Thermionic emission. The emission of electrons into vacuum by a heated electronic conductor. In its broadest meaning, thermionic emission includes the emission of ions, but this process is quite different from that normally understood by the term.
Lodging or a holiday accommodation is a type of residential accommodation. People who travel and stay away from house for more than a day need lodging for sleep, rest, food, safety, shelter from cold temperatures or rain, storage of luggage and access to common household functions.[1]
A hotel is a place that offers you lodgings and meals. Persons who travel from one place to another place with a purpose will book into hotels. The purpose of their travel may be to attend a conference, a function, a wedding, or an official meeting or even it can be a vacation.