Radio waves

Författare/Upphovsman:

Vectorized by Hardwigg
Original: Stuart Ballantine

Kreditera:

Eget arbete baserat på: Radio waves.jpg
Original: Stuart Ballantine (1922) Radiotelephony for Amateurs, 2nd Ed., David McKay Co., USA

Kort länk:

https://sewiki.info/b/c69c5

Källa:

Wikimedia Commons

Upplösning:

929 x 585 Pixel (348175 Bytes)

Beskrivning:

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.

Licens:

Public domain