What is a UV Filter?

A UV filter is a substance that prevents ultraviolet (UV) light from passing through. In sunscreens, these chemicals and particles are combined in a lotion or spray to block harmful … Read More

What is Cable Digital TV?

Cable digital TV is a method of broadcasting television to a viewer’s home through an entirely physical connection. Its benefits include more channels and better picture quality. Unlike analog TV, … Read More

What Is a Voicemail Auto Attendant?

Taking telephone calls is often time consuming for businesses, and it is generally difficult to have someone available at all times to answer a phone. Getting calls to the right … Read More

What are Transcription Machines?

Transcription machines are specially designed voice recording and word processing units that allow information managers to transfer spoken word to written text. These machines, also commonly referred to as transcribers … Read More

What is a Surface Mount Capacitor?

Capacitors are common components in electronic circuits. They block the effects of direct current but allow the effects of alternating current, thus giving them many uses, such as filtering noise … Read More

What Is an Autocollimator?

An autocollimator is a device used to measure small angles with extreme precision. There are a number of applications for this type of equipment, especially in the sciences, where exact … Read More

What Is 3-Way Video Conferencing?

3-way video conferencing allows people in three different locations to communicate with each other in real time. This type of conferencing specifically refers to video conferencing that is conducted from … Read More

What Is Holographic Grating?

A holographic grating is a pattern formed on a film by lasers used to diffract light, or separate light into its various wavelengths. Diffraction products are used in spectroscopy and … Read More