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A cathode is an electrode through which electrical current exits a polarized electrical device. Its opposite is the anode, through which electrical current enters the electrical device. Positively charged ions, called cations, move towards the cathode, while negatively charged ions, called anions, move towards the anode.
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What is an anticathode?
An anticathode is the opposite of a cathode - an anode.
In cathode ray tube cathode and anode rays travel opposite to each other but they are not neutralized. why?
There is no such thing as anode rays. The cathode rays (aka electron beam) just travels from cathode to anode.
What observations did Thomson make to suggest that an electron has negative electric charge?
Thomson observed that a cathode ray bent when in the presence of a magnetic field. After the cathode ray bent the opposite way when the opposite pole of the magnet was placed next to it, Thomson concluded that the cathode ray had a negative charge.
How did thomas discover the electron?
J. J. Thomson discovered the electron using an experiment involving cathode rays and a magnetic field. When subjected to the magnetic field, the cathode ray was deflected. If the magnetic field was flipped, the cathode ray was deflected in the opposite direction. This proved that a cathode ray was a stream of negatively charged particles that would later be deemed electrons.
Why flow of current from cathode to anode still the flow of electrons is from cathode to anode?
The conventional current flow from cathode to anode is a historical convention established before the discovery of electrons. Electrons, being negatively charged, actually flow from the anode to the cathode in an electric circuit. However, because the flow of positive charges is analogous to conventional current flow, it is discussed in terms of current flowing from the cathode to the anode.
What did john Thomson use to deflect the cathode rays?
he dint did nething to deflect them thet went straight to the anode +ve of the tube becoz opposite attracts.
What did scientist conclude from the fact that when an electrical current passed through a glass tube caused the surface of the tube directly across from the cathode to glow?
Scientists concluded that the glow observed on the surface of the tube opposite the cathode was due to the presence of rays emitted from the cathode. These rays were later identified as electrons, leading to the discovery of cathode rays and the development of cathode ray tubes. This phenomenon provided important insights into the behavior of charged particles in the presence of an electric field.
What observation did Thomson make to suggest that an electron has a negative electric charge?
The deflection of cathodic rays was the source of inspiration for Thomson.
Why cathode rays cast a shadow when an object is placed in their path?
Cathode rays are particles with mass and energy, which can be obstructed by solid objects in their path. When an object is placed in the path of cathode rays, the particles are blocked from passing through, creating a shadow on the opposite side of the object. This occurs because the object absorbs or scatters the cathode rays, preventing them from continuing in a straight line.
How is the formation of anode and cathode rays?
Goldstein used a gas discharge tube which had a perforated cathode. When a high electrical potential of several thousand volts is applied between the cathode and anode, faint luminous "rays" are seen extending from the holes in the back of the cathode. These rays are beams of particles moving in a direction opposite to the "cathode rays," which are streams of electronswhich move toward the anode. Goldstein called these positive rays Kanalstrahlen, "channel rays" or "canal rays", because they were produced by the holes or channels in the cathode
What is common cathode?
has common cathode
Why positive rays called canal rays?
Positive rays are called canal rays because they are positively charged particles emitted by the anode and accelerated through a small canal or channel in the cathode of a cathode ray tube. These rays were discovered by Eugen Goldstein and were later studied by J.J. Thomson.
