Technical Interests

  • Theoretical and practical aspects of radiometry and calibration
  • Radiometric standards and instrumentation – design and calibration
  • Optical radiation detectors for the ultraviolet, visible and infrared
  • Self-calibration and quantum-efficient detectors
  • Ultra-low uncertainty spectrophotometry
  • Radiometric instrumentation for planetary exploration
  • Ultraviolet, visible and infrared radiometric systems
  • Radiometric temperature measurements
  • Solar and atmospheric radiometry
  • Radiometric properties of the Moon
  • Radiometric properties of materials (index of refraction, BRDF and BDTF)
  • Educating the uninformed about radiometry (SUN)
  • New methods for classroom and lab instruction


Personal Interests

  • Music: Jim played piano since the age of 3; he played trumpet for 11 years; and has performed choral music, classical, pop, and jazz for nearly 50 years. He sang in 8 states and 13 foreign countries with various groups, with notable choirs, orchestras, and conductors.
  • Ham Radio: Jim was a ham radio operator on and off since 1952 (W9WJD). He held the Amateur Extra Class license AB7AR.
  • Golden Retrievers
  • Jim also has three sons, three daughters-in-law, four grandsons, one granddaughter, two out-of-step-daughters, two out-of-step grandaughters, and an out-of-step grandson.