Input Stimuli and Output Signals in LENR Experiments David J. Nagel The George Washington University USA E-mail: nagel@gwu.edu Over the decades, a wide variety of stimuli have been put into, and diverse signals have been measured from LENR experiments. The available empirical results raise two kinds of questions: (1) of all the published effects, which might be most valuable to emphasize in future experiments, and (2) what other stimuli or signals might be used to further the understanding and commercialization of LENR? This paper addresses these questions using the organization shown in this figure. Both productive past experiments and attractive...