how do we see the t.v, i mean how does it work ?

Answer 1

That could get extremely detailed, but here is a simplified explanation that can fit here.
The TV screen is a collection of little pixels, one besides the other, arranged in lines. The camera that takes the picture that is to be shown on TV grabs the image and then evaluates the color in each pixel of each line, and each lines, and sends that information as a signal. The TV receptor receiving that signal (that could have been encoded, sent by cable or through radio waves, etc) then gets a signal that essentially says "first line" followed by the description of each pixels. Then it sends the third line (the even lines are sent after the odd ones, this is what is called interlacing) and the 5th and so on until the end of the half picture. The electronics in the TV use the signal to project a beam of electron of variable intensity to a target that is made of fluorescent phosphor, that light up as a result, and you see the picture from the other side. Evidently, if your TV is a LCD or a plasma unit, the technology to actually reproduce the image varies from the old cathodic tube method, but the result is the same, you get an image.

Answer 2

a farmer was playing with two Erlermeyer flasks and coated them and sent a signal through the air using them. Philo Farnsworth invented it and the David Sarnoff stole it.

Mostly it receives signals and amplifies them like a radio. The tube has a very high voltage potential and shoots a beam of electrons at the screen. Those make phospher or other weird chemicals glow red, green or blue. Those combine to make the colors. It scans 60 times a second I think.

Answer 3

There are lots of tiny actors living inside each one. They put on shows just for you.

Roughly translated as three coloured, high energy electron beams fired onto an opaque screen at a rate which scans at twenty five frames per second over the 625 lines of screen.
Persistence of vision creates the illusion of smooth motion.

I think the actor story sounds more fun!

Answer 4

It is not the electron beams which are red, green and blue
but the dots of phosphor coating the inside of the face of the cathode ray tube.
These dots of phosphor are arranged in groups of three, one glows red, one glows green and one glows blue when excited by the electron beam. There are three electron beams, one focussed on the red dots, one on the green and one on the blue. These electron beams travel across the face of the CRT in sychronism with equivalent scans over light sensitive surfaces in the camera.
Baird mechanical scanning is not dead as although it proved unsuitable for television it is used in laser printers with the laser scanning the light sensitive drum by a rotating octagonal mirror.

Answer 5

if you're talking about digital tv, it's through the use of codecs, or compression/decompression algorithms. all powered by electrical semiconductors. These are essentially digital pulses of energy differentiated through numeric (8-bit, 16-bit) codes that identify their properties (ie, color, texture, contrast)

Answer 6

think your asking how do we see TV biologically I think not technically digital or analog .......think its just a signal passed through your eyes to your brain nothing else just like see me see you

Answer 7

Why is this in the astronomy section?

Answer 8

You plug it in and switch it on.

Answer 9

meeeeee