Which one of the following is not electromagnetic in nature?
Which one of the following is not electromagnetic in nature?
The correct option is A Cathode-rays
Cathode-rays is not electromagnetic in nature.
Cathode rays (electron beam or e-beam) are streams
of electrons observed in vacuum tubes. If an evacuated glass tube is equipped
with two electrodes and a voltage is applied, glass behind the positive
electrode is observed to glow, due to electrons emitted from and traveling away
from the cathode (the electrode connected to the negative terminal of the
voltage supply). They were first observed in 1869 by German physicist Johann
Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or
cathode rays.In 1897, British physicist J. J. Thomson showed that cathode rays
were composed of a previously unknown negatively charged particle, which was
later named the electron. Cathode ray tubes (CRTs) use a focused beam of
electrons deflected by electric or magnetic fields to create the image on a
television screen.
The electromagnetic force usually exhibits
electromagnetic fields such as electric fields, magnetic fields and light, and
is one of the four fundamental interactions (commonly called forces) in nature.
The other three fundamental interactions are the strong interaction, the weak
interaction and gravitation.
Cathode-rays is not electromagnetic in nature.
Cathode rays (electron beam or e-beam) are streams of electrons observed in vacuum tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from and traveling away from the cathode (the electrode connected to the negative terminal of the voltage supply). They were first observed in 1869 by German physicist Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays.In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to create the image on a television screen.
The electromagnetic force usually exhibits electromagnetic fields such as electric fields, magnetic fields and light, and is one of the four fundamental interactions (commonly called forces) in nature. The other three fundamental interactions are the strong interaction, the weak interaction and gravitation.
