- published: 07 May 2016
- views: 1208491
Radio is the transmission of signals through free space by electromagnetic waves with frequencies significantly below visible light, in the radio frequency range, from about 3 kHz to 300 GHz. These waves are called radio waves. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space.
Information, such as sound, is carried by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
The etymology of "radio" or "radiotelegraphy" reveals that it was called "wireless telegraphy," which was shortened to "wireless" in Britain. The prefix radio- in the sense of wireless transmission, was first recorded in the word radioconductor, a description provided by the French physicist Édouard Branly in 1897. It is based on the verb to radiate (in Latin "radius" means "spoke of a wheel, beam of light, ray").
Plus may refer to:
All down the AM and all up the FM dail
Tired of hearin' songs about nothin at all
Beauty thats skin deep
Love that comes so cheap
THere sing so pretty bout nothin at all
All day long I hear the same 5 songs and the words go
Blah Blah Blah
CHORUS
The radio plays a whole lot of nothin
Wish that they'd play a song about somethin
Cuz all that you hear is so insincere
But its comin in crystal clear
Perfect productioan without innteruption
And everybody loves it because it sounds so sweet
They glorify sin
They sell sex
And then they all say Jesus in their thank you speech
God gave us music so we should use it
to sing with all our heart about the way you feel
Sing about love or whatever you think of
It doesnt really matter Just make it real