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- Barograph abstract "A barograph is a recording aneroid barometer. A barograph is used to measure pressure. The pointer in an aneroid barometer is replaced with a pen. It produces paper or foil chart called a barogram that records the barometric pressure over time.Barographs use one or more aneroid cells acting through a gear or lever train to drive a recording arm that has at its extreme end either a scribe or a pen. A scribe records on smoked foil while a pen records on paper using ink, held in a knib. The recording material is mounted on a cylindrical drum which is rotated slowly by clockwork. Commonly, the drum makes one revolution per day, per week, or per month and the rotation rate can often be selected by the user.Alexander Cumming, a watchmaker and mechanic, has a claim to having made the first effective recording barograph in the 1760s. Cumming created a series of barometical clocks, including one for King George III. However, this type of design fell out of favour. Since the amount of movement that can be generated by a single aneroid is minuscule, up to seven aneroids (so called Vidie-cans) are often stacked "in series" to amplify their motion. This type of barograph was invented in 1844 by the Frenchman Lucien Vidi (1805–1866).As atmospheric pressure responds in a predictable manner to changes in altitude, barographs may be used to record elevation changes during an aircraft flight. Barographs were required by the FAI to record certain tasks and record attempts associated with sailplanes. A continuously varying trace indicated that the sailplane had not landed during a task, while measurements from a calibrated trace could be used to establish the completion of altitude tasks or the setting of records. Examples of FAI approved sailplane barographs included the Replogle mechanical drum barograph and the EW electronic barograph (which may be used in conjunction with GPS). Mechanical barographs are not commonly used for flight documentation now, having been displaced by GNSS Flight Recorders.Today, mechanical recording barographs for meteorlogical use have commonly been superseded (though not all) by electronic weather instruments that use computer methods to record the barometric pressure. These are not only less expensive than mechanical barographs but they may also offer both greater recording length and the ability to perform further data analysis on the captured data including automated use of the data to forecast the weather. Older mechanical barographs are highly prized by collectors as they make good display items, often being made of high quality woods and brass.The most common weather Barograph found in homes and public buildings these days are the 8-day type. Some important manufacturers of Barographs are Negretti and Zambra, Short and Mason, and Richard Ferris among others. The late Victorian to early 20th century is generally considered to be the heyday of Barograph manufacture, many important refinments were made at this time, including improved temperature compensation and modification of the pen arm, to allow less weight to be applied to the paper, allowing better registration of small pressure changes (i.e. less friction on the nib). Marine barographs (used on ships) often include damping, this evens out the motion of the ship so that a more stable reading can be obtained, this can be either oil damping of the mechanism or simple coiled spring feet on the base. But, newer solid state, digital barographs from manufactures such as ASI eliminate this issue altogether, since they use no moving parts.".
- Barograph thumbnail Barograph.JPG?width=300.
- Barograph wikiPageExternalLink www.digitalbarograph.com.
- Barograph wikiPageExternalLink www.msc.ec.gc.ca.
- Barograph wikiPageID "570723".
- Barograph wikiPageLength "6668".
- Barograph wikiPageOutDegree "23".
- Barograph wikiPageRevisionID "664062030".
- Barograph wikiPageWikiLink Alexander_Cumming.
- Barograph wikiPageWikiLink Aneroid_barometer.
- Barograph wikiPageWikiLink Atmospheric_pressure.
- Barograph wikiPageWikiLink Barometer.
- Barograph wikiPageWikiLink Barometric_pressure.
- Barograph wikiPageWikiLink Category:Meteorological_instrumentation_and_equipment.
- Barograph wikiPageWikiLink Clockwork.
- Barograph wikiPageWikiLink Cylinder_(geometry).
- Barograph wikiPageWikiLink Damping.
- Barograph wikiPageWikiLink Data_analysis.
- Barograph wikiPageWikiLink FAI_Gliding_Commission.
- Barograph wikiPageWikiLink Friction.
- Barograph wikiPageWikiLink Fédération_Aéronautique_Internationale.
- Barograph wikiPageWikiLink Glider_(sailplane).
- Barograph wikiPageWikiLink Global_Positioning_System.
- Barograph wikiPageWikiLink International_Gliding_Commission.
- Barograph wikiPageWikiLink Knurling.
- Barograph wikiPageWikiLink Lucien_Vidi.
- Barograph wikiPageWikiLink Manometer.
- Barograph wikiPageWikiLink Negretti_and_Zambra.
- Barograph wikiPageWikiLink Pressure_measurement.
- Barograph wikiPageWikiLink Sailplanes.
- Barograph wikiPageWikiLink Weather_forecast.
- Barograph wikiPageWikiLink Weather_forecasting.
- Barograph wikiPageWikiLink File:Barograph.JPG.
- Barograph wikiPageWikiLink File:Barograph_01.jpg.
- Barograph wikiPageWikiLink File:Barograph_02.jpg.
- Barograph wikiPageWikiLink File:Barograph_03.jpg.
- Barograph wikiPageWikiLink File:Barograph_dbx1_iso.jpg.
- Barograph wikiPageWikiLinkText "Barograph".
- Barograph wikiPageWikiLinkText "barograph trace".
- Barograph wikiPageWikiLinkText "barograph".
- Barograph wikiPageWikiLinkText "barometrical clock".
- Barograph wikiPageWikiLinkText "blast gauge/barograph".
- Barograph wikiPageWikiLinkText "pressure".
- Barograph hasPhotoCollection Barograph.
- Barograph wikiPageUsesTemplate Template:Commons.
- Barograph wikiPageUsesTemplate Template:Meteorological_equipment.
- Barograph wikiPageUsesTemplate Template:Refimprove.
- Barograph wikiPageUsesTemplate Template:Reflist.
- Barograph subject Category:Meteorological_instrumentation_and_equipment.
- Barograph hypernym Barometer.
- Barograph type Article.
- Barograph type Instrument.
- Barograph type Article.
- Barograph type Instrument.
- Barograph comment "A barograph is a recording aneroid barometer. A barograph is used to measure pressure. The pointer in an aneroid barometer is replaced with a pen. It produces paper or foil chart called a barogram that records the barometric pressure over time.Barographs use one or more aneroid cells acting through a gear or lever train to drive a recording arm that has at its extreme end either a scribe or a pen. A scribe records on smoked foil while a pen records on paper using ink, held in a knib.".
- Barograph label "Barograph".
- Barograph sameAs Barograph.
- Barograph sameAs Barograf.
- Barograph sameAs Barograph.
- Barograph sameAs Βαρογράφος.
- Barograph sameAs Barografo.
- Barograph sameAs فشارنگار.
- Barograph sameAs Barograph.
- Barograph sameAs Barografo.
- Barograph sameAs Барограф.
- Barograph sameAs Барограф.
- Barograph sameAs Barograf.
- Barograph sameAs Barograf.
- Barograph sameAs Barógrafo.
- Barograph sameAs m.02r4wj.
- Barograph sameAs Барограф.
- Barograph sameAs Barograf.
- Barograph sameAs Барограф.
- Barograph sameAs Barograf.
- Barograph sameAs Барограф.
- Barograph sameAs Barograf.
- Barograph sameAs Q1146365.
- Barograph sameAs Q1146365.
- Barograph wasDerivedFrom Barograph?oldid=664062030.
- Barograph depiction Barograph.JPG.
- Barograph isPrimaryTopicOf Barograph.