- published: 03 Nov 2012
- views: 215039
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths from 1 millimeter to 100 kilometers. Like all other electromagnetic waves, they travel at the speed of light. Naturally occurring radio waves are made by lightning, or by astronomical objects. Artificially generated radio waves are used for fixed and mobile radio communication, broadcasting, radar and other navigation systems, satellite communication, computer networks and innumerable other applications. Different frequencies of radio waves have different propagation characteristics in the Earth's atmosphere; long waves may cover a part of the Earth very consistently, shorter waves can reflect off the ionosphere and travel around the world, and much shorter wavelengths bend or reflect very little and travel on a line of sight.
Radio waves were first predicted by mathematical work done in 1867 by James Clerk Maxwell. Maxwell noticed wavelike properties of light and similarities in electrical and magnetic observations. He then proposed equations that described light waves and radio waves as waves of electromagnetism that travel in space. In 1887, Heinrich Hertz demonstrated the reality of Maxwell's electromagnetic waves by experimentally generating radio waves in his laboratory. Many inventions followed, making the use of radio waves to transfer information through space.
Well baby since I met you, I've never been the same
There's never been a woman made me feel this way
And I know days are harder, and I know things have changed
But baby goodbye you know I just can't say
Where'd all the love go
I need you to know
I'm singing out to you
Tell me there's something I can do
Radio waves, can you hear me singing out
I've got something to say
Can't you hear I need you now
I'm calling on the two of us so we can be saved
Listen to my radio waves
Clear across the city, you're lying in your bed
Here I am regretting every word unsaid
The only way I know to help you understand
Is say what's going on the only way I can
Broadcast over FM
Here we are again
I'm singin' out to you
Tell me there's something we can do
Radio waves, can you hear me singing out
I've got something to say
Can't you hear I need you now
I'm calling on the two of us so we can be saved
Listen to my radio waves
Radio waves, can you hear me singing out
I've got something to say
Can't you hear I need you now
I'm calling on the two of us so we can be saved
Listen to my radio waves
Listen to my radio waves
Love on the Radio, Love on the radio
(ooohhh, ooohhh)
Love on the Radio, Love on the radio
(ooohhh, ooohhh)
Love on the Radio, Love on the radio