Electron Beam
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Televisions : Caution Of Today
Plasma TVs are 1 of probably the most commonly employed alternatives to the tradition CRT television. Plasma televisions utilize a newer technologies that allow a crisper and clearer image without the weight and bulk of traditional CRT televisions. The positive aspects of Plasma tv technologies outweighs the rewards of conventional CRT TVs by far.
Before Plasma TVs were invented televisions had been based upon CRT technology. CRT is an abbreviation for Cathode Ray Tube. CRT televisions function by firing a beam of negatively charged electrons inside of a glass tube which is housed on the inside of the television.
Plasma televisions rely on a brand new technology which unlike CRT technology does not call for the use of an electron gun to create an image. Plasma televisions illuminate substantial quantities of rather tiny dots inside the display to produce images. These tiny small dots are often referred to as pixels.
Inside a Plasma television a beam of high-powered electrons is utilized to light up the tiny dots (pixels). This procedure is just not completed with an electron gun as it is within the conventional CRT displays.
Televisions have been about for a very extended time and over the years they've continued to boost in quality, clarity, functions and functions. In response to the demand produced by users for extra technologies in these functions and features, designers and manufacturers have continued to go back to the drawing board and dream up additional methods to create televisions additional appealing.
One such function will be the built-in digital video recorder or DVR. Television shows may be recorded for later viewing, thereby eliminating the require for a VCR or other external device to record movies, shows or other programs air on television.
Illuminating the tiny pixels inside the Plasma television creates an image on the screen. Each of these three lights is often a distinctive color: 1 is red, a single is blue and a single is green. Plasma TVs vary the intensity of each of these three lights to generate an enormous range of colors.
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A current in the electron beam of a computer monitor is 320 uA...?
A current in the electron beam of a computer monitor is 320 uA. How many electrons per second hit the screen? Answer 2.0x10^15
I don't know how to get this answer.
Look up e0, the electron charge, measured in coulombs. It's about 1.60*10^-19 C. That gives:
(1 electron) / (1.60*10^-19 C) ~= 6.25*10^18 electrons/C
as a conversion factor. Since 1 ampere is 1 coulomb per second, then:
320 μA = (3.20 * 10^-6 C/s) * (6.25*10^18 electrons/C) = 2.00 * 10^15 electrons/s
MAGNETIC DEFLECTION OF AN ELECTRON BEAM
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