Valve & digital electronics: thermionic emission, Physics

Assignment Help:

(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current flowing is known as thermion current.

(ii)Thermions have dissimilar velocities.

(iii)This was discovered by Edison

 


Related Discussions:- Valve & digital electronics: thermionic emission

Physical interpretation of wave function, Physical interpretation of wave f...

Physical interpretation of wave function : Einstein proposed a historic relationship between energy and mass using postulates of STR. The variation of mass with velocity has modif

What is the width of the central band - optics, Red light (λ =  685 nm) fal...

Red light (λ =  685 nm) falls on a slit that is 0.025 mm wide. The distance between the centers of the central bright band and the second-order dark band is 6.3 cm. What is

Give the applications of moseley''s law, Q. Give the applications of Mosele...

Q. Give the applications of Moseley's law. (i) The elements are organized in the periodic table according to the atomic numbers and not according to the atomic weights. (ii

Process to calculate the velocity of the mass, A 10 kilogram mass rests on ...

A 10 kilogram mass rests on a horizontal frictionless surface.  A horizontal force of 5 Newtons is applied to the mass.  After the force has been applied for 1 second, the

Inductors in dc circuits, Inductors in dc circuits: If it is required t...

Inductors in dc circuits: If it is required to increases the value of inductance in a circuit, then two or more inductors may be connected in series.  The total inductance then

Explain power supply voltage, A diode in a circuit similar to the one in Fi...

A diode in a circuit similar to the one in Figure 29-26 has a voltage drop, V d , of  0.95 V when I = 18 mA. If a 390 Ω resistor, R, is connected in series, what power supply volta

How are glass fiber ended, How are glass fiber ended? Glass fibers are,...

How are glass fiber ended? Glass fibers are, usually potted or encapsulated at the single end with the help of an epoxy compound or adhesive. It results on a very hard element

Explain process of resonance, Resonance: When the frequency of driving...

Resonance: When the frequency of driving force becomes equivalent to the natural frequency of an oscillating system, the driving force gives maximum energy and the oscillating

Principles of radiation therapy, Principles of radiation therapy: The ...

Principles of radiation therapy: The basic principle of radiation therapy is to maximize damage to the tumor while minimizing damage to the normal tissue.Factors that determin

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd