K - Used Product Index

Cameras - A video camera is a camera that takes continuous pictures and generates a signal for display or recording. It captures images by breaking them down into a series of electromagnetic lines.. Used . . Used . ...

Lighting instruments - There are a variety of instruments frequently used in the theater. Although they vary in many ways they all have the following four basic components in one form or another...

* Box/Housin. Used . g - a metal or plastic container to house the whole instrument and prevent light from spilling in un-wanted directions.
* Source of light (bulb or lamp).
* Lens or opening - the g. Used . ap in the housing where the light is intended to come out.
* Reflector - behind or around the light source in such a way as to direct more light towards the lense or opening.

Additional feat...

Lens - A lens is a device for either concentrating or diverging light, usually formed from a piece of shaped glass. Analogous devices used with other types of electromagnetic radiation are also called lense. Used . s: for instance, a microwave lens can be made from paraffin wax.

The earliest records of lenses date to Ancient Greece, with Aristophanes' play The Clouds (424 BC) mentioning a b. Used . urning-glass (a convex lens used to focus the sun's rays to produce fire). The writings of Pliny the Elder (23-79) also show that burning-glasses were known to the Roman Empire, and mentions what is possibly t

Conventional Lighting - Conventional lighting is made up of stationary lights that can be moved, but only via manual means of adjusting, or focusing the fixture with a yoke.. Used . . Used . ...

Protocol - In computing, a protocol is a convention or standard that controls or enables the connection, communication, and data transfer between two computing endpoints. In its simplest form, a protocol can be . Used . defined as the rules governing the syntax, semantics, and synchronization of communication. Protocols may be implemented by hardware, software, or a combination of the two. At the lowest leve. Used . l, a protocol defines the behavior of a hardware connection.

Protocols should be distinguished from technical standards, which variously specify how to build a computer or related hardware device,...