Is it farther or further?

optical pumping

noun, Physics, Optics.
a method for increasing the number of atoms or molecules occupying higher energy levels by irradiating them with light of the proper frequencies to raise them to those levels.
1950-55 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for optical pumping
  • But these materials can only be activated with pulses of light-called optical pumping-which limits applications.
  • Fluorescence from the optical pumping region as a function of magnetic field.
  • Dye lasers commonly employ optical pumping although some types have used chemical reaction pumping.
  • He specializes in development of helium magnetometers and the application of solid state lasers for optical pumping sources.
Encyclopedia Article for optical pumping

in physics, the use of light energy to raise the atoms of a system from one energy level to another. A system may consist of atoms having a random orientation of their individual magnetic fields. When optically pumped, the atoms will undergo a realignment of individual magnetic fields with respect to the direction of the light beam; that is, there will be a rearrangement of magnetic energy levels; and, in some cases, the bulk of the atoms will be oriented to generate a magnetic field throughout the system

Learn more about optical pumping with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for optical pumping

Few English speakers likely know this word

Word Value for optical

Scrabble Words With Friends