spherical aberration: meaning, definition, pronunciation and examples
Low frequencyTechnical, Academic
Quick answer
What does “spherical aberration” mean?
A type of optical defect in lenses or mirrors where light rays from different parts of the surface focus at different points, causing blurred or distorted images.
Audio
Pronunciation
Definition
Meaning and Definition
A type of optical defect in lenses or mirrors where light rays from different parts of the surface focus at different points, causing blurred or distorted images.
Any systematic distortion or imperfection in a system where components fail to converge properly toward an ideal outcome, often used metaphorically in fields like statistics, engineering, and social sciences.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning; spelling follows local conventions (e.g., 'centre' vs. 'center' in related texts).
Connotations
Identical scientific connotation; equally specialised term.
Frequency
Equally rare in both varieties outside technical contexts; more common in physics/astronomy publications.
Grammar
How to Use “spherical aberration” in a Sentence
[lens/system] + [has/exhibits/suffers from] + spherical aberration[spherical aberration] + [is corrected/reduced/minimised/minimized] + [by/with] + [method][to] + [compensate for/eliminate] + spherical aberrationVocabulary
Collocations
Examples
Examples of “spherical aberration” in a Sentence
verb
British English
- The design aims to spherically aberrate the light as little as possible.
- Early lenses tended to aberrate spherically.
American English
- The mirror was figured to avoid spherically aberrating the image.
- This setup aberrates spherically at wide apertures.
adverb
British English
- The system performed spherically aberrantly.
- The light focused spherically aberratedly.
American English
- The image degraded spherically aberrantly.
- It behaved spherically aberratedly at the edges.
adjective
British English
- The spherical-aberration correction was crucial.
- We observed spherical-aberration effects.
American English
- The spherical-aberration problem was solved.
- Spherical-aberration data were collected.
Usage
Meaning in Context
Business
Not used.
Academic
Common in physics, astronomy, and optical engineering papers discussing lens design or telescope performance.
Everyday
Virtually never used; would require explanation.
Technical
Standard term in optics, microscopy, photography, and astronomy for describing lens/mirror imperfections.
Vocabulary
Synonyms of “spherical aberration”
Strong
Neutral
Weak
Vocabulary
Antonyms of “spherical aberration”
Watch out
Common Mistakes When Using “spherical aberration”
- Pronouncing 'spherical' with /sf/ as in 'sphere' rather than /sfɪr/ or /sfɛr/.
- Using 'spheric aberration' (missing '-al').
- Confusing with 'astigmatism' (different optical defect).
- Incorrectly capitalising as a proper noun.
FAQ
Frequently Asked Questions
Not exactly. Spherical aberration is a specific optical cause of blurriness in manufactured lenses and mirrors, not a general term for poor vision in eyes (though the human eye can exhibit it).
In a simple spherical lens, no, but it can be drastically reduced or effectively eliminated using combinations of lenses, aspherical lens elements, or corrective mirrors, as seen in high-quality cameras and telescopes.
Spherical aberration occurs because of the shape of the lens/mirror, causing monochromatic light (single colour) to focus at different points. Chromatic aberration is due to the lens material dispersing different colours of light, causing a colour fringe.
In most imaging contexts, yes, it degrades sharpness. However, sometimes a controlled amount is intentionally used for artistic effect in photography to create a specific 'look' or 'bokeh'.
A type of optical defect in lenses or mirrors where light rays from different parts of the surface focus at different points, causing blurred or distorted images.
Spherical aberration is usually technical, academic in register.
Spherical aberration: in British English it is pronounced /ˈsfɛrɪkəl ˌæbəˈreɪʃ(ə)n/, and in American English it is pronounced /ˈsfɪrɪkəl ˌæbəˈreɪʃən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None (highly technical term)”
Learning
Memory Aids
Mnemonic
Imagine a SPHERE (spherical) that's ABERRANT (aberration) – it's not perfectly round, so light bounces off it to the wrong places, blurring the image.
Conceptual Metaphor
IMPERFECTION IS DISTORTED VISION; SYSTEMATIC ERROR IS OPTICAL DEFECT (used to describe non-optical flaws).
Practice
Quiz
What is the primary cause of spherical aberration?