Thermal Emission (Noun)
Meaning
The emission of electrons from very hot substances.
Classification
Nouns denoting natural processes.
Examples
- The thermal emission of electrons from the tungsten filament was used to create the cathode ray in the early televisions.
- The study of thermal emission from very hot substances led to the development of the electron tube, a crucial component in many electronic devices.
- The high-temperature furnace was designed to maximize thermal emission of electrons from the sample, allowing researchers to study the properties of the material.
- The phenomenon of thermal emission was first observed by Frederick Guthrie in 1873, when he noticed that a red-hot iron sphere was emitting negative charges.
- The thermal emission of electrons from the heated metal was measured using a sensitive ammeter, which detected the flow of electrons into the surrounding air.