A chain is a series of connected links which are typically made of metal. A chain may consist of two or more links.
Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped, which make the chain flexible in two dimensions (The fixed third dimension being a chain's length.)
Those designed for transferring power in machines have links designed to mesh with the teeth of the sprockets of the machine, and are flexible in only one dimension. They are known as roller chains, though there are also non-roller chains such as block chain.
Two distinct chains can be connected using a quick link which resembles a carabiner with a screw close rather than a latch.
Uses for chain
Uses for chain include:
Chain of office, collar or heavy gold chain worn as insignia of office or a mark of fealty in medieval Europe and the United Kingdom
Decorating clothing, some people wear wallets with chains connected to their belts, or pants decorated with chains
In mathematics, a linear order, total order, simple order, or (non-strict) ordering is a binary relation on some setX, which is transitive, antisymmetric, and total (this relation is denoted here by infix ≤). A set paired with a total order is called a totally ordered set, a linearly ordered set, a simply ordered set, or a chain.
If X is totally ordered under ≤, then the following statements hold for all a, b and c in X:
Antisymmetry eliminates uncertain cases when both a precedes b and b precedes a. A relation having the property of "totality" means that any pair of elements in the set of the relation are comparable under the relation. This also means that the set can be diagrammed as a line of elements, giving it the name linear.Totality also implies reflexivity, i.e., a ≤ a. Therefore, a total order is also a partial order. The partial order has a weaker form of the third condition. (It requires only reflexivity, not totality.) An extension of a given partial order to a total order is called a linear extension of that partial order.
A chain (ch) is a unit of length. It measures 66 feet, or 22 yards, or 100 links, or 4 rods (20.1168 m). There are 10 chains in a furlong, and 80 chains in one statute mile. An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice.
By extension, chainage (running distance) is the distance along a curved or straight survey line from a fixed commencing point, as given by an odometer.
The chain was commonly used with the mile to indicate land distances and in particular in surveying land for legal and commercial purposes. Starting in the 19th centary, the chain was used as a sub division with the mile to show distances between railway stations, tunnels and bridges. In medieval times, local measures were commonly used, and many units were adopted that gave manageable units; for example the distance from London to York could be quoted in inches, but the resulting huge number would be unmemorable. The locally used units were often inconsistent from place to place.
A few local residents came to her rescue, and bashed the chain-snatchers before handing them over to ICF police ... Prakash was already involved in a chain-snatching cases in Peravallur, Pulianthope and Adambakkam.
+Text Size. SmallMediumLarge. ARTICLES. Mumbai. Worker killed over theft suspicion, 11 arrested. After 50-day trial, chain snatcher gets 3 years’ RI. ‘Locally, govt refuses seal on Christian weddings’. HC. Owner-tenant dispute on deposit can go to arbritrator. MUMBAI ... .
+Text Size. SmallMediumLarge. ARTICLES. Accused in moral policing case dies. 5 Star gives a fitting reply to controversies surrounding third umpire. V K Mathews is new GTech chairman. Chain snatcher killed in road accident. Thiruvananthapuram... Pangodu police have registered a case under section 174 of IPC for unnatural death ... .
Chain snatcher dies in road accident in Thiruvananthapuram... A 17-year-old boy, an accused in a chain snatching case, died on Sunday when the bike he was riding crashed into a road divider on the national highway at Paroorkuzhi Pallichal near Naruvamoodu here, police said.
Chain snatcher killed in road accident ... Two youths who were fleeing on a two-wheeler after snatching a golden chain of a woman at Thakkalai met with an accident at Pallichal near Naruvamoodu on Sunday ... recovered 11 sovereigns of gold chain.
+Text Size. SmallMediumLarge. ARTICLES. 3 of a family fall sick after consuming fish. Avid gamer or an occasional, the OnePlus 10R 5G is the MVP you cannot skip!. Chain snatcher dies in road accident in Thiruvananthapuram. Kerala... Thiruvananthapuram ... They were discharged on Sunday ... .
+Text Size. SmallMediumLarge. ARTICLES. Bike rental shop destroyed in fire. Avid gamer or an occasional, the OnePlus 10R 5G is the MVP you cannot skip!. Reason behind KSRTC strike purely political, alleges Raju. Chain snatcher dies in road accident in Thiruvananthapuram. Thiruvananthapuram ... The other floors in the building were vacant ... .
Police nab notorious chain snatcher in Kalyan... The Mahatma Phule police arrested a notorious chain snatcher for stealing gold chain of a woman in the city recently ... On the morning on April 3, the 32-year-old allegedly snatched gold chain of a 66-year-old woman near Lourdes church in Rambaug area in Kalyan.
+Text Size. SmallMediumLarge. ARTICLES. Undertrial, three others booked for giving fake papers. Here’s why the Samsung GalaxyM53 5G is a best buy under 25K ...Thane. Police nab notorious chain snatcher in Kalyan. Thane. Assistant loco pilot risks life to start train stopped by pulling chain on bridge over river near Titwala. Thane ... Looking for Something? ... .