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Heliotrope aimer for Operation On-Target
Heliotrope aimer for Operation On-Target
Published: 2015/09/21
Channel: rafowell
Catalinbread Heliotrope
Catalinbread Heliotrope
Published: 2008/11/01
Channel: Catalinbread Mechanisms of Music
Joplin/Chauvin, Heliotrope Bouquet, ragtime piano solo
Joplin/Chauvin, Heliotrope Bouquet, ragtime piano solo
Published: 2010/03/31
Channel: smalin
What Is The Meaning Of Heliotrope?
What Is The Meaning Of Heliotrope?
Published: 2017/09/11
Channel: Silly Question
Ringworm, Heliotrope, Prunes&Custard, Orbit, LF7
Ringworm, Heliotrope, Prunes&Custard, Orbit, LF7
Published: 2012/01/06
Channel: Saintshish
NIkKane "Heliotrope"
NIkKane "Heliotrope"
Published: 2009/10/24
Channel: NikKanemusic
Heliotrope Bouquet by Joplin/Chauvin | Cory Hall, pianist-composer
Heliotrope Bouquet by Joplin/Chauvin | Cory Hall, pianist-composer
Published: 2009/09/28
Channel: BachScholar
Heliotrope Ragtime Orchestra  "New Orleans Stomp"
Heliotrope Ragtime Orchestra "New Orleans Stomp"
Published: 2015/12/01
Channel: SFRaeAnn
Heliotrope Bouquet (Scott Joplin)
Heliotrope Bouquet (Scott Joplin)
Published: 2006/08/19
Channel: troubleclef
Heliotrope by David Reed
Heliotrope by David Reed
Published: 2014/04/13
Channel: Arvind Mallya
Scott Joplin Piano Rags: Heliotrope Bouquet | Ragtime #9 (Piano Tutorial)
Scott Joplin Piano Rags: Heliotrope Bouquet | Ragtime #9 (Piano Tutorial)
Published: 2017/03/24
Channel: ThePiano Team
Heliotrope Bouquet - Joplin Ragtime Guitar
Heliotrope Bouquet - Joplin Ragtime Guitar
Published: 2007/07/31
Channel: Zane Charron
Catalinbread Heliotrope pedal review for rock n roll vintage guitars
Catalinbread Heliotrope pedal review for rock n roll vintage guitars
Published: 2011/01/21
Channel: rocknrollvintage
Scott Joplin & Louis Chauvin - Heliotrope Bouquet (slow version)
Scott Joplin & Louis Chauvin - Heliotrope Bouquet (slow version)
Published: 2017/04/14
Channel: MrBenlus
Heliotrope Bouquet for string Quartet
Heliotrope Bouquet for string Quartet
Published: 2017/06/26
Channel: Laurentiu Gherman
''Heliotrope Bouquet'' ... Don Lewers ... Banjo.
Published: 2016/03/10
Channel: Don Lewers Banjo
Heliotrope Ragtime Orchestra  "Shake It and Break It"
Heliotrope Ragtime Orchestra "Shake It and Break It"
Published: 2015/12/01
Channel: SFRaeAnn
Scott Joplin & Louis Chauvin - Heliotrope Bouquet
Scott Joplin & Louis Chauvin - Heliotrope Bouquet
Published: 2014/08/25
Channel: Sal Mi
Joshua Rifkin. Scott Joplin & Louis Chauvin
Joshua Rifkin. Scott Joplin & Louis Chauvin's Heliotrope Bouquet.
Published: 2012/01/24
Channel: Teddyb1939
Heliotrope Bouquet
Heliotrope Bouquet
Published: 2015/01/03
Channel: Video Game Pianist
Heliotrope Bouquet by Scott Joplin -- Piano
Heliotrope Bouquet by Scott Joplin -- Piano
Published: 2012/06/03
Channel: vexal
Heliotrope Bouquet  by  Scott Joplin  and  Louis Chauvin
Heliotrope Bouquet by Scott Joplin and Louis Chauvin
Published: 2013/07/21
Channel: Randolph Love
Tips for Twat @ Heliotrope 9 Pt. III
Tips for Twat @ Heliotrope 9 Pt. III
Published: 2012/06/11
Channel: Gleb Bacon
Catalinbread Teaser Stallion 2 and Heliotrope
Catalinbread Teaser Stallion 2 and Heliotrope
Published: 2009/07/03
Channel: Catalinbread Mechanisms of Music
Catalinbread - Csidman & Heliotrope [Pedal Siblings]
Catalinbread - Csidman & Heliotrope [Pedal Siblings]
Published: 2016/12/12
Channel: Simon The Magpie
SAY IT LOUD! - Session Two - KC Porter, Allison Iraheta + Heliotrope
SAY IT LOUD! - Session Two - KC Porter, Allison Iraheta + Heliotrope
Published: 2015/12/04
Channel: Halo Circus
Heliotrope Bouquet (Dorian Henry) Scott Joplin Vol. 3 + TAB
Heliotrope Bouquet (Dorian Henry) Scott Joplin Vol. 3 + TAB
Published: 2015/07/09
Channel: RagtimeDorianHenry
Nik Kane, "Heliotrope" Live@ the Beat
Nik Kane, "Heliotrope" Live@ the Beat
Published: 2009/08/02
Channel: Nikolas Kane
THREE SHADES OF BLUE NO. 3, Heliotrope (Ferde Grofe) played by Harry Perrella (1928)
THREE SHADES OF BLUE NO. 3, Heliotrope (Ferde Grofe) played by Harry Perrella (1928)
Published: 2013/04/21
Channel: Ednay Arkspay
Heliotrope Bouquet by Scott Joplin and Louis Chauvin (swung)
Heliotrope Bouquet by Scott Joplin and Louis Chauvin (swung)
Published: 2016/02/12
Channel: saysay
#09 Scott Joplin & Louis Chauvin: Heliotrope Bouquet
#09 Scott Joplin & Louis Chauvin: Heliotrope Bouquet
Published: 2017/01/29
Channel: hammondog
Synthesia - Scott Joplin - Heliotrope Bouquet - A Slow Drag Two Step - with Louis Chauvin
Synthesia - Scott Joplin - Heliotrope Bouquet - A Slow Drag Two Step - with Louis Chauvin
Published: 2012/04/01
Channel: blastissimo218
International Novelty Gamelan live at Heliotrope X
International Novelty Gamelan live at Heliotrope X
Published: 2014/06/06
Channel: wordsworthdirt
Heliotrope Bouquet - Solo Guitar by Neil Hogan - Scott Joplin/Louis Chauvin
Heliotrope Bouquet - Solo Guitar by Neil Hogan - Scott Joplin/Louis Chauvin
Published: 2015/02/04
Channel: TG AcousticSnapShots
Heliotrope Bouquet - Scott Joplin/Louis Chauvin - Acoustic Ragtime Guitar
Heliotrope Bouquet - Scott Joplin/Louis Chauvin - Acoustic Ragtime Guitar
Published: 2010/12/18
Channel: daddystovepipe
Heliotrope Bouquet
Heliotrope Bouquet
Published: 2007/09/19
Channel: latibes
heliotrope bouquet.mp4
heliotrope bouquet.mp4
Published: 2011/08/24
Channel: TrackLabBiz
Quartet Heliotrope Bouquet
Quartet Heliotrope Bouquet
Published: 2009/12/07
Channel: Rafael Rosenfeld
Heliotrope Bouquet Joplin
Heliotrope Bouquet Joplin
Published: 2017/03/15
Channel: Matthew Driben
The Heliotrope Bouquet by The Boogie Woogie Kid
The Heliotrope Bouquet by The Boogie Woogie Kid
Published: 2012/07/02
Channel: Boogiewoogiekid
Heliotrope Bouquet
Heliotrope Bouquet
Published: 2012/09/04
Channel: shipwreck2132
heliotrope - Tina Tallon
heliotrope - Tina Tallon
Published: 2012/08/23
Channel: DuoSolo Foundation
Solar System by The Microphones + Heliotrope Bouquet by Foundring
Solar System by The Microphones + Heliotrope Bouquet by Foundring
Published: 2010/04/29
Channel: foundring
Heliotrope Bouquet.m4v
Heliotrope Bouquet.m4v
Published: 2010/10/24
Channel: Andrew Duncan
Heliotrope Bouquet
Heliotrope Bouquet
Published: 2008/09/08
Channel: jim150
2015 San Diego Jazz Fest: Heliotrope Ragtime Orchestra with Katie Cavera
2015 San Diego Jazz Fest: Heliotrope Ragtime Orchestra with Katie Cavera
Published: 2015/12/19
Channel: Bill Schneider
Heliotrope Bouquet by Louis Chauvin and Scott Joplin, performed by James Navan, Piano
Heliotrope Bouquet by Louis Chauvin and Scott Joplin, performed by James Navan, Piano
Published: 2015/05/02
Channel: James Navan
TUTORIAL on "GRACEFUL GHOST RAG" by William Bolcom
TUTORIAL on "GRACEFUL GHOST RAG" by William Bolcom
Published: 2016/08/31
Channel: BachScholar
Héliotrope rencontre le Oud avec Abdelhak Tikerouine
Héliotrope rencontre le Oud avec Abdelhak Tikerouine
Published: 2012/09/24
Channel: Panacheculture
Heliotrope Consort & Ensemble al Verso Reunion Concert (Sept 2013)
Heliotrope Consort & Ensemble al Verso Reunion Concert (Sept 2013)
Published: 2013/09/08
Channel: TheJkassen
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Heliotrope (ca.1878): B.A. Colonna collection (NOAA). This may be the very one Colonna surveyed from 192 miles away.
Gauss's Heliotrope (ca.1822)
Wurdemann's Heliotrope (1866)
Coast Survey, Steinheil, and simple heliotropes c. 1898

The heliotrope is an instrument that uses a mirror to reflect sunlight over great distances to mark the positions of participants in a land survey. The heliotrope was invented in 1821 by the German mathematician Carl Friedrich Gauss.[1][2] The word "heliotrope" is taken from the Greek: helios (Greek: Ἥλιος), meaning "sun", and tropos (Greek: τρόπος), meaning "turn". It is a fitting name for an instrument which can be used to "turn" incoming sunlight (via reflection).

Heliotropes were used in surveys from Gauss's survey in Germany in 1821 through the late 1980s, when GPS measurements replaced the use of the heliotrope in long distance surveys. Colonel Sir George Everest introduced the use of heliotropes into the Great Trigonometric Survey in India around 1831,[3] and the US Coast and Geographic Survey used heliotropes to survey the United States. The Indian specification for heliotropes was updated in 1981,[4] and the American military specification for heliotropes (MIL-H-20194E) was retired on 8 December 1995.[5]

Surveyors used the heliotrope as a specialized form of survey target; it was employed during large triangulation surveys where, because of the great distance between stations (usually twenty miles or more), a regular target would be indistinct or invisible. Heliotropes were often used as survey targets at ranges of over 100 miles. In California, in 1878, a heliotrope on Mount Saint Helena was surveyed by B.A. Colonna of the USCGS from Mount Shasta, a distance of 192 miles (309 km).[6]

The heliotrope was limited to use on sunny days and was further limited (in regions of high temperatures) to mornings and afternoons when atmospheric aberration least affected the instrument-man's line of sight.[7] The heliotrope operator was called a "heliotroper" or "flasher" and would sometimes employ a second mirror for communicating with the instrument station through heliography, a signalling system using impulsed reflecting surfaces. The inventor of the heliograph, a similar instrument specialized for signaling, was inspired by observing the use of heliotropes in the survey of India.

See also[edit]

  • Heliograph, a similar instrument, used in communication

References[edit]

  1. ^ Dodd, A.; Smith, A. (1822). "The Heliotrope, a New Instrument". Arts and Sciences. The Gentleman's Magazine. republished online at Google Books. 92, Part 2: 358. 
  2. ^ Dunnington, G. Waldo (1955). Carl Friedrich Gauss: Titan of Science. New York: Exposition Press. pp. 122–127, 119, 221. ISBN 0-88385-547-X. 
  3. ^ Gleanings in science, Volume 3. Baptist Mission Press. 1831. p. 344. 
  4. ^ Specification for Heliotrope, Surveying. Indian Standards Institution. 1981. 
  5. ^ "MIL-H-20194E Note 1". Assistdocs.com. 
  6. ^ Theodolites: heliotrope at NOAA.gov
  7. ^ Abbe, Cleveland (December 1900). "Meteorology and Geodesy". Monthly Weather Review. XXVIII (12): 545–547. doi:10.1175/1520-0493(1900)28[545:mag]2.0.co;2. Retrieved 10 July 2013. 

External links[edit]

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