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Radio waves high flyers, Washington, D.C., Oct. 1. Experiments conducted by H.W. Wellex at the radio station of the Carnegie Institution have proven that radio waves travel a distance of 80 miles heavenword before they are reflected back to earth. Traveling like lightning as they ascend in to the ionosphere the radio impulses have to be measured in 10,000ths of second to accurately check the height reached before they return to the radio set
Photoelectric ray to determine flying ceiling. Washington, D.C., June 15. To permit a ground observer to determine at what height flying is safe during days of fog and heavy overcast, Miss Elizabeth M. Zandonini, of the Radio Section staff of the Bureau of Standards, is shown with the balloon transmitting equipment. A photoelectric cell measuring light brightness is used to control the pitch of the radio signal transmitted from the balloon as it ascends. A graphical frequency recorder plots the pitch and hence [...] a measure of the light brightness as a function [...] height. The experiments are carried on for the U.S. [...]
Photoelectric ray to determine flying ceiling. Washington, D.C., June 15. To permit a ground observer to determine at what height flying is safe during days of fog and heavy overcast, Miss Elizabeth M. Zandonini, of the Radio Section staff of the Bureau of Standards, is shown with the balloon transmitting equipment. A photoelectric cell measuring light brightness is used to control the pitch of the radio signal transmitted from the balloon as it ascends. A graphical frequency recorder plots the pitch and hence ... a measure of the light brightness as a function ... height. The experiments are carried on for the U.S. ...
Defends use of high-powered radio stations, Washington, D.C. Oct, 7. Appearing before the Federal Communications Commission today, Powell Crosley, Jr., of the Crosley Radio Corp., defended the use of high-powered broadcasting stations. The Crosley Corporation operates station WLW at Cincinnati, Ohio, which is operated on 500 kilowatts, the highest in the country. High-powered station cause no serious or damaging interference to the reception of other stations, Crosley added. He is shown in this photograph with Anning S. Prall (right) chairman of the FCC
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Defends use of high-powered radio stations, Washington, D.C. Oct, 7. Appearing before the Federal Communications Commission today, Powell Crosley, Jr., of the Crosley Radio Corp., defended the use of high-powered broadcasting stations. The Crosley Corporation operates station WLW at Cincinnati, Ohio, which is operated on 500 kilowatts, the highest in the country. High-powered station cause no serious or damaging interference to the reception of other stations, Crosley added. He is shown in this photograph with Anning S. Prall (right) chairman of the FCC
Radio wave propagation experiments
Radio wave propagation experiments
Radio wave propagation experiments
Radio waves high flyers, Washington, D.C., Oct. 1. Experiments conducted by H.W. Wellex at the radio station of the Carnegie Institution have proven that radio waves travel a distance of 80 miles heavenword before they are reflected back to earth. Traveling like lightning as they ascend in to the ionosphere the radio impulses have to be measured in 10,000ths of second to accurately check the height reached before they return to the radio set
Summary
Public domain photograph of people in office, interior, the 1910s-1920s America, free to use, no copyright restrictions image - Picryl description
- Radio waves high flyers, Washington, DC, Oct. 1 ... - Alamy
- 80 h Black and White Stock Photos & Images - Alamy
- Lightning like Black and White Stock Photos & Images - Alamy
- Back of a check Black and White Stock Photos & Images - Alamy
- Las ondas de radio de alta flyers, Washington, DC, el 1 de ... - Alamy
- 80 a d Imágenes de stock en blanco y negro - Alamy
- A radio station fotografías e imágenes de alta resolución - Página 14
- Estacion de ionosfera fotografías e imágenes de alta resolución
- negro Maldición Quagga Encarnar Citar conveniencia 80 radio station
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Tags
district of columbia
washington dc
glass negatives
radio
waves
radio waves
flyers
experiments
wellex
station
radio station
carnegie
institution
carnegie institution
travel
radio waves travel
distance
miles
heavenword
miles heavenword
earth
ionosphere
impulses
radio impulses
ths
check
height
return
united states history
library of congress
Date
01/01/1936
Contributors
Harris & Ewing, photographer
Location
Washington, District of Columbia, United States
,
38.90719, -77.03687
Source
Library of Congress
Link
Copyright info
No known restrictions on publication.