durchgehende physikalische Schraube

22:54 Jul 6, 2014
German to English translations [PRO]
Science - Physics / symmetry operations and crystallography
German term or phrase: durchgehende physikalische Schraube
My request is for someone with expertise in symmetry theory to tell me a) how this term is translated and b) whether my translation of the context sentence is in essence correct.

Gleitdrehung: die Koppelung von Translation und Drehung. Fallen Dreh- und Gleitachse zusam-
men, ergibt sich die Schraubung, und ist dabei die Zähligkeit unendlich, entsteht eine durchge- hende physikalische Schraube.

If the axis of rotation and the axis of glide coincide, a screw displacement results. If the number of axes of symmetry is infinite, a continuous physical screw results.

If anyone could please recommend a resource?
Alison Kirkland
Local time: 10:59


Summary of answers provided
4all through fysical screw
Machiel van Veen (X)
3continuous helix
Carola F Berger


  

Answers


14 days   confidence: Answerer confidence 4/5Answerer confidence 4/5
all through fysical screw


Explanation:
Dikke van Dale Dutch - English.

Machiel van Veen (X)
Netherlands
Local time: 11:59
Native speaker of: Native in DutchDutch
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19 days   confidence: Answerer confidence 3/5Answerer confidence 3/5
continuous helix


Explanation:
I would render the Gleitachse as "the line of translation", and a "durchgehende physikalische Schraube" is probably a continuous helix (I'm not sure about the adjective "physikalische" - isn't everything physical?).

Perhaps this Wikipedia entry plus references can help: http://en.wikipedia.org/wiki/Screw_axis#Crystallography

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Note added at 19 days (2014-07-26 02:05:09 GMT)
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I just realized what the author means by the adjective "physikalsch" --

The infinite symmetry manifests itself physically as a continuous helical structure. So, yes, continuous helix should be correct.


    Reference: http://en.wikipedia.org/wiki/Screw_axis#Crystallography
Carola F Berger
United States
Local time: 02:59
Specializes in field
Native speaker of: Native in GermanGerman
PRO pts in category: 4
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