what is a cathode ray tube.explen?

Question

Defination, figer, construction, working,use inlife

Answer 1

Vacuum tube that produces images when its phosphorescent surface is struck by electron beams.

CRTs can be monochrome (using one electron gun) or colour (typically using three electron guns to produce red, green, and blue images that, when combined, render a multicolour image). They come in a variety of display modes, including CGA (Color Graphics Adapter), VGA (Video Graphics Array), XGA (Extended Graphics Array), and the high-definition SVGA (Super Video Graphics Array).

The cathode ray tube (CRT), invented by German physicist Karl Ferdinand Braun in 1897, is the display device that was long used in most computer displays, video monitors, televisions, radar displays and oscilloscopes. The CRT developed from Philo Farnsworth's work was used in all television sets until the late 20th century and the advent of plasma screens, LCD TVs, DLP, OLED displays, and other technologies. As a result of CRT technology, television continues to be referred to as "the tube" well into the 21st century, even when referring to non-CRT sets.

For more explaination click on following link:
http://en.wikipedia.org/wiki/Cathode_ray_tube
For figure:
http://www.bartleby.com/images/A4images/A4cathry.jpg

Graphical displays for early computers used vector monitors, a type of CRT similar to the oscilloscope but typically using magnetic, rather than electrostatic, deflection. Here, the beam traces straight lines between arbitrary points, repeatedly refreshing the display as quickly as possible.

Answer 2

crt alias picture tube is present inside monitor,tv,cro
it produces picture through electron emission by electron gun(present inside crt). it focuses electrons onto phosphor screen to make a image on screen

Answer 3

http://en.wikipedia.org/wiki/Cathode_ray_tube