How is it possible to view another person on the other side of the world through a webcam?

Baloo55th

Exactly the same way you can see someone in the next street via webcam. You make sure you're both switched on, and all the little pixels go whizzing down the wires, or up to the satellite and back down somewhere else in the case of some long distance transmissions. Nothing to do with radio or TV transmission, which is largely line of sight nowadays. (Yes, there people who listen on long wave, short wave and other odd things - most listen on VHF FM for radio and UHF for TV). It's all done by computers. And you don't have to worry about the line of sight if you listen to BBC Radio over the internet. Apr 05 05, 7:48 AM

kola123

I know that. But how is it done (technologically)? Apr 05 05, 9:31 AM

picqero

Try going to college for several years, and get a degree in electrical and telecommunications technology, with additional studies in computers and information technology, then you will understand. Otherwise, just accept Baloo's excellent answer! Apr 05 05, 2:36 PM

Baloo55th

Your webcam works sort of like a digital camera - only instead of scanning once and storing, it scans repeatedly and transmits (or stores if you've set things that way). In the 'old' film cameras, the ordinary camera let light in briefly and this affected an area of chemical. In a movie camera, this happened several times a second as the film moved, stopped, moved, stopped etc. In a digital camera, the chemical is replaced by light receptors, and pressing the button stores a certain moment's picture. Web cams and camcorders just repeat this action while the button is pressed, or the program on the computer is running. All the data is stored or transmitted as digital data that can be read anywhere there is the software capable of doing so. The rest is up to the internet, and I'm NOT explaining how that works! Apr 05 05, 3:42 PM