Electromagnetic Radiation Effect on Foraging Bats - Recent Advances and Issues in Environmental Science - page 69

Figure 2. The response of bats to: (a) short pulse length (0.08 μs) radar signal from a rotating antenna.
(b) short pulse length (0.08 μs) signal from a fixed antenna. (c) medium pulse length (0.3 μs) signal
from a fixed antenna. Each bar represents the difference in bat counts (the number of times that
ultrasound was detected by the automatic bat recording stations) between control and experimental
trials. A negative value indicates that bat activity was higher during the control trial than during the
experimental trial when the radar was switched on.