dirac: meaning, definition, pronunciation and examples
Technical/Extremely LowTechnical/Scientific
Quick answer
What does “dirac” mean?
A unit of magnetic flux density equal to one Maxwell per square centimetre, used primarily in theoretical physics to measure the flux of Dirac monopoles.
Audio
Pronunciation
Definition
Meaning and Definition
A unit of magnetic flux density equal to one Maxwell per square centimetre, used primarily in theoretical physics to measure the flux of Dirac monopoles.
A term in physics most commonly referring to Dirac monopoles (hypothetical magnetic monopoles) or the Dirac delta function, named after the physicist Paul Dirac. It is also used in the name of the unit of magnetic flux density for such monopoles.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage between British and American English. The term is used identically in international scientific literature.
Connotations
Highly specialised, academic, and theoretical. Connotes advanced quantum mechanics and particle physics.
Frequency
Extremely rare outside of highly specialised physics contexts. No discernible frequency difference between regional varieties.
Grammar
How to Use “dirac” in a Sentence
measured in diracsa flux of X diracsthe Dirac delta functionVocabulary
Collocations
Examples
Examples of “dirac” in a Sentence
adjective
British English
- The Dirac formalism is fundamental to quantum mechanics.
American English
- The Dirac delta function is a key concept in signal processing.
Usage
Meaning in Context
Business
Not used.
Academic
Used exclusively in theoretical physics and advanced mathematics papers and discussions.
Everyday
Virtually never used.
Technical
Primary domain of use. Refers to concepts and units in quantum field theory and related disciplines.
Vocabulary
Synonyms of “dirac”
Neutral
Watch out
Common Mistakes When Using “dirac”
- Using it as a general term (incorrect).
- Pronouncing it /daɪˈræk/ (common mispronunciation; correct is /ˈdɪræk/).
- Confusing 'dirac' (unit) with 'Dirac' (proper name) in writing; the unit is typically not capitalised except at the start of a sentence.
FAQ
Frequently Asked Questions
No, it is an extremely rare, highly technical term used almost exclusively in advanced physics.
Absolutely not. It is only relevant for specialists in theoretical physics or the history of science.
When referring directly to the physicist Paul Dirac, it is capitalised. When used as the unit name, it is often written in lower case (e.g., 'one dirac'), though it may be capitalised in some technical literature due to its eponymous origin.
No, it functions almost exclusively as a noun (the unit) or as part of a proper noun in phrases like 'Dirac equation'. It is not used as a verb.
A unit of magnetic flux density equal to one Maxwell per square centimetre, used primarily in theoretical physics to measure the flux of Dirac monopoles.
Dirac is usually technical/scientific in register.
Dirac: in British English it is pronounced /ˈdɪræk/, and in American English it is pronounced /ˈdɪræk/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of physicist Paul DIRAC discovering a new unit for a hypothetical magnetic particle (monopole): a DIRAC.
Conceptual Metaphor
ABSTRACT QUANTITY AS A UNIT: Treating a highly specific theoretical measurement as a standardised, countable entity.
Practice
Quiz
What is a 'dirac' primarily associated with?