Reef knotThe reef knot, or square knot, is an ancient and simple binding knot used to secure a rope or line around an object. It is sometimes also referred to as a Hercules knot or Heracles knot. The knot is formed by tying a left-handed overhand knot between two ends, instead of around one end, and then a right-handed overhand knot via the same procedure, or vice versa.
BowlineThe bowline () is an ancient and simple knot used to form a fixed loop at the end of a rope. It has the virtues of being both easy to tie and untie; most notably, it is easy to untie after being subjected to a load. The bowline is sometimes referred to as king of the knots because of its importance. Along with the sheet bend and the clove hitch, the bowline is often considered one of the most essential knots.
Figure-eight knotThe figure-eight knot or figure-of-eight knot is a type of stopper knot. It is very important in sailing, rock climbing and caving as a method of stopping ropes from running out of retaining devices. Like the overhand knot, which will jam under strain, often requiring the rope to be cut, the figure-eight will also jam, but is usually more easily undone than the overhand knot. The figure-eight or figure-of-eight knot is also called (in books) the Flemish knot.
Stopper knotA stopper knot (or simply stopper) is a knot that creates a fixed thicker point on an otherwise-uniform thickness rope for the purpose of preventing the rope, at that point, from slipping through a narrow passage, such as a hole in a block. To pass a rope through a block, or hole, is to reeve it. To pull it out is to unreeve it. Stopper knots prevent the rope from unreeving on its own. They are also used to lower the chances of rappelling off the end of a rope.
Rope splicingRope splicing in ropework is the forming of a semi-permanent joint between two ropes or two parts of the same rope by partly untwisting and then interweaving their strands. Splices can be used to form a stopper at the end of a line, to form a loop or an eye in a rope, or for joining two ropes together. Splices are preferred to knotted rope, since while a knot typically reduces the strength by 20–40%, a splice is capable of attaining a rope's full strength.Knot theoryIn topology, knot theory is the study of mathematical knots. While inspired by knots which appear in daily life, such as those in shoelaces and rope, a mathematical knot differs in that the ends are joined so it cannot be undone, the simplest knot being a ring (or "unknot"). In mathematical language, a knot is an embedding of a circle in 3-dimensional Euclidean space, E3{\displaystyle \mathbb {E} ^{3}}.
Tang dynastyImperial dynasty of China (618–907)CapitalChang'an(618–690, 705–904)Luoyang(904–907)Common languagesMiddle ChineseLiterary Chinese (official)Religion Majorities:Chinese BuddhismTaoismChinese folk religionMinorities:Nestorian ChristianityChinese ManichaeismZoroastrianismIslamGovernmentAbsolute monarchyEmperor • 618–626 (first) Emperor Gaozu• 626–649 Emperor Taizong• 712–756 Emperor Xuanzong• 904–907 (last) Emperor AiHistorical eraMedieval East Asia• EstablishedJune 18, 618• W…
List of knot terminologyThis page explains commonly used terms related to knots. Contents: ABCDEFGHIJKLMNOPQRSTUVWXYZBBendA bend is a knot used to join two lengths of rope. BightA bight is a slack part in the middle of a rope, usually a curve or loop. Knots that can be tied without access to either end of the rope are called knots in the bight. To tie a knot with a bight is to double up the rope into a bight and then tie the knot using the double rope.
RopeA rope is a group of yarns, plies, fibres, or strands that are twisted or braided together into a larger and stronger form. Ropes have high tensile strength and can be used for dragging and lifting. Rope is thicker and stronger than similarly constructed cord, string, and twine. ConstructionRope may be constructed of any long, fibrous material (e.g., rattan, a natural material), but generally is constructed of certain natural or synthetic fibres.
TopologyTopology (from the Greek words , 'place, location', and λόγος, 'study') is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuousdeformations, such as stretching, twisting, crumpling, and bending; that is, without closing holes, opening holes, tearing, gluing, or passing through itself.Hitch (knot)A hitch is a type of knot used to secure a rope to an object or another rope. Hitches are used in a variety of situations, including climbing, sailing, and securing loads. They are classified based on their ability to be tightened or released, their resistance to slipping, and their strength. Some common types of hitch knots include the clove hitch, the timber hitch, and the round turn and two half-hitches.
Bend (knot)A bend is a type of knot used to unite two lengths of rope, or two parts of the same rope. Bends are used in a variety of situations, including climbing, sailing, and securing loads. They are classified based on their ability to be tightened or released, their resistance to slipping, and their strength. Some common types include the sheet bend, the double fisherman's knot, and the double figure-eight bend. Bends allow the combined ropes to support weight or transmit force.*As an Amazon Associate I earn from qualifying purchases.