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- Bifilar_sundial abstract "This type of sundial was discovered by the German mathematician Hugo Michnik in 1922. The bifilar sundial has two non-touching threads parallel to the dial. Usually the second thread is orthogonal-(perpendicular) to the first.The intersection of the two threads' shadows gives the local apparent time.When the threads have the correctly calculated separation, the hour-lines on the horizontal surface are uniformly drawn. The angle between successive hour-lines is constant. The hour-lines for successive hours are 15 degrees apart.".
- Bifilar_sundial thumbnail Bifilaire.png?width=300.
- Bifilar_sundial wikiPageExternalLink section1-4.doc.
- Bifilar_sundial wikiPageExternalLink 0000045.000.html.
- Bifilar_sundial wikiPageID "45328964".
- Bifilar_sundial wikiPageLength "10433".
- Bifilar_sundial wikiPageOutDegree "25".
- Bifilar_sundial wikiPageRevisionID "650182802".
- Bifilar_sundial wikiPageWikiLink Algebraic_curve.
- Bifilar_sundial wikiPageWikiLink Beuthen.
- Bifilar_sundial wikiPageWikiLink Bytom.
- Bifilar_sundial wikiPageWikiLink Cartesian_coordinate_system.
- Bifilar_sundial wikiPageWikiLink Category:Sundials.
- Bifilar_sundial wikiPageWikiLink Conic_section.
- Bifilar_sundial wikiPageWikiLink Declination.
- Bifilar_sundial wikiPageWikiLink Equatorial_coordinate_system.
- Bifilar_sundial wikiPageWikiLink Hour.
- Bifilar_sundial wikiPageWikiLink Hour_angle.
- Bifilar_sundial wikiPageWikiLink Latitude.
- Bifilar_sundial wikiPageWikiLink Line_segment.
- Bifilar_sundial wikiPageWikiLink Local_apparent_time.
- Bifilar_sundial wikiPageWikiLink Meridian_(astronomy).
- Bifilar_sundial wikiPageWikiLink Orthogonal.
- Bifilar_sundial wikiPageWikiLink Orthogonality.
- Bifilar_sundial wikiPageWikiLink Ray.
- Bifilar_sundial wikiPageWikiLink Solar_time.
- Bifilar_sundial wikiPageWikiLink Steiner_conic.
- Bifilar_sundial wikiPageWikiLink Steiners_theorem_(geometry).
- Bifilar_sundial wikiPageWikiLink Sundial.
- Bifilar_sundial wikiPageWikiLink Upper_Silesia.
- Bifilar_sundial wikiPageWikiLink File:Bifilaire.png.
- Bifilar_sundial wikiPageWikiLinkText "bifilar sundial".
- Bifilar_sundial hasPhotoCollection Bifilar_sundial.
- Bifilar_sundial wikiPageUsesTemplate Template:Cite_journal.
- Bifilar_sundial wikiPageUsesTemplate Template:Commons_category.
- Bifilar_sundial wikiPageUsesTemplate Template:Efn.
- Bifilar_sundial wikiPageUsesTemplate Template:Notelist.
- Bifilar_sundial wikiPageUsesTemplate Template:Reflist.
- Bifilar_sundial wikiPageUsesTemplate Template:Sfn.
- Bifilar_sundial wikiPageUsesTemplate Template:Time_Topics.
- Bifilar_sundial wikiPageUsesTemplate Template:Time_measurement_and_standards.
- Bifilar_sundial subject Category:Sundials.
- Bifilar_sundial comment "This type of sundial was discovered by the German mathematician Hugo Michnik in 1922. The bifilar sundial has two non-touching threads parallel to the dial. Usually the second thread is orthogonal-(perpendicular) to the first.The intersection of the two threads' shadows gives the local apparent time.When the threads have the correctly calculated separation, the hour-lines on the horizontal surface are uniformly drawn. The angle between successive hour-lines is constant.".
- Bifilar_sundial label "Bifilar sundial".
- Bifilar_sundial sameAs Bifilar-Sonnenuhr.
- Bifilar_sundial sameAs Reloj_bifilar.
- Bifilar_sundial sameAs Cadran_bifilaire.
- Bifilar_sundial sameAs m.012sq1sv.
- Bifilar_sundial sameAs Q858280.
- Bifilar_sundial sameAs Q858280.
- Bifilar_sundial wasDerivedFrom Bifilar_sundial?oldid=650182802.
- Bifilar_sundial depiction Bifilaire.png.
- Bifilar_sundial isPrimaryTopicOf Bifilar_sundial.