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What subatomic particle was discovered with the use of a cathode ray tube?
Wiki User
∙ 9y ago
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.
Wiki User
∙ 9y ago
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Who discover subatomic particle?
There are 3 subatomic particles in an atom, electrons, protons, and neutrons. The first discovered was the electrons by J.J. Thomson in 1897. The second discovered was the protons by Ernest Rutherford in 1919. The third discovered was the neutrons by James Chadwick in 1932.
Why are electrons called electrons?
Because the name used to be "Corpuscles" as when J.J. Thompson called it using his cathode ray tube experiment, but the name was later renamed to electron. "elec" I think has something to do with negative charge and "tron" is the regular ending of a name of a particle in an atom.
What was television called in the olden days?
It was called the Television but when first coined it was called the "Cathode tube" which as we know was actually only part of the device
How do you accelerate electrons?
A good way to accelerate electrons is with voltage. The higher the voltage, the more acceleration. Vacuum tubes do this. Like the cathode ray tube (or picture tube) in a conventional television. Electrons stream from the electron guns at the back of the tube to the phosphor coating on the inside of the face of the glass in front. The intervening space is highly evacuated. Electrons scatter terribly when striking anything, even gas atoms in air. We can really accelerate the electrons when we hit them with good ol' high voltage. In an x-ray generating tube the effects are even more dramatic. Amazing what a few extra tens of thousands of volts will do to speed the little guys up across the evacuated space between the elements of the x-ray tube. Oh, but there's a problem. Once speeded up like that, the electrons will eventually slow down by scattering. And when the highly accelerated electrons in the x-ray tube strike the metal target plate, they generate (surprise!) x-rays. And x-rays aren't to be fooled around with. They are penetrating ionizing radiation. There are linear and circular particle accelerators that can ramp up the speed of these little guys much more than can be accomplished in a vacuum tube, but it's hazardous work. More energetic x-rays can be generated by blasting a target in an accelerator with high speed electrons, and shielding in the target buildings of these facilities is yards thick. As an aside, particle accelerators are usually used to speed up protons, antiprotons and heavy ions and slam them around. Particle physics requires more work in those areas. Electron scattering is understood a little better than other aspects of nuclear physics, so there are limits on the amount of research using accelerators to speed up electrons. Think about it this way. An electron is to a proton something like a table tennis ball is to a bowling ball. Which one do you want to slam into stuff to see what happens, hmm?
Can an electron at rest be set in motion by the magnetic field?
Sure. A charge in a magnetic field experiences a force. A force acting on a mass produces acceleration. Remember the old-style TV sets that were about 6 feet deep from front to back ? That type of picture tube is called a 'CRT', for "cathode-ray tube'. There's a hot wire at the back end of the picture tube that produces a cloud of electrons. The front face of the picture tube has a high positiver voltage on it, to attract the negative electrons to the front. On the way there, the electrons have to go through these magnet coils that are around the neck of the picture tube. The magnetic field inside the neck pulls the stream of electrons left and right, up and down, left and right, and that's how they draw a picture on the front face when they get there.
Which particle did j.j. Thomson discover?
The first discovery of a subatomic particle would come in 1897, when J.J. Thompson first discovered evidence for the existence of the electron.
What was the experimental evidence that Thomson had discovered the existence of a subatomic particle when working with cathode rays?
Thomson discovered the electron and proved that it existed without ever being able to see or isolate one. Electrons were the first subatomic particles to be discovered, the first particle of matter identified that was smaller than an atom. This discovery also finally provided some physical proof of, and description of, the basic unit that carried electricity. Thomson attached thin metal plates inside his cathode ray tube to a battery and showed that an electrical field could also deflect cathode rays.
What following piece of equipment was used by jj Thomson to find electrons?
JJ Thomson discovered electrons using a cathode ray tube.
What particle was found using a cathode ray tube?
British scientist Sir Joseph J. Thomson discovered in 1897 that cathode rays were made up of what are now known as electrons.
Who discovered CRT?
cathode ray-tube was discovered by J.J. thomson.
What is the modern day name for cathode ray tube?
The Cathode Ray Tube is called CRT, but I don't know of any "modern day" name. I know it was discovered by J.J. Thomson, who discovered electrons through the Cathode Ray Tube.
Who discover the cathode ray?
The cathode ray tube was not discovered it was invented by Ferdinand Braun
Which of these was not discovered using the cathode ray tube?
Electrons
What did jj thomas discover?
J.J.Thomas discovered that atoms have negatively charged particles called electrons. He discovered this using the Cathode Ray. The cathode ray is a beam of electrons emitted by the cathode of an electrical discharged tube.
What is Thompson's cathode ray?
homson conducted a series of experiments with cathode rays and cathode ray tubes leading him to the discovery of electrons and subatomic particles. Thomson used the cathode ray tube in three different experiments.
Who discovered negatively charged electrons using a cathode ray tube?
JJ Thomson.
Which scientist did experiments involving a form of cathode ray tube?
It was the investigator J. J. Thomson who did experiments with an early cathode ray tube. You'll find a link below.
