How did human beings develop radios and even get signals and transmissions over wires?
cn someone give the whole science behind it? how did they develop it? how did they know they could transfer signals through wires..how did they know to convert signals to transmissions? how do they use satelites and frequency in radios? etc etc…
well the 1st answer doesnt help at all…..
That would take half a day to answer so I will refer you to a couple useful links through wikipedia.
In short, the discovery of electricity led to the study of it for any purpose imaginable from communications to physical therapy to mechanics. The telegraph would transmit electrical pulses (long and short) over a conductive wire and an alphabet of dashes and dots was created to utilize this means of communications.
Radio was discovered by combining electric and magnetic waves of energy to produce an electromagnetic signal that could be tuned to transmit or receive different frequencies.
Telegraph
http://en.wikipedia.org/wiki/Electrical_telegraph
Radio
http://en.wikipedia.org/wiki/Radio
P.S. If you really want to learn about the mechanics of radio technology I suggest building one. I made one when I was younger and it was a good experience, but I believe they sell radio building kits now so it shouldn’t be as difficult gathering up all the materials.
February 5th, 2010 at 3:06 am
with brains.
References :
February 5th, 2010 at 3:51 am
That would take half a day to answer so I will refer you to a couple useful links through wikipedia.
In short, the discovery of electricity led to the study of it for any purpose imaginable from communications to physical therapy to mechanics. The telegraph would transmit electrical pulses (long and short) over a conductive wire and an alphabet of dashes and dots was created to utilize this means of communications.
Radio was discovered by combining electric and magnetic waves of energy to produce an electromagnetic signal that could be tuned to transmit or receive different frequencies.
Telegraph
http://en.wikipedia.org/wiki/Electrical_telegraph
Radio
http://en.wikipedia.org/wiki/Radio
P.S. If you really want to learn about the mechanics of radio technology I suggest building one. I made one when I was younger and it was a good experience, but I believe they sell radio building kits now so it shouldn’t be as difficult gathering up all the materials.
References :
February 5th, 2010 at 4:05 am
The base of radio’s, tv’s, sattelites, etc… is electromagnetic radiation. These radiations are just like light, microwaves, infrared, ultraviolet, only with different frequencies (or wavelengths). They are stimulated and received by those dishes that you see and receivers (i.e antenna). Same thing goes for phones… See the electromagnetic spectrum: http://en.wikipedia.org/wiki/Image:EM_spectrum.svg
References :
February 5th, 2010 at 4:27 am
Inventive bunch aren’t we.
Try googling the following names :
Tesla
Alexander Grahame Bell
Marconi
References :
February 5th, 2010 at 4:37 am
Well it all started with this guy named James Clerk Maxwell and his 4 simple equations…
References :