What is the significance of Einstein relation?

The Einstein relation relates the diffusion coefficient to the mobility and is frequently used in semiconductor device analysis and design. A flux equation governing the behavior of mobile particles in semiconductor material is derived from the Boltzmann transport equation.

What is nernst Einstein equation?

The Nernst-Einstein equation is Λm 0=(F 2/RT)(v+ z+ 2 D++v– z– 2 D–), where F is the Faraday constant, R is the gas constant, T is the thermodynamic temperature, v+ and v– are the number of cations and anions per formula unit of electrolyte, z+ and z– are the valences of the ions, and D+ and D– are the diffusion …

What is the Stokes Einstein equation for diffusion?

Einstein has shown that the relation between molecular movement and diffusion in a liquid may be expressed by the following equation, when the particles move independently of each other:— D=͞Δ2/2t, (1) D being the diffusion constant and ͞Δ2 the mean square of the deviation in a given direction in time t.

What is the physical significance of Einstein mass-energy relation?

This equation gives the amount of energy equivalent to a certain mass and is a result derived from Einstein’s theory of relativity. In any reaction if the final products have lower mass than the initial state, then the difference in mass is released as energy, with an amount given by the above equivalence relation.

What is Einstein’s mass-energy relation explain it’s physical significance?

E = mc2, equation in German-born physicist Albert Einstein’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.

What is the difference between mobility and diffusivity?

The key difference between mobility and diffusion coefficient is that mobility is the ability of a charged particle to move due to the effect of an electrical field whereas diffusion coefficient is a constant which describe the relationship between molar flux and the concentration gradient.

What is mass-energy equivalence derive the relation between them and give its significance?

Massless particles such as photons have zero invariant mass, but massless free particles have both momentum and energy. The equivalence principle implies that when energy is lost in chemical reactions, nuclear reactions, and other energy transformations, the system will also lose a corresponding amount of mass.

What is meant by mass-energy equivalence discuss its significance in physics?

Mass-energy equivalence entails that the total mass of a system may change, although the total energy and momentum remain constant; for example, the collision of an electron and a proton annihilates the mass of both particles, but creates energy in the form of photons.

What is the significance of the mass-energy equivalence?

The discovery of mass-energy equivalence proved crucial to the development of theories of atomic fusion and fission reactions. Mass-energy equivalence states that every object possesses certain energy even in a stationary position. A stationary body does not have kinetic energy.

What is the significance of mass-energy?

What is the difference between ionic conductivity and electronic conductivity?

The key difference between electronic and ionic conduction is that electronic conduction is the movement of electrons from one place to another, whereas ionic conduction is the movement of ions from one place to another. The term conduction refers to the transfer of energy through a substance.

Why do ions increase conductivity?

Electrical currents are transported by ions in a given solution. As the concentration of ions increases, the conductivity increases. This is because conductivity increases as water dissolves more ionic compounds due to the ions transporting an electrical current in the solution.