Science Fair Project Encyclopedia

Connection

(Redirected from Connected)

The term connection (also rendered connexion) has various uses, including:

An act of connecting two or more physical entities in a physical sense or connecting concepts in memory or imagination, see below
- Telecommunications circuit switching
That which connects, relates or joins:
- An electrical connection
- A telecommunication circuit such as a fiber-optic connection
- LAN, PAN, MAN, WAN and other types of synchronous or asynchronous connections between computers using OSI or other protocols
- The property of a device enabling it to be connected may be referred to as its connectivity.
- A method of interaction between dance partners, see connection (dance).
- A method for organizing prayer groups, see connexion.

That to which an entity is connected, such as
- A business or political connection
- A means of transport used for a second or subsequent part of a journey
- A supplier of illegal drugs

In mathematics
- A topological property of certain mathematical objects, better called connectedness: see connected space, connected graph.
- A fundamental structure in differential geometry allowing the use of parallel transport on manifolds: see connection (mathematics)
- The existence of one or more morphism between two or more objects in category theory. See connected (category theory).

Methods of connecting/fastening include:

anchor (combination of hooking and gravity)
adhesion, adhesive
belt
buckle
button
carabiner
chain
clasping
electrostatic force
friction (see interference fit)
glue
gravity (instead of calling this a way of fastening one can also say: there is no need to fasten, it will stay in place due to its weight)
hook, e.g. with eye
magnet
nail
rope, cable, lace (including shoelace), etc. with e.g. a knot
screw, nut and bolt
sewing
stapling
Velcro
welding
zipper