Lunar ranging

Interviewed by
Joan Bromberg
Interview date
University of Maryland, College Park, Maryland

Interview discusses the "delayed choice" experiment carried out in the first part of the 1980s. Also touches on Alley's relations with John Archiball Wheeler, equipment invented for the experiement or adapted for it from previous work on lunar ranging and atomic clocks, and the experiment's role as precursor to Yanhua Shih's experiments using photons apron spontaneous parametric down convers in.