Jul 27, 2022 13:41
2 yrs ago
26 viewers *
French term

ligne propre- eigenline

French to English Tech/Engineering Electronics / Elect Eng superconductors
Context:
Les premières portions 50 des conducteurs 30A, 30B sont décalées successivement selon la deuxième direction Y les unes par rapport aux autres. Par exemple, chaque première portion 50 s’étend selon une ligne propre, les lignes propres étant parallèles entre elles.

PR task and suspicious about this particular translation:
The first portions 50 of the conductors 30A, 30B are successively offset according to the second direction Y relative to each other. For example, each first portion 50 extends according to an eigenline, the eigenlines being parallel to each other.

The subject matter is: Device comprising Josephson junctions

TIA Chris.
Proposed translations (English)
3 +2 separate/different line
2 eigenline

Discussion

chris collister Jul 28, 2022:
Eigen is indeed of German origin (cf eigenfrequency, eigenvalue, etc.) but now used to form these bastard words that have been part of mainstream physics terminology for decades. Older texts sometimes use "proper" instead of eigen. Although I wrote a final-year project on superconductors (including J-Js) a thousand years ago, I never came across an eigenline.
How can we be sure that these "propres lignes" are related to the physics of superconductors rather than just the geometry or layout? Without more context, I would think "eigenline" unlikely.
Emmanuella Jul 27, 2022:
@ Bashiqa - interesting. In any case, 'eigen' comes from Dutch/German.

https://books.google.fr/books?id=ihlHEAAAQBAJ&pg=PA504&lpg=P...
writeaway Jul 27, 2022:
@philgoddard Sorry-I'll stay out of this
philgoddard Jul 27, 2022:
Writeaway I don't understand your comment. I didn't say anything about it being German. Eigenline is English, and I don't believe it's the correct translation.
writeaway Jul 27, 2022:
@philgoddard It's NOT German

Math 240: Eigenlines of Linear Systems
https://www.math.ksu.edu › ~albin › labs › 10_eigenlines
Nov 4, 2017 — A nonzero vector v → is called an eigenvector of a matrix A if there is a number λ such that A v → = λ v → .

How to find the eigenline equation - Math Stack Exchange
https://math.stackexchange.com › questions › how-to-fi...
Apr 20, 2015 — I don't know what the word, "eigenline" means. · After some searching, it looks like an eigenline is simply a one dimensional eigenspace. · the ..
philgoddard Jul 27, 2022:
I don't think "eigenline", a mathematical abstraction, makes any sense here. Doesn't "propre" just mean "separate"?
Bashiqa (asker) Jul 27, 2022:
Don`t worry, I`ve sent question to client. This sort of maths level did not exist when I went to school, so not likely to be "in the know". Enjoy your afternoon, Chris.
writeaway Jul 27, 2022:
@Bashiqa This is way above my pay grade. Math and I have always gone our separate ways.
Bashiqa (asker) Jul 27, 2022:
@writeaway This is intersting. It indicates, if I have read correctly, that it means its own characteristic.
https://books.google.fr/books?id=ihlHEAAAQBAJ&pg=PA504&lpg=P...
Bashiqa (asker) Jul 27, 2022:
@writeaway Yes, I found this and decided I would post a question. Not certain how a space can only have 1 demension, but not intothe higher realms of physics.
writeaway Jul 27, 2022:
@Bashiqa I removed my post because the Dutch would be spelled differently. My bad.
I did find this:

eigenline - Wiktionary

https://en.wiktionary.org › wiki › eigenline
NounEdit. eigenline (plural eigenlines). (mathematics) A one-dimensional eigenspace.

I can't help out more than this. It's way over my head.
Bashiqa (asker) Jul 27, 2022:
@ writeaway I did wonder if it was German, so it has not been translated, thank you.

Proposed translations

+2
2 hrs
French term (edited): ligne propre
Selected

separate/different line

I don't believe a complex mathematical abstraction fits the context. Surely, as the previous sentence indicates, it's just describing their physical alignment.

My examples come from a different context, but I believe they support my answer.

Chaldée s'est développée suivant une ligne propre
http://books.google.com.sv/books?id=fDHTpL4VL18C&pg=PR48&lpg... une ligne propre"&f=false

Chaque section cantonale s'est développée en suivant une ligne propre
http://solidarite-internationale-pcf.fr/article-36666650.htm...




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Note added at 2 hrs (2022-07-27 16:04:32 GMT)
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"A separate line" could be translated into German as "eine eigene Linie", so maybe that's where the confusion has arisen.
Peer comment(s):

agree Daryo : Whatever would be the German version, simply "laid each along their own distinct parallel line" makes most sense. Can't see how any "scale factor" could apply to these lines.
10 hrs
agree FPC
2 days 16 hrs
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thank you."
1 hr

eigenline

I've found one source with all the necessary elements...I don't know if it quite rates as a guess.

https://www.emis.de/journals/SIGMA/2017/054/

Like writeaway, maths and very advanced physics and me, well, ughhh, really.
But all the right words are on that web page!


Good you've asked the client.

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Note added at 1 hr (2022-07-27 15:34:47 GMT)
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Chris, well, I posted the answer supposing a situation where you had nothing else to go on, even though I did know that you had asked the client at that point.

I would rely on this reference and I would also go for "eigenline" based on the fact that the translator has made a really big call by going for this translation and not for something literal, the easy way out, so it can probably be assumed s/he knew what s/he was doing.
Note from asker:
Client response: way above my head, no idea, good luck. Ans she is usually very good at answering my questions.
Peer comment(s):

agree Bourth : I've seen enough eigenvalues, eigenmodes and eigenvectors in my time for this to be highly plausible.
7 hrs
Thanks CadastreToulous! That's my point, really, the translator has made a big call, so if there's no other info available...
disagree Daryo : makes no sense in this text. These are just plain "parallel lines" - can't se anything resembling an "eigenvalue" nor an "eigenvector" of dimension 1.
11 hrs
Something went wrong...

Reference comments

2 hrs
Reference:

clue

https://www.proz.com/kudoz/french-to-english/mathematics-sta...

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Note added at 2 hrs (2022-07-27 15:51:06 GMT)
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Valeurs propres et vecteurs propres
https://stringfixer.com › Eigensystem
· Translate this page
En algèbre linéaire , un vecteur propre ( / aɪ ɡ ə n ˌ v ɛ k t ər / ) ou vecteur ... The eigenvectors associated with these complex eigenvalues are also ...
Peer comments on this reference comment:

neutral Daryo : yes, but THAT version of "ligne propre [/ vecteur propre / valeur propre]" makes no sense in this text, whichever way you try.
10 hrs
Something went wrong...
12 hrs
Reference:

Paralel lines & Josephson junctions


Josephson junction array chip developed by the National Institute of Standards and Technology as a standard volt


Josephson effect

In physics, the Josephson effect is a phenomenon that occurs when two superconductors are placed in proximity, with some barrier or restriction between them. It is an example of a macroscopic quantum phenomenon, where the effects of quantum mechanics are observable at ordinary, rather than atomic, scale. The Josephson effect has many practical applications because it exhibits a precise relationship between different physics quantities, such as voltage and frequency, facilitating highly accurate measurements.

The Josephson effect produces a current, known as a supercurrent, that flows continuously without any voltage applied, across a device known as a Josephson junction (JJ). These consist of two or more superconductors coupled by a weak link. The weak link can be a thin insulating barrier (known as a superconductor–insulator–superconductor junction, or S-I-S), a short section of non-superconducting metal (S-N-S), or a physical constriction that weakens the superconductivity at the point of contact (S-c-S).
...
https://en.wikipedia.org/wiki/Josephson_effect


Espaces propres, multiplicité géométrique et base propre
Étant donné une valeur propre λ , considérons l'ensemble

{displaystyle E=left{mathbf {v} :T(mathbf {v} )=lambda mathbf {v} right},}
qui est l'union du vecteur nul avec l'ensemble de tous les vecteurs propres associés à λ . E est appelé espace propre ou espace caractéristique de T associé à λ .

Par définition d'une transformation linéaire,
....
Ainsi, u + v et α v sont soit des vecteurs nuls, soit des vecteurs propres de T associés à λ , à savoir u + v , α v ∈ E , et E est fermé sous addition et multiplication scalaire. Le sous - espace E associé à λ est donc un sous - espace linéaire de V . [40] Si ce sous-espace a la dimension 1, on l'appelle parfois une ligne propre . [41]
https://stringfixer.com/fr/Eigenvalue
Note from asker:
Thank you. Good to have someone with expert knowledge of very advanced physics.
Something went wrong...
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