Write the value of classical radius of electron.
ANSWER : The classical radius of an electron is a fundamental physical quantity that helps us understand the size of an electron. It is a fascinating concept in physics. Imagine the tiniest particle in the universe, the electron, as a tiny sphere. The classical radius is the distance from the centre to its outer edge of the tiny sphere i.e. the electron. The classical radius of an electron is estimated to be around 2.8 femtometers (or 2.8 x 10 -15 meters). It's like comparing the size of our whole Earth to a single grain of sand on a beach. It is sometimes also known as the Lorentz radius or the Thomson scattering length. It is denoted by Re.
Therefore, Re = 2.8 x 10-15 meters.
The classical radius of an electron and the radius of an electron refer to the same physical quantity. The term "classical radius of an electron" is used to describe the theoretical estimation of the size of an electron based on classical electromagnetic theory. However, it's important to note that the classical model of the electron as a point-like particle is an approximation, and in reality, electrons do not have a well-defined classical radius.
Also Read : State Postulates of Special Theory of Relativity.
Also Read : Define Areal Velocity.
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