Karl jansky biography
What did karl jansky discover...
Karl Guthe Jansky was born in Norman Oklahoma October 22, 1905 (d.Feb.14, 1950), graduated with a degree in physics from the University of Wisconsin, and joined the staff of the Bell Telephone Laboratories in Holmdel, NJ, in 1928.
Bell Labs wanted to investigate using "short waves" (wavelengths of about 10-20 meters) for transatlantic radio telephone service.
Karl jansky antenna
Jansky was assigned the job of investigating the sources of static that might interfere with radio voice transmissions.
He built an antenna, pictured here, designed to receive radio waves at a frequency of 20.5 MHz (wavelength about 14.5 meters).
It was mounted on a turntable that allowed it to rotate in any direction, earning it the name "Jansky's merry-go-round". By rotating the antenna, one could find what the direction was to any radio signal.
After recording signals from all directions for several months, Jansky identified three types of static:
1.
nearby thunder
