Pinning may refer to: * Pinning, the effect of certain weapons that cause their targets to be

pinned down In military science, suppressive fire is "fire that degrades the performance of an enemy force below the level needed to fulfill its mission". When used to protect exposed friendly troops advancing on the battlefield, it is commonly called cove ...

Pinning ceremony (nursing) A pinning ceremony is a symbolic welcoming of newly graduated or soon-to-be graduated nurses into the nursing profession. The history of the ceremony dates back to the Crusades in the 12th century, and later, when Queen Victoria awarded Florence ...

, a symbolic welcoming of new graduates into the nursing profession *

Pinning force Pinning force is a force acting on a pinned object from a pinning center. In solid state physics, this most often refers to the vortex pinning, the pinning of the magnetic vortices ( magnetic flux quanta, Abrikosov vortices) by different kinds of t ...

, a force acting on a pinned object from a pinning center *

Pinning (modelling) Pinning is a technique used when assembling large or heavy model kits (such as metal wargaming miniatures) that involves drilling a hole in two pieces of the model to be joined, and using a "pin" to strengthen the bond when they are glued. Pinnin ...

, the use of pins to strengthen the joins when assembling large or heavy model kits *

Pinning points In a crystalline material, a dislocation is capable of traveling throughout the lattice when relatively small stresses are applied. This movement of dislocations results in the material plastically deforming. Pinning points in the material act ...

, points in a crystalline material that act to halt a dislocation's movement *

Pinning hold A grappling hold, commonly referred to simply as a hold that in Japanese is referred to as ''katame-waza'' ( "grappling technique"), is any specific grappling, wrestling, judo, or other martial art grip that is applied to an opponent. Grapplin ...

, a hold used to control an opponent in grappling *

Flux pinning Flux pinning is a phenomenon that occurs when flux vortices in a type-II superconductor are prevented from moving within the bulk of the superconductor, so that the magnetic field lines are "pinned" to those locations. The superconductor must be a ...

, a phenomenon that magnetic flux lines do not move despite the Lorentz force acting on them inside a current-carrying Type II superconductor *

Percutaneous pinning Percutaneous pinning is a technique used by orthopedic and podiatric surgeons for the stabilization of unstable fractures. Percutaneous pinning involves inserting wires through a person's skin for stabilizing the fractured bone. Uses Many fractu ...

, a technique used by orthopedic surgeons for the stabilisation of unstable fractures *

Tree pinning Tree spiking involves hammering a metal rod, nail or other material into a tree trunk, either inserting it at the base of the trunk where a logger might be expected to cut into the tree, or higher up where it would affect the sawmill later proces ...

, inserting spikes into trees in order to cause damage to sawmill equipment *

Zener pinning Zener pinning is the influence of a dispersion of fine particles on the movement of low- and high-angle grain boundaries through a polycrystalline material. Small particles act to prevent the motion of such boundaries by exerting a pinning pressure ...

, the influence of a dispersion of fine particles on the movement of low- and high angle grain boundaries through a polycrystalline material *

HTTP Public Key Pinning HTTP Public Key Pinning (HPKP) is an obsolete Internet security mechanism delivered via an HTTP header which allows HTTPS websites to resist impersonation by attackers using misissued or otherwise fraudulent digital certificates. A server uses it ...

, a security mechanism for HTTPS websites

See also