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 Wholehog II. 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) men. Used Wholehog II. tioning a burning-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
Dimmer - Dimmers are devices used to vary the voltage running to a light. By decreasing or increasing the voltage to the lamp it is possible to vary the intensity of the lamp. Changes in intensity are called “. Used Wholehog II. fades” and can be “fade ups” or “fade downs.” Although variable-voltage devices are used for various purposes, the term dimmer is generally associated with lighting control. Small . Used Wholehog II. dimmers are seen more and more in the home. These have traditionally been actuated by direct control. The advent of X-10 technology is making remote control of home dimmers possible. A digital signal is imposed on the ho...
Address - In computer science, a memory address is a unique identifier for a memory location at which a CPU or other device can store a piece of data for later retrieval. In modern byte-addressable computers, e. Used Wholehog II. ach address identifies a single byte of storage; data too large to be stored in a single byte may reside in multiple bytes occupying a sequence of consecutive addresses. Some micro. Used Wholehog II. processors were designed to be word-addressable, so that the typical storage unit was actually larger than a byte. Examples include the Texas Instruments TMS9900 and the National Semiconductor IMP-16, both of which used ...
Tungsten - Tungsten (formerly wolfram) is a chemical element in the periodic table that has the symbol W (L. wolframium) and atomic number 74. A very hard, heavy, steel-gray to white transition metal, tungsten i. Used Wholehog II. s found in several ores including wolframite and scheelite and is remarkable for its robust physical properties. The pure form is used mainly in electrical applications but its man. Used Wholehog II. y compounds and alloys are widely used in many applications (most notably in light bulb filaments and in space-age superalloys).
Pure tungsten is steel-gray to tin-white and is a hard metal. Tungsten can be ...
Moving Lights - Moving lights or intelligent fixtures were originally implemented in 1972, but the first computer-controlled stage lighting fixtures began to gain widespread acceptance in the concert industry in the . Used Wholehog II. early 1980's. As the digital age progressed, the cost of these fixtures was reduced and they slowly started being used in more 'traditional' theatrical environments. Intelligent fi. Used Wholehog II. xtures are currently used in almost all major theatrical productions.
Usually relying on compact arc lamps as a light source, these fixtures generally use stepper motors connected to varying internal devices...