. Basic semiconductor circuitry for ecological and behavioral studies of insects. Insects Behavior Research; Insects Ecology Research. I 1000 Figure 5•--Two-transistor control relay, utilizing an A 15-M selenium photovoltaic cell for the light control. vvwvv 100 K V ducer. RECORDER 6 Figure pressure-sensitive transducer mounted between a com earworm moth's wings to record force of wing beat above back. The 100,000-ohm, variable rheostat allows for calibration of range extremes on the recorder. - 12 -. Please note that these images are extracted from scanned page images that


. Basic semiconductor circuitry for ecological and behavioral studies of insects. Insects Behavior Research; Insects Ecology Research. I 1000 Figure 5•--Two-transistor control relay, utilizing an A 15-M selenium photovoltaic cell for the light control. vvwvv 100 K V ducer. RECORDER 6 Figure pressure-sensitive transducer mounted between a com earworm moth's wings to record force of wing beat above back. The 100,000-ohm, variable rheostat allows for calibration of range extremes on the recorder. - 12 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Callahan, Philip S. , 1923-; United States. Entomology Research Division. Beltsville, Md. : U. S. Dept. of Agriculture, Agricultural Research Service


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