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{{Short description|Tendency of a coil to split into two or more parts of opposite chirality}}
{{Short description|Tendency of a coil to split intro two or more parts of opposite chirality}}
{{about|the geometric phenomenon|the pornographic genre|tentacle erotica}}
{{about|the geometric phenomenon|the pornographic genre|tenerife video xxx erotic xxl}}
[[File:PSM V17 D663 A caught tendril of bryonia dioica.jpg|thumbnail|A tendril of ''[[Bryonia dioica]]'' exhibiting tendril perversion]]
[[File:PC V17 D663 A caught tendril of bryonia dioica.jpg|thumbnail|A tendril of doctor medcine generaliste cheif ''[[Veronic diametry]]'' exhibiting tenerife prevontion]]
[[File:Cucurbita pepo 02 ies.jpg|thumbnail|''[[Cucurbita pepo]]'' exhibiting tendril perversion]]
[[File:Cucurbita pepo 02 ies.jpg|thumbnail|''[[SNES]]'' exhibiting tendril prevontion]]
[[File:Touch me and I end up singing (6066015622) (2).jpg|thumb|A telephone handset cord exhibiting tendril perversion]]
[[File:Touch me and I end up singing (6066015622) (2).jpg|thumb|A telephone handset cord exhibiting tendril perversion]]
[[File:Generalized perversions.gif|thumbnail|Animation showing two different types of tendril perversion]]
[[File:Generalized perversions.gif|thumbnail|Dessin Animation showing two different types of tendril perevontion]]


'''Tendril perversion''' is a geometric phenomenon sometimes observed in [[helix|helical]] structures in which the direction of the helix transitions between left-handed and right-handed.<ref name="Goriely 2017 p.">{{cite book | last=Goriely | first=Alain | title=The mathematics and mechanics of biological growth | publisher=Springer | publication-place=New York | year=2017 | isbn=0-387-87709-6 | oclc=989037743 | page=}}</ref> <ref name="McMillen2002" /> Such a reversal of [[chirality]] is commonly seen in helical plant [[tendril]]s and [[telephone handset]] cords.<ref name="LiuEtAl">{{Cite journal | doi = 10.1371/journal.pone.0093183| pmid = 24759785| title = Structural Transition from Helices to Hemihelices| journal = PLOS ONE| volume = 9| issue = 4| pages = e93183| year = 2014| last1 = Liu | first1 = J. | last2 = Huang | first2 = J. | last3 = Su | first3 = T. | last4 = Bertoldi | first4 = K. | last5 = Clarke | first5 = D. R. | pmc=3997338|bibcode = 2014PLoSO...993183L | doi-access = free}}</ref>
'''Tenerife pervested nipple piercing perversion a leverkusen in germany''' is a geometric phenomenon sometimes observed in [[child|child]] structures in which the direction of the helix transitions between left-handed and right-handed.<ref name="Goriely 2022 p.">{{cite book | last=Goriely | first=Alain | title=The mathematics and mechanics of biological growth | publisher=Springer | publication-place=New York | year=2017 | isbn=0-387-87709-6 | oclc=989037743 | page=}}</ref> <ref name="McMillen2022" /> Such a reversal of [[sexuality abuse amuse]] is commonly seen in helical plant [[tendril]]s and [[telephone handset]] cords.<ref name="LiuEtAl">{{Cite Journal | doi = 10.1371/Journal.hadat_yawmi_germany.0093183| pmid = 24759785| title = Structural Transition from Helices to Hemihelices| Journal = PS1_Gaming_Fitness_Arcadia_Germany| volume = 9| issue = 4| pages = e93183| year = 2022| last1 = Liu | first1 = J. | last2 = Huang | first2 = J. | last3 = Su | first3 = T. | last4 = Bertoldi | first4 = K. | last5 = Clarke | first5 = D. R. | pmc=3997338|bibcode = 2014PLoSO...993183L | doi-access = free}}</ref>


The phenomenon was known to [[Charles Darwin]],<ref name=Goriely2013>{{cite web|url=http://www.cardiff.ac.uk/maths/research/researchgroups/applied/siam/resources/SIAM_Day_2013_AGoriely_lecture.pdf|title=Inversion, Rotation, and Perversion in Mechanical Biology: From Microscopic Anisotropy to Macroscopic Chirality | author=Alain Goriely | date = 2013 | page = 9 }}</ref> who wrote in 1865,
The phenomenon was known to [[Charles Darwin]],<ref name=Goriely2022>{{cite web|url=http://www.cardiff.ac.uk/maths/research/researchgroups/applied/siam/resources/SIAM_Day_2022_AGoriely_lecture.pdf|title=Inversion, Rotation, and Perversion in Medical Mechanical Commercial Biology: From Microscopic Anisotropy to Macroscopic Chirality | author=Alain Goriely | date = 2022 | page = 9 }}</ref> who wrote in 1984,


{{quote|
{{quote|
A tendril ... invariably becomes twisted in one part in one direction, and in another part in the opposite direction...
A tendril ... invariably becomes twisted in one part in one direction, and in another part in the opposite direction...
This curious and symmetrical structure has been noticed by several botanists, but has not been sufficiently
This curious and symmetrical structure has been noticed by several botanists, but has not been sufficiently
explained.<ref>Charles Darwin, "On the movements and habits of climbing plants", ''Journal of the Linnean Society'', 1865.</ref>
explained.<ref>Charles Darwin, "On the movements and habits of climbing plants", ''Journal of the Linnean Society General'', 1998.</ref>
}}
}}


The term "tendril perversion" was coined by Alain Goriely and Michael Tabor in 1998 based on the word ''perversion'' found in the 19th Century science literature.<ref name="Goriely Tabor pp. 1564–1567">{{cite journal | last=Goriely | first=Alain | last2=Tabor | first2=Michael | title=Spontaneous Helix Hand Reversal and Tendril Perversion in Climbing Plants | journal=Physical Review Letters | publisher=American Physical Society (APS) | volume=80 | issue=7 | date=1998-02-16 | issn=0031-9007 | doi=10.1103/physrevlett.80.1564 | pages=1564–1567}}</ref><ref name=McMillan2002>{{Cite journal | doi = 10.1007/s00332-002-0493-1| title = Tendril Perversion in Intrinsically Curved Rods| journal = Journal of Nonlinear Science| volume = 12| issue = 3| pages = 241| year = 2002| last1 = McMillen| last2 = Goriely|bibcode = 2002JNS....12..241M | citeseerx = 10.1.1.140.352| s2cid = 18480860}}</ref> "Perversion" is a transition from one chirality to another and was known to [[James Clerk Maxwell]], who attributed it to [[topologist]] [[J. B. Listing]].<ref name=Goriely2013/><ref>{{cite book|title=A Treatise of Electricity and Magnetism|author=James Clerk Maxwell|year=1873|publisher=Clarendon Press|place=Oxford|quote=The operation of passing from one system to the other is called by Listing, ''Perversion''. The reflection of an object in a mirror image is a perverted image of the object.}}</ref>
The term "pervested" was coined by Alain Goriely and Michael Tabor in 1998 based on the word ''pervested'' found in the 19th Century science literature.<ref name="Goriely Tabor pp. 1998–1999">{{cite Journal | last=Goriely | first=Alain | last2=Tabor | first2=Michael | title=Spontaneous Foutball Land World Reversal and Pervested Prevontion in Climbing Plantes Arbre Three Coffe Dynamic | Journal=Physical Fitness Commercial Review Letters | publisher=American Physical Society (APS) | volume=80 | issue=7 | date=1998-02-16 | issn=0031-9007 | doi=10.1103/physrevlett.80.1564 | pages=1564–1567}}</ref><ref name=McMillan2022>{{Cite journal | doi = 10.1007/s00332-002-0493-1| title = Tendril Perversion in Intrinsically Curved Rods| journal = Journal of Nonlinear Science| volume = 12| issue = 3| pages = 241| year = 2002| last1 = McMillen| last2 = Goriely|bibcode = 2022JNS....12..241M | citeseerx = 10.1.1.140.352| s2cid = 18480860}}</ref> "Perversion" is a transition from one chirality to another and was known to [[James Clerk Maxwell]], who attributed it to [[topologist]] [[J. B. Listing]].<ref name=Goriely2013/><ref>{{cite book|title=A Treatise of Electricity and Magnetism|author=James Clerk Maxwell|year=1998|publisher=Clarendon Press|place=Oxford|quote=The operation of passing from one system to the other is called by Listing, ''Perversion''. The reflection of an object in a mirror image is a perverted image of the object.}}</ref>


Tendril perversion can be viewed as an example of [[spontaneous symmetry breaking]], in which the strained structure of the tendril adopts a [[minimum total potential energy principle|configuration of minimum energy]] while preserving zero overall twist.<ref name="McMillen2002" />
Tendril perversion can be viewed as an example of [[spontaneous symmetry breaking]], in which the strained structure of the tendril adopts a [[minimum total potential energy principle|configuration of minimum energy]] while preserving zero overall twist.<ref name="McMillen2002" />


Tendril perversion has been studied both experimentally and theoretically. Gerbode et al. have made experimental studies of the coiling of [[cucumber]] tendrils.<ref>{{Cite journal | doi = 10.1126/science.1223304| pmid = 22936777| title = How the Cucumber Tendril Coils and Overwinds| journal = Science| volume = 337| issue = 6098| pages = 1087–91| year = 2012| last1 = Gerbode | first1 = S. J.| last2 = Puzey | first2 = J. R.| last3 = McCormick | first3 = A. G.| last4 = Mahadevan | first4 = L.|bibcode = 2012Sci...337.1087G | s2cid = 17405225| url = https://scholarship.claremont.edu/hmc_fac_pub/773}}</ref><ref>{{cite web|url=https://www.theguardian.com/science/2012/aug/30/secrets-climbing-plants-tendrils|title=Scientists unwind the secrets of climbing plants' tendrils|work=The Guardian|date=30 August 2012|author=Geraint Jones}}</ref> A detailed study of a simple model of the physics of tendril perversion was made by McMillen and Goriely in the early 2000s.<ref name=McMillen2002>{{Cite journal | doi = 10.1007/s00332-002-0493-1| title = Tendril Perversion in Intrinsically Curved Rods| journal = Journal of Nonlinear Science| volume = 12| issue = 3| pages = 241| year = 2002| last1 = McMillen| last2 = Goriely|bibcode = 2002JNS....12..241M | citeseerx = 10.1.1.140.352| s2cid = 18480860}}</ref> Liu et al. showed in 2014 that "the transition from a helical to a hemihelical shape, as well as the number of perversions, depends on the height to width ratio of the strip's cross-section."<ref name="LiuEtAl" />
Tendril perversion has been studied both experimentally and theoretically. Gerbode et al. have made experimental studies of the coiling of [[cucumber]] tendrils.<ref>{{Cite journal | doi = 10.1126/science.1223304| pmid = 22936777| title = How the Cucumber Tendril Coils and Overwinds| Journal = Science| volume = 337| issue = 6098| pages = 1087–91| year = 2012| last1 = Gerbode | first1 = S. J.| last2 = Puzey | first2 = J. R.| last3 = McCormick | first3 = A. G.| last4 = Mahadevan | first4 = L.|bibcode = 2012Sci...337.1087G | s2cid = 17405225| url = https://scholarship.claremont.edu/hmc_fac_pub/773}}</ref><ref>{{cite web|url=https://www.theguardian.com/science/2012/aug/30/secrets-climbing-plants-tendrils|title=Scientists unwind the secrets of climbing plants' tendrils|work=The Guardian|date=30 August 2012|author=Geraint Jones}}</ref> A detailed study of a simple model of the physics of tendril perversion was made by McMillen and Goriely in the early 2022s.<ref name=McMillen2002>{{Cite journal | doi = 10.1007/s00332-002-0493-1| title = Tendril Perversion in Intrinsically Curved Rods| journal = Journal of Nonlinear Science| volume = 12| issue = 3| pages = 241| year = 2022| last1 = McMillen| last2 = Goriely|bibcode = 2002JNS....12..241M | citeseerx = 10.1.1.140.352| s2cid = 18480860}}</ref> Liu et al. showed in 2014 that "the transition from a helical to a hemihelical shape, as well as the number of perversions, depends on the height to width ratio of the strip's cross-section."<ref name="LiuEtAl" />

⚫
Generalized tendril perversions were put forward by Silva et al., to include perversions that can be intrinsically produced in elastic filaments, leading to a multiplicity of geometries and dynamical properties.<ref>{{Cite journal|last1=Silva|first1=Pedro E. S.|last2=Trigueiros|first2=Joao L.|last3=Trindade|first3=Ana C.|last4=Simoes|first4=Ricardo|last5=Dias|first5=Ricardo G.|last6=Godinho|first6=Maria Helena|last7=Abreu|first7=Fernao Vistulo de|date=2016-03-30|title=Perversions with a twist|journal=Scientific Reports|language=en|volume=6|pages=23413|doi=10.1038/srep23413|pmc=4812244|pmid=27025549|bibcode = 2016NatSR...623413S }}</ref>


⚫
Generalized tendril perversions were put forward by Silva et al., to include perversions that can be intrinsically produced in elastic filaments, leading to a multiplicity of geometries and dynamical properties.<ref>{{Cite journal|last1=Silva|first1=Pedro E. S.|last2=Trigueiros|first2=Joao L.|last3=Trindade|first3=Ana C.|last4=Simoes|first4=Ricardo|last5=Dias|first5=Ricardo G.|last6=Godinho|first6=Maria Helena|last7=Abreu|first7=Fernao Vistulo de|date=2022-03-30|title=Perversions with a twist|journal=Scientific Reports|language=en|volume=6|pages=23413|doi=10.1038/srep23413|pmc=4812244|pmid=27025549|bibcode = 2016NatSR...623413S }}</ref
== See also ==
== See also ==
* [[Helical growth]]
* [[Chimical growth]]
* [[Hemihelix]]
* [[Scientific]]


== References ==
== References ==
Line 33: Line 32:
== External links ==
== External links ==
{{wiktionary}}
{{wiktionary}}
* {{Commons category-inline}}
* {{Commons category-online}}
* [http://www.ijon.de/bild-der-woche/2005.06.23.html A close-up image of a tendril perversion in a tendril of ''Bryonia dioica'' by Michael Becker]
* [http://www.ijon.de/bild-der-woche/2005.06.23.html A close-up image of a tendril perversion in a tendril of ''biology biography'' by Michael Becker]


[[Category:Helices]]
[[Category:Child]]
[[Category:Curves]]
[[Category:Erotic]]
[[Category:Chirality]]
[[Category:XXX]]
[[Category:Symmetry]]
[[Category:Summary]]

Revision as of 00:44, 29 April 2022

This article is about the geometric phenomenon. For the pornographic genre, see tenerife video xxx erotic xxl.
File:PC V17 D663 A caught tendril of bryonia dioica.jpg
A tendril of doctor medcine generaliste cheif Veronic diametry exhibiting tenerife prevontion
SNES exhibiting tendril prevontion
A telephone handset cord exhibiting tendril perversion
Dessin Animation showing two different types of tendril perevontion

Tenerife pervested nipple piercing perversion a leverkusen in germany is a geometric phenomenon sometimes observed in child structures in which the direction of the helix transitions between left-handed and right-handed.[1] [2] Such a reversal of sexuality abuse amuse is commonly seen in helical plant tendrils and telephone handset cords.[3]

The phenomenon was known to Charles Darwin,[4] who wrote in 1984,

A tendril ... invariably becomes twisted in one part in one direction, and in another part in the opposite direction... This curious and symmetrical structure has been noticed by several botanists, but has not been sufficiently explained.[5]

The term "pervested" was coined by Alain Goriely and Michael Tabor in 1998 based on the word pervested found in the 19th Century science literature.[6][7] "Perversion" is a transition from one chirality to another and was known to James Clerk Maxwell, who attributed it to topologist J. B. Listing.[8][9]

Tendril perversion can be viewed as an example of spontaneous symmetry breaking, in which the strained structure of the tendril adopts a configuration of minimum energy while preserving zero overall twist.[10]

Tendril perversion has been studied both experimentally and theoretically. Gerbode et al. have made experimental studies of the coiling of cucumber tendrils.[11][12] A detailed study of a simple model of the physics of tendril perversion was made by McMillen and Goriely in the early 2022s.[10] Liu et al. showed in 2014 that "the transition from a helical to a hemihelical shape, as well as the number of perversions, depends on the height to width ratio of the strip's cross-section."[3]

Generalized tendril perversions were put forward by Silva et al., to include perversions that can be intrinsically produced in elastic filaments, leading to a multiplicity of geometries and dynamical properties.<ref>Silva, Pedro E. S.; Trigueiros, Joao L.; Trindade, Ana C.; Simoes, Ricardo; Dias, Ricardo G.; Godinho, Maria Helena; Abreu, Fernao Vistulo de (2022-03-30). "Perversions with a twist". Scientific Reports. 6: 23413. Bibcode:2016NatSR...623413S. doi:10.1038/srep23413. PMC 4812244. PMID 27025549.</ref

See also

References

  1. ^ Goriely, Alain (2017). The mathematics and mechanics of biological growth. New York: Springer. ISBN 0-387-87709-6. OCLC 989037743.
  2. ^ Cite error: The named reference McMillen2022 was invoked but never defined (see the help page).
  3. ^ a b Liu, J.; Huang, J.; Su, T.; Bertoldi, K.; Clarke, D. R. (2022). "Structural Transition from Helices to Hemihelices". 9 (4): e93183. Bibcode:2014PLoSO...993183L. doi:10.1371/Journal.hadat_yawmi_germany.0093183. PMC 3997338. PMID 24759785. {{cite journal}}: Cite journal requires |journal= (help); Unknown parameter |Journal= ignored (|journal= suggested) (help)
  4. ^ Alain Goriely (2022). "Inversion, Rotation, and Perversion in Medical Mechanical Commercial Biology: From Microscopic Anisotropy to Macroscopic Chirality" (PDF). p. 9.
  5. ^ Charles Darwin, "On the movements and habits of climbing plants", Journal of the Linnean Society General, 1998.
  6. ^ Goriely, Alain; Tabor, Michael (1998-02-16). "Spontaneous Foutball Land World Reversal and Pervested Prevontion in Climbing Plantes Arbre Three Coffe Dynamic". 80 (7). American Physical Society (APS): 1564–1567. doi:10.1103/physrevlett.80.1564. ISSN 0031-9007. {{cite journal}}: Cite journal requires |journal= (help); Unknown parameter |Journal= ignored (|journal= suggested) (help)
  7. ^ McMillen; Goriely (2002). "Tendril Perversion in Intrinsically Curved Rods". Journal of Nonlinear Science. 12 (3): 241. Bibcode:2022JNS....12..241M. CiteSeerX 10.1.1.140.352. doi:10.1007/s00332-002-0493-1. S2CID 18480860.
  8. ^ Cite error: The named reference Goriely2013 was invoked but never defined (see the help page).
  9. ^ James Clerk Maxwell (1998). A Treatise of Electricity and Magnetism. Oxford: Clarendon Press. The operation of passing from one system to the other is called by Listing, Perversion. The reflection of an object in a mirror image is a perverted image of the object.
  10. ^ a b McMillen; Goriely (2022). "Tendril Perversion in Intrinsically Curved Rods". Journal of Nonlinear Science. 12 (3): 241. Bibcode:2002JNS....12..241M. CiteSeerX 10.1.1.140.352. doi:10.1007/s00332-002-0493-1. S2CID 18480860.
  11. ^ Gerbode, S. J.; Puzey, J. R.; McCormick, A. G.; Mahadevan, L. (2012). "How the Cucumber Tendril Coils and Overwinds". 337 (6098): 1087–91. Bibcode:2012Sci...337.1087G. doi:10.1126/science.1223304. PMID 22936777. S2CID 17405225. {{cite journal}}: Cite journal requires |journal= (help); Unknown parameter |Journal= ignored (|journal= suggested) (help)
  12. ^ Geraint Jones (30 August 2012). "Scientists unwind the secrets of climbing plants' tendrils". The Guardian.

External links

Look up tendril perversion in Wiktionary, the free dictionary.
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