Tali: Perbezaan antara semakan

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Yosri (bincang | sumb.)
Laman baru: thumb|200px|right|Gelung tali yang digunakan bagi tali pancing panjang '''Tali''' adalah seutas serat, dipilin atau anyam bersama untuk meningkatkan kekuatan bagi mena...
 
Yosri (bincang | sumb.)
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[[Imej:Rope.jpg|thumb|200px|right|Gelung tali yang digunakan bagi tali pancing panjang]]
 
'''Tali''' adalah seutas serat, dipilin atau anyam bersama untuk meningkatkan kekuatan bagi menarik dan menyambung. Ia mempunyai kekuatan (''tensile'') tetapi terlalu lentur untuk memberikan kekuatan mampatan (contoh., ia boleh digunakan bagi menarik, bukan menolak). Tali lebih tebal dan kukuh berbanding benang, atau akar. Bahan biasa digunakan bagi menghasilkan tali termasuk serat semula jadi seperti [[Manila hemp]], [[hemp]], [[linen]], [[kapas]], [[hut]], dan [[sisal]].
 
[[Serat buatan]] dalam penghasilan tali termasuk [[polypropylene]], [[nylon]], [[polyester]] (contoh. [[polyethylene terephthalate|PET]], [[Vectran]]), [[polyethylene]] (contoh. [[Dyneema|Spectra]]) dan [[Aramid]] (contoh. [[Twaron]], [[Technora]] dan [[Kevlar]]). Sesetengah tali dihasilkan melalui campuran beberapa serat atau menggu8nakan serat co-polimer. Tali juga boleh dibuat dari serat logam. Tali telah dihasilkan dari bahan berserat seperti [[sutera]], bulu kambing biri-biri, dan [[rambut]], tetapi tali sedemikian tidak ada secara meluas. [[Rayon]] merupakan serat dikitar digunakan bagi menghasilkan tali hiasan.
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[[Synthetic fiber]]s in use for rope-making include [[polypropylene]], [[nylon]], [[polyester]]s (e.g. [[polyethylene terephthalate|PET]], [[Vectran]]), [[polyethylene]] (e.g. [[Dyneema|Spectra]]) and [[Aramid]]s (e.g. [[Twaron]], [[Technora]] and [[Kevlar]]). Some ropes are constructed of mixtures of several fibres or use co-polymer fibres. Ropes can also be made out of [[metal]] fibers. Ropes have been constructed of other fibrous materials such as [[silk]], [[wool]], and [[hair]], but such ropes are not generally available. [[Rayon]] is a regenerated fiber used to make decorative rope.
 
Rope is of paramount importance in fields as diverse as [[construction]], [[seafaring]], exploration, sports and communications and has been since [[prehistory|prehistoric]] times. In order to fasten rope, a large number of [[knot]]s have been invented for various uses. [[Pulley]]s are used to redirect the pulling force to another direction, and may be used to create [[mechanical advantage]], allowing multiple strands of rope to share a load and multiply the force applied to the end. [[Winch]]es and [[capstan (nautical)|capstan]]s are machines designed to pull ropes.
 
==HistorySejarah==
[[ImageImej:Ancient_Egypt_rope_manufacture.jpg|thumb|200px|AncientMesir EgyptiansPurba weremerupakan theyang firstpertama tomerekodkan documentperkakasan toolsmenghasilkan for ropemakingtali]]
[[ImageImej:German Ropemaker, around 1460-1480.png|thumb|200px|APembuat [[Germany|German]]tali ropemakerJerman, aroundsekitar 1470 AD]]
[[ImageImej:Turku Medieval Markets, twisting rope.jpg|right|thumb|PublicPertunjukan demonstrationumum ofteknik historicalmenghasilkan ropemakingtali techniquedalam sejarah]]
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The use of ropes for hunting, pulling, fastening, attaching, carrying, lifting, and climbing dates back to prehistoric times and has always been essential to mankind's technological progress. It is likely that the earliest "ropes" were naturally occurring lengths of plant fiber, such as vines, followed soon by the first attempts at twisting and braiding these strands together to form the first proper ropes in the modern sense of the word. [[Fossil|Fossilised]] fragments of "probably two-ply laid rope of about 7 mm diameter" were found in [[Lascaux]] cave, dating to approximately 17,000 [[Before Present|BP]].<ref name="histsci14">J.C. Turner and P. van de Griend (ed.), ''The History and Science of Knots'' (Singapore: World Scientific, 1996), 14.</ref>