Peter D Usher

Peter D. Usher is Emeritus Professor of Astronomy and Astrophysics at The Pennsylvania State University. He received his MSc from the University of the Free State in South Africa and his PhD from Harvard. He is the author of Hamlet's Universe and Shakespeare and the Dawn of Modern Science and has published more than one hundred papers in peer-reviewed journals. His research accomplishments include the analytic derivation of the equations of invariant imbedding, the discovery of the renormalized...See more

Peter D. Usher is Emeritus Professor of Astronomy and Astrophysics at The Pennsylvania State University. He received his MSc from the University of the Free State in South Africa and his PhD from Harvard. He is the author of Hamlet's Universe and Shakespeare and the Dawn of Modern Science and has published more than one hundred papers in peer-reviewed journals. His research accomplishments include the analytic derivation of the equations of invariant imbedding, the discovery of the renormalized Poincare-Lighthill perturbation expansion, a generalization of the method of shoot and fit, and a survey of medium-bright quasars. His papers on Shakespeare and science have appeared in The Elizabethan Review, The Oxfordian, and The Shakespeare Newsletter. See less