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Optical flat

An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a metre). They are used with a monochromatic light to determine the flatness (surface accuracy) of other surfaces (whether optical, metallic, ceramic, or otherwise), by means of wave…

Flatness testing, How interference fringes form & Precision and errors

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Overview

Flatness testing

How interference fringes form

Precision and errors

Absolute flatness

Determining surface shape

Long-term stability

Advanced semantic analysis

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Map overview Semantic statistics

Optical flat

Nodes68
Edges67
Triples68
Avg. degree1.97
Density0.029412
Components1

How this topic connects Entity context

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Optical flat

Top relations

related to Precision and errors · 15
Optical flat → Any, Because, Counterintuitively, Many, Merely, No, Often, Optical, The, Therefore, This, Thus, To, Unfortunately, When
related to How interference fringes form · 10
Optical flat → As, At, Constructive, Destructive, However, In, Monochromatic, The, Therefore, Unless
related to Preparation · 10
Optical flat → After, Before, Both, Even, Most, Sometimes, Testing, The, This, Typically
related to Wringing · 9
Optical flat → After, As, Because, If, In, Sliding, Testing, The, Wringing
related to Absolute flatness · 8
Optical flat → Absolute, By, However, In, The, Therefore, This, To
related to Long-term stability · 7
Optical flat → Because, During, However, Pa, The, Therefore, This
related to Flatness testing · 5
Optical flat → An, However, If, The, These
causes · 1
Optical flat → no phase reversal
is a · 1
Optical flat → optical-grade piece of glass lapped and polished to be extremely flat on one or both sides

Important terminology Word statistics

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Important terminology

surface flat fringes light surfaces optical used interference flatness two wavelength test gap usually one angle may flats glass indicate

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Optical flatcausesno phase reversal0.90text
Optical flatis aoptical-grade piece of glass lapped and polished to be extremely flat on one or both sides0.90text
fused silica or borosilicate are usedinstance ofso glasses0.80text
which have very low coefficients of thermal expansioninstance ofso glasses0.80text
Optical flatrelated to Absolute flatnessAbsolute0.60section
Optical flatrelated to Absolute flatnessThe0.60section
Optical flatrelated to Absolute flatnessTherefore0.60section
Optical flatrelated to Absolute flatnessHowever0.60section
Optical flatrelated to Absolute flatnessIn0.60section
Optical flatrelated to Absolute flatnessBy0.60section
Optical flatrelated to Absolute flatnessThis0.60section
Optical flatrelated to Absolute flatnessTo0.60section

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