Radio_waves.svg
Size of this PNG preview of this SVG file:
800 × 504 pixels
.
Other resolutions:
320 × 202 pixels
|
640 × 403 pixels
|
1,024 × 645 pixels
|
1,280 × 806 pixels
|
2,560 × 1,612 pixels
|
929 × 585 pixels
.
Summary
Description Radio waves.svg |
English:
Diagram of the
electric fields
(
E
) and
magnetic fields
(
H
) of radio waves emanating from a
quarter-wave monopole
radio transmitting
antenna
(small dark vertical line in the center). The diagram is a cross section of the three-dimensional radiation pattern, which is symmetrical about the vertical axis of the antenna
(vertical dotted line)
. The lines are the electric field lines. The dots and crosses represent the magnetic field lines. The magnetic field lines are horizontal circles about the antenna axis, perpendicular to the plane of the drawing. The dots represent magnetic field lines emerging from the page, while the crosses are magnetic field lines entering the page. The E and H fields are perpendicular as implied by the phase diagram in the lower right. The electric and magnetic field patterns travel away from the antenna at the speed of light.
|
Date |
Original: 1922 |
Source |
Own work based on:
Radio waves.jpg
Original: Stuart Ballantine (1922) Radiotelephony for Amateurs, 2nd Ed. , David McKay Co., USA |
Author |
Vectorized by
Hardwigg
Original: Stuart Ballantine |
Licensing
Public domain Public domain false false |
The author died in 1944, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 75 years or fewer . This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929. |
|
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/ PDM Creative Commons Public Domain Mark 1.0 false false