Show Radar System Guides Bats Contrary to popular superstition tion bats see better during the day than they do at night nor night nor norare are they likely to deliberately fly into miladys milady's hair since they de de- detect detect detect obstacles in their path by means of an echo warning system system tem tern which whid is similar to radar This echo system and the bats bat's own signa voice lies in a wave band of cycles cycles cycles-at at atthe the rate of 30 times a second second- and is inaudible to the human ear which can detect only those sounds that are in the wave band of 20 cycles |