What context can I use each word in?
Learn when and how to use these words with these examples!
quantal
Example
The quantal nature of atomic energy levels was first proposed by Niels Bohr. [quantal: adjective]
Example
The release of neurotransmitters at synapses is a quantal process. [quantal: adjective]
quantum
Example
Quantum mechanics describes the behavior of subatomic particles. [quantum: noun]
Example
The quantum theory of light explains the photoelectric effect. [quantum: adjective]
Good things to know
Which word is more common?
Quantum is a more commonly used term than quantal in everyday language. Quantum has become a popular term in popular culture and is often used in science fiction and entertainment media.
What’s the difference in the tone of formality between quantal and quantum?
Quantal and quantum are both technical terms and may be associated with a more formal language. However, quantal may be considered more specialized and less commonly used than quantum.
