which is the us english term for thermal energy
Thermal energy Thermal energy is a term used loosely as a synonym for more rigorously-defined thermodynamic quantities such as the internal energy of a system; heat or sensible heat, which are defined as types of transfer of energy (as is work); or for the characteristic energy of a degree of freedom in a thermal system   k T  {\displaystyle kT} , where   T  {\displaystyle T}  is temperature and   k  {\displaystyle k}  is the Boltzmann constant.
Temperature The thermodynamic definition of temperature is due to Kelvin.
Color Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity. When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light".
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.