KNIFE EDGE DIFFRACTION
CD 2055064 E&MP7.002
March 21, 1962
Computer communications engineer shows typical path of microwave signals that are diffracted by mountain ridge to over-the-horizon destinations.
IBM is using this knife-edge diffraction technique to transmit computer data between Monterey and San Jose.
The low-power requirement of the link results in smaller transmission and receiving equipment such as the 10-foot diameter receiver shown behind the engineer at IBMs San Jose Advanced Systems Development Division Laboratory.
Original Caption by Science Service