birefringence: meaning, definition, pronunciation and examples
LowSpecialized/Scientific
Quick answer
What does “birefringence” mean?
The optical property of a material having a refractive index that depends on the polarization and propagation direction of light.
Audio
Pronunciation
Definition
Meaning and Definition
The optical property of a material having a refractive index that depends on the polarization and propagation direction of light.
The splitting of a light wave into two separate waves (the ordinary and extraordinary rays) when it passes through an anisotropic material, like certain crystals or plastics under stress.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling is consistent.
Connotations
None; purely technical term.
Frequency
Equally rare and specialized in both dialects, confined to optics, mineralogy, and materials science.
Grammar
How to Use “birefringence” in a Sentence
The [material] exhibits/showed birefringence.The birefringence of [material] was measured.Birefringence is observed in [conditions].Vocabulary
Collocations
Examples
Examples of “birefringence” in a Sentence
verb
British English
- The strained plastic will birefringe under polarised light.
- The sample did not birefringe as expected.
American English
- The material birefringed when placed under stress.
- Not all crystals birefringe.
adjective
British English
- The birefringent sample was clearly visible under the microscope.
- They studied birefringent fibres.
American English
- A birefringent crystal will split the laser beam.
- The birefringent properties were quantified.
Usage
Meaning in Context
Business
Virtually never used, except possibly in highly technical B2B contexts for optical materials.
Academic
Common in physics, engineering, geology, and biology research papers and textbooks.
Everyday
Extremely rare; would only be used by someone explaining a specific scientific observation.
Technical
The primary domain. Used in optics labs, materials testing, mineral identification, and fibre optics engineering.
Vocabulary
Synonyms of “birefringence”
Neutral
Weak
Vocabulary
Antonyms of “birefringence”
Watch out
Common Mistakes When Using “birefringence”
- Misspelling as 'birefringance'.
- Confusing it with fluorescence or phosphorescence.
- Using it as a verb (e.g., 'The crystal birefringes').
FAQ
Frequently Asked Questions
Yes, these are synonymous terms. 'Double refraction' is a more descriptive, less formal term, while 'birefringence' is the standard term in technical literature.
Sometimes. Looking through a clear calcite crystal at a dot on paper will reveal two dots, a classic demonstration of birefringence. For most materials, a polarising filter is needed to observe the effect clearly.
Transparent plastic objects, like CD cases or plastic rulers, often show colourful birefringence patterns when placed between two polarising filters (e.g., one polarising sunglass lens and a laptop screen).
It is a crucial diagnostic tool in mineralogy for identifying minerals. In materials science, it reveals internal stresses in plastics and glasses. In biology and medicine, it's used to study structures like muscle fibres, collagen, and DNA.
The optical property of a material having a refractive index that depends on the polarization and propagation direction of light.
Birefringence is usually specialized/scientific in register.
Birefringence: in British English it is pronounced /ˌbaɪ.rɪˈfrɪn.dʒəns/, and in American English it is pronounced /ˌbaɪ.rɪˈfrɪn.dʒəns/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'BI' (two) + 'REFRINGENCE' (like refraction). A material with birefringence bends light in TWO different ways, creating a double image.
Conceptual Metaphor
N/A (Highly technical, literal term)
Practice
Quiz
Birefringence is most directly related to which of the following?