Question

example of thermionic emission​

Answer 1

Explanation:

Radiation heat transfer is the mode of transfer of heat from one place to another in the form of waves called electromagnetic waves.Convection and conduction require the presence of matter as a medium to carry

the heat from the hotter to the colder region. But a third type of heat transfer occurs without any medium at all. All life on Earth depends on the transfer of energy from the Sun, and this energy is transferred to the Earth over empty space. This form of energy transfer is radiation of heat.

Our sun is the major source of heat ene

rgy.But how does this heat energy reach the earth?It reaches us neither by conduction nor by convection because the space between the sun and the Earth’s atmosphere is empty.There is a third mode called radiation by which heat travels from one place to another.It is through radiation that heat reaches us from the sun

Answer 2

Answer:

The emission of electrons by supplying thermal energy is known as Thermionic emission.