Word: oscillographs
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Warning Wiggles. Working with infinite care, Roeder and Treat took a live moth, attached delicate wires to the nerves leading out of one of its ears, and connected the little insect to an amplifier and an oscillograph. Then they turned on an electronic generator that gave out brief bursts of ultrasonic sound-a reasonable imitation of a prowling bat. Even where the man-made beeps were too weak to be detected by man-made microphones, the moth's ear responded with electrical signals. When the imitation bat sounded louder, as if it were closing in, the moth...
...moth's sonar-detecting apparatus in the laboratory, Roeder and Treat tried it out in the field against real bats. They set up their apparatus on a Massachusetts hillside, and at nightfall their wired moth began to detect the ultrasonic cries of bats. From the traces on their oscillograph, the biologists could tell whether an invisible bat was approaching or flying away. Later, when Roeder and Treat turned on a powerful floodlight, they could watch the bats diving on their prey and hear, through the captive moth's ear, the bats' searching sonar beeps and their final...
...doughnut of magnet steel, 656 ft. in outside diameter. Last week British Physicist John B. Adams, chief of CERN's Proton Synchrotron Division, ordered slight corrections in the magnetic field, watched as the protons sped faster and faster around their circular track inside the doughnut, triumphantly saw the oscillograph's curve reach 29 Bev, putting CERN's machine far ahead of the ten-Bev Russian accelerator at Dubna...
...test his hunch, Lissmann touched the water with two electrodes connected with an oscillograph. When the two-way fish swam near, a series of regular electrial pulses showed on the oscillograph een. Then Lissmann dipped ends of a copper wire into .the aquarium. The little fish fled in terror, its radar apparently mistaking the wire for a bigger and hostile fash. It also fled from a wire carrying artificial electric pulses. But when Professor Lissmann fed its own pulses back into the water, the fish attacked the electrodes presumably taking them for a rival of its own species...
Repeating Dr. Donald Griffin's experiment [for his sonar navigation experiments, he used bats which had been made to hibernate in a humidified refrigerator-TIME, May 1], I removed a bat from my belfry, chucked him in my refrigerator, rigged my oscillograph, and turned him loose...