Advertisement

Advertisement

free electron

noun

, Physics.
  1. an electron that is not attached to an atom or molecule and is free to respond to outside forces.


free electron

noun

  1. any electron that is not attached to an ion, atom, or molecule and is free to move under the influence of an applied electric or magnetic field


Discover More

Word History and Origins

Origin of free electron1

First recorded in 1905–10

Discover More

Example Sentences

Semiconductors lie between metals, with many free electrons that carry electrical current, and insulators, whose electrons are held within its atoms and cannot form a current.

The secret was that near absolute zero, vibrations in a metal’s atomic lattice steer free electrons into pairs.

Advertisement

Word of the Day

axolotl

[ak-suh-lot-l ]

Meaning and examples

Start each day with the Word of the Day in your inbox!

By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy Policies.

Advertisement

Advertisement

Advertisement


freedwomanfree energy