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It is a very clever way to grab the end of a cable to thread it through a tube or tunnel. It works like a Chinese finger trap. Is there a general name for this sort of weave or shape or something? The commons cat contains finger traps as well as a traction device using the same shape. It would be nice to have some sort of proper name. Anyone? Anna Frodesiak (talk) 02:06, 1 November 2017 (UTC)[reply]
Is it a type of hollow Rope#Braided rope?Anna Frodesiak (talk) 02:22, 1 November 2017 (UTC)[reply]
I'd like to add to the the article (Towing sock) the fact that there is a loopy thing on the end. It probably has a name but I don't know what it is. Anna Frodesiak (talk) 04:02, 1 November 2017 (UTC)[reply]
Kharon, a simple search for 'cable pulling tension' finds many, many, many, many, many results discussing maximum pulling tensions and related issues for cables, including methods to calculate pulling tensions for cables under various conditions and commercial software to help with plans, and while some look like they may be directed at smaller home runs, others at stuff like "paper mill and your client needs a 400A, 15kV feeder": [2], [3], [4] [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17] [18], [19], [20] (also look at the next page), [21], [22] (see also page 70, 58 and 59).
A number of these are from cable manufacturers themselves, and some reference a study by the Insulated Cable Engineers Association, or other studies or publications (e.g. from the IEEE or AEIC). At least some of these specifically mention or deal with a basketweave (or basket or mesh or wiremesh) grip which from Google Image search results (well also at least one of the above results) e.g. [23] [24] [25] [26], seems to be the same sort of thing we are dealing with here.
Others refer to a pulling eye which is different and only attaches to the real end of the cable [27] [28] [29] (some sources also suggest you can attach one to a basketweave grip although I'm a bit confused by this since most sources seem to show that the basket grip already has a buil in grip. Interesting, a pulling eye generally allows greater pulling tension but I don't think this is because of less damage to the cable, actually you still need to take care you don't exceed whatever it allowed for your cable. Instead I'm fairly sure it's just to do with what the equipment can survive, see the earlier results.
Note a pulling eye is different from a pulling grip, Corning Optical and others seems to use pulling grip to include what others call a basketweave or basket grip [30] [31] (which incidentally is of course another manufacturer who doesn't seem to think there's anything wrong with such devices in the right circumstances).
Anyway, so either all of these are super unprofessional as you suggest, or as others have suggested you don't know what you're talking about.
Thank you all for the very educational input.
Can anyone find a non-spammy ref for Towing sock? I'd hate to leave it unsourced. I tried searching .edu, .gov, and .org sites, but no luck. Anna Frodesiak (talk) 21:26, 1 November 2017 (UTC)[reply]
I'm trying to get a better understanding of how photons work to enable visual perception.
I work at a location nearby an airport. During the day I may look up to the sky and see a plane up in the sky shortly after takeoff. My limited understanding is that photons coming from that plane in the sky and entering into my eye, allowing me to perceive a plane in the sky. If this is correct, I have a few questions to further my understanding:
How do the photons that entered my eye emanate from the plane? I'm assuming that the plane did not create the photons, and that most likely they originated from our Sun. So did they bounce off the earth in the direction of the plan and then bounce off of the plane and go into my eye? If so, how do photons bounce off of the earth? Do they bounce off of the earth the way a laser bounces off of a mirror or do they "scatter" off of earth in all directions? Likewise, with photons reflecting off of the plane - do they scatter in all directions or do they have a more predictable path of travel?
And finally what happens to the photon after it enters my eye? Does the photon pass through? Reflect or scatter back out in another direction? Get changed into an electrical signal and therefor (for lack of a better word) "die" as a photon?
I wouldn't be surprised if full and complete answers to my questions involved long and pronounced explanations. I welcome such, but if it makes it any easier, am really just looking for a general understanding of what is happening as I look up to the sky and perceive things.
128.229.4.2 (talk) 20:08, 1 November 2017 (UTC)[reply]
These are great responses to my questions -- thank you all so much for taking the time to share the information and references you provided! 128.229.4.2 (talk) 12:37, 2 November 2017 (UTC)[reply]