Ruhl received a BS in physics from the University of Michigan in 1987 and a Ph.D. in physics from Princeton in 1993.[1] While a graduate student at Princeton, Ruhl, along with several other graduate students, co-authored the text Princeton Problems in Physics.[2] His doctoral dissertation, A search for anisotropy in the Cosmic Microwave Background Radiation, was supervised by Mark Dragovan.[3]
Ruhl was named a Fellow of the American Physical Society (APS) in 2005, after a nomination from the APS Division of Astrophysics, "for his fundamental experimental contributions to the study of the cosmic microwave background radiation".[8] In 2016, Case gave him their John S. Diekhoff Award for Distinguished Graduate Student Mentoring.[9]
^Holstein, Barry R. (May 1992). "Review of Princeton Problems in Physics with Solutions". American Journal of Physics. 60 (5): 477–478. Bibcode:1992AmJPh..60..477N. doi:10.1119/1.16855.