Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Dioptre> ?p ?o }
- Dioptre abstract "A dioptre (uk), or diopter (us), is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). It is thus a unit of reciprocal length. For example, a 3-dioptre lens brings parallel rays of light to focus at 1⁄3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The usage was proposed by French ophthalmologist Ferdinand Monoyer in 1872, based on earlier use of the term dioptrice by Johannes Kepler.The main benefit of using optical power rather than focal length is that the lensmaker's equation has the object distance, image distance, and focal length all as reciprocals. A further benefit is that when relatively thin lenses are placed close together their powers approximately add. Thus, a thin 2-dioptre lens placed close to a thin 0.5-dioptre lens yields almost the same focal length as a 2.5-dioptre lens would have.Though the dioptre is based on the SI-metric system it has not been included in the standard so that there is no international name or abbreviation for this unit of measurement—within the international system of units, this unit for optical power would need to be specified explicitly as the inverse metre (m−1). However most languages have borrowed the original name and some national standardization bodies like DIN specify a unit name (dioptrie, dioptria, etc.) and derived unit symbol \"dpt\".".
- Dioptre wikiPageID "95646".
- Dioptre wikiPageLength "7113".
- Dioptre wikiPageOutDegree "65".
- Dioptre wikiPageRevisionID "673000381".
- Dioptre wikiPageWikiLink Accommodation_(eye).
- Dioptre wikiPageWikiLink Addison-Wesley.
- Dioptre wikiPageWikiLink Amplitude_of_accommodation.
- Dioptre wikiPageWikiLink Astigmatism.
- Dioptre wikiPageWikiLink Category:Non-SI_metric_units.
- Dioptre wikiPageWikiLink Category:Optics.
- Dioptre wikiPageWikiLink Category:Units_of_measurement.
- Dioptre wikiPageWikiLink Ciliary_muscle.
- Dioptre wikiPageWikiLink Circle.
- Dioptre wikiPageWikiLink Cornea.
- Dioptre wikiPageWikiLink Corrective_lens.
- Dioptre wikiPageWikiLink Curvature.
- Dioptre wikiPageWikiLink Deutsches_Institut_für_Normung.
- Dioptre wikiPageWikiLink Dioptrics.
- Dioptre wikiPageWikiLink Eye_care_professional.
- Dioptre wikiPageWikiLink Eyeglass_prescription.
- Dioptre wikiPageWikiLink Ferdinand_Monoyer.
- Dioptre wikiPageWikiLink Focal_length.
- Dioptre wikiPageWikiLink Glasses.
- Dioptre wikiPageWikiLink Hyperopia.
- Dioptre wikiPageWikiLink International_System_of_Units.
- Dioptre wikiPageWikiLink Johannes_Kepler.
- Dioptre wikiPageWikiLink Lens_(anatomy).
- Dioptre wikiPageWikiLink Lens_(optics).
- Dioptre wikiPageWikiLink Lens_clock.
- Dioptre wikiPageWikiLink Lensmeter.
- Dioptre wikiPageWikiLink Magnification.
- Dioptre wikiPageWikiLink Magnifying_glass.
- Dioptre wikiPageWikiLink Metre.
- Dioptre wikiPageWikiLink Metric_system.
- Dioptre wikiPageWikiLink Mirror.
- Dioptre wikiPageWikiLink Multiplicative_inverse.
- Dioptre wikiPageWikiLink Myopia.
- Dioptre wikiPageWikiLink Ophthalmology.
- Dioptre wikiPageWikiLink Optical_power.
- Dioptre wikiPageWikiLink Optics.
- Dioptre wikiPageWikiLink Optometry.
- Dioptre wikiPageWikiLink Over-the-counter_drug.
- Dioptre wikiPageWikiLink Presbyopia.
- Dioptre wikiPageWikiLink Prism_correction.
- Dioptre wikiPageWikiLink Radius.
- Dioptre wikiPageWikiLink Radius_of_curvature_(optics).
- Dioptre wikiPageWikiLink Ray_(optics).
- Dioptre wikiPageWikiLink Reciprocal_length.
- Dioptre wikiPageWikiLink Refractive_error.
- Dioptre wikiPageWikiLink Refractive_index.
- Dioptre wikiPageWikiLink SPIE.
- Dioptre wikiPageWikiLink Stress_(mechanics).
- Dioptre wikiPageWikiLink Tension_(physics).
- Dioptre wikiPageWikiLink Thin_lens.
- Dioptre wikiPageWikiLink Units_of_measurement.
- Dioptre wikiPageWikiLink Vergence_(optics).
- Dioptre wikiPageWikiLink Wiktionary:additive.
- Dioptre wikiPageWikiLink Zonule_of_Zinn.
- Dioptre wikiPageWikiLinkText "D".
- Dioptre wikiPageWikiLinkText "Dioptre".
- Dioptre wikiPageWikiLinkText "Prism Dioptres".
- Dioptre wikiPageWikiLinkText "diopter".
- Dioptre wikiPageWikiLinkText "diopters".
- Dioptre wikiPageWikiLinkText "dioptre".
- Dioptre wikiPageWikiLinkText "dioptric value".
- Dioptre wikiPageWikiLinkText "power".
- Dioptre wikiPageUsesTemplate Template:About.
- Dioptre wikiPageUsesTemplate Template:Cite_book.
- Dioptre wikiPageUsesTemplate Template:Details3.
- Dioptre wikiPageUsesTemplate Template:Frac.
- Dioptre wikiPageUsesTemplate Template:Refbegin.
- Dioptre wikiPageUsesTemplate Template:Refend.
- Dioptre wikiPageUsesTemplate Template:Reflist.
- Dioptre wikiPageUsesTemplate Template:Smallcaps.
- Dioptre wikiPageUsesTemplate Template:Unreferenced_section.
- Dioptre subject Category:Non-SI_metric_units.
- Dioptre subject Category:Optics.
- Dioptre subject Category:Units_of_measurement.
- Dioptre hypernym Unit.
- Dioptre type Organisation.
- Dioptre type Science.
- Dioptre type Unit.
- Dioptre comment "A dioptre (uk), or diopter (us), is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). It is thus a unit of reciprocal length. For example, a 3-dioptre lens brings parallel rays of light to focus at 1⁄3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams.".
- Dioptre label "Dioptre".
- Dioptre sameAs Q193933.
- Dioptre sameAs ديبوتر_(وحدة_قياس).
- Dioptre sameAs Диоптър.
- Dioptre sameAs Diòptria.
- Dioptre sameAs Dioptrie.
- Dioptre sameAs Dioptri.
- Dioptre sameAs Dioptrie.
- Dioptre sameAs Dioptrio.
- Dioptre sameAs Dioptría.
- Dioptre sameAs Dioptria.
- Dioptre sameAs دیوپتر.
- Dioptre sameAs Dioptria.
- Dioptre sameAs Dioptrie.
- Dioptre sameAs Diaptar.
- Dioptre sameAs Dioptría.