Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

quantum-equivalence law

noun

Definition of quantum-equivalence law 

: a principle of photoelectric action: when a quantum of radiation is involved in a photoelectric process its whole energy reappears in other forms since photoelectric processes do not absorb fractional quanta as do some other processes (as Compton effect)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about quantum-equivalence law

Share quantum-equivalence law

Statistics for quantum-equivalence law

Look-up Popularity

Comments on quantum-equivalence law

What made you want to look up quantum-equivalence law? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

susurrous

full of whispering sounds

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

Ask the Editors

Word Games