The television picture tube receives video signals from the tuner and translates the signals back into images. The images are created by an electron gun in the back of the picture tube, which shoots a beam of electrons toward the back of the television screen. A black-and-white picture tube contains just one electron gun, while a color picture tube contains three electron guns, one for each of the primary colors of light (red, green, and blue). Part of the video signal goes to a magnetic coil that directs the beam and makes it scan the screen in the same manner as the camera originally scanned the scene. The rest of the signal directs the strength of the electron beam as it strikes the screen. The screen is coated with phosphor, a substance that glows when it is struck by electrons. The stronger the electron beam, the stronger the glow and the brighter that section of the scene appears. In color television, a portion of the video signal is used to separate out the three color signals, which are then sent to their corresponding electron beams. The screen is coated by tiny phosphor strips or dots that are arranged in groups of three: one strip or dot that emits blue, one that emits green, and one that emits red. Before light from each beam hits the screen, it passes through a shadow mask located just behind the screen. The shadow mask is a layer of opaque material that is covered with slots or holes. It partially blocks the beam corresponding to one color and prevents it from hitting dots of another color. As a result, the electron beam directed by signals for the color blue can strike and light up only blue dots. The result is similar for the beams corresponding to red and green. Images in the three different colors are produced on the television screen. The eye automatically combines these images to produce a single image having the entire spectrum of colors formed by mixing the primary colors in various proportions.
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Electrons, being charged particles, are controlled by magnetic fields.
The electron gun was the source of the electrons, which, when heated and formed into a beam, were directed to differing parts of the screen by magnetic fields surrounding the envelope
The envelope, which was usually made of glass, was a funnel-shaped element through which the electrons were fired toward the faceplate on the broad end of the envelope
Electrons are in atoms found even in the human body.
There is no such thing as anode rays. The cathode rays (aka electron beam) just travels from cathode to anode.
basically JJ Thomson wanted to find out what a cathode ray was made of. Cathode tubes are a tube with wires in them. Scientists discovered that if the created a vacuum in the tube and sent a charge through the wires, it glowed. JJ Thomson set up a cathode ray and placed magnets on either side. This deflected the ray so the tube didn't glow. This meant the rays were negatively charged which meant they were made of negatively charged particles or electrons.
Cathode ray tube amusement device was created in 1947.
J.J. Thomson used the cathode ray. Thomson's cathode ray experiment was when he shot a narrow beam of electrons through a cylindrical tube and deflected the electrons off of electric and magnetic fields, thus measuring the effects that those fields had on the direction of the beam.
Yes they are the same. A cathode ray tube (CRT) uses an electron gun to "shoot" electrons from the cathode to specific positions on the anode of the CRT.
The cathode of an electron gun.
Electrons are in atoms found even in the human body.
This refers to when electromagnets were used rather than electrostatics to direct electron flow in a CRT (Cathode Ray Tube). Coils would be placed around the neck of the tube to influence the deflection of the cathode ray (electron flow) to the screen.
JJ Thomson discovered electrons using a cathode ray tube.
To create an electron cloud that can be shaped into a beam.
using an electron gun, an Ariel, which receives an image from the distant transmitter, and a cathode ray tube. The Ariel receives the image and the Ariel is connected to an electron gun which fires the image, using electro-magnets onto the flat screen of a cathode ray tube, which has a grille inside to guide the colours onto the screen in their right place, to reduce the ghosting effect.
The electron had already been discovered. It took little imagination to "see" that the cathode ray was the beam of electrons that originated from the cathode. And the beam was controlled using techniques based directly on what was correctly understood about the electron. The cathode ray could only be an electron beam generated at the cathode. Conventional elctric current flow is usually thought of as flowing from positive to negative, but at the quantum level; due to electrons having a negative charge; technically they really flow from negative to positive, and this is apparent in the cathode ray tube. Its the negatively charged electrons that glow in a cathode ray tube, and do so from the negative terminal, or cathode, hence the name.
The electron was discovered by using cathode ray tubes. When it was discovered that the cathode ray diverted away from the negative end of a magnet to the positive end, it revealed that there was a negative particle present in the ray.
the deflection of an electron beam in a cathode ray tube by electric and magnetic feilds.
the ratio of mass to charge for an electron. A+
A "CRT" is a cathode ray tube. An old style computer monitor (not computer).