the Army Medical Museum. Both pioneered in photomicrography. While Thomson deserves priority, Woodward was the more prolific contributor whose work and publications helped draw attention to the Army Medical Museum as a center for excellence in pathology. After the War Thomson returned to Philadelphia where his interests in photography stimulated his pursuit of optics and eventually his becoming one of the first American physicians to specialize in ophthalmology. He became Professor of Ophthalmology at Jefferson Medical College.
Related Concept Videos
First Law of Thermodynamics
First Law of Thermodynamics
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
First Law of Thermodynamics
The applied heat increases the internal energy of a system. Hence, conventionally heat is considered...
Thomson's e/m Experiment
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
The Joule and Joule–Thomson Experiments

