Knowing about certain electrical and lighting terms will help you in gaining knowledge about typical terms used. You can easily learn basics of these terms and help yourself when required. Here is a glossary of 4 most common terms used in the electrical and lighting field.

Ampere (AMP): This is a standard unit for measurement for electric current. This is equal to 1 coulomb per second. It actually defines the electrons quantity that moves past a given point inside a circuit in a specific time period. Amp is abbreviation for ampere.

Ballast: It is a device utilized to run HID and fluorescent lamps. It also provides the requisite starting voltage. It restricts and regulates the current of lamp during operation.

Candle Power: It is a measure for luminous intensity for a source of light in a particular direction. This is measured in candelas.
Diffuse: This term is used to describe distribution of dispersed light. It also refers to the softening or scattering of light.