Light+Vocabulary

**Accent Lighting:** Directional lighting to emphasize a particular object or draw attention to a display item.
**Hardwired:** Means that the light fixture is permanently connected to an electrical source. The light fixture is not hardwired if it gets power via a cord & plug.

**Arc:** Intense luminous discharge formed by the passage of electric current in a gaseous medium across a space between electrodes.

**Bulb:** A loose way of referring to a lamp. "Bulb" refers to the outer glass bulb containing the light source.

**Glare:** Visual discomfort caused by excessive brightness is called discomfort glare. If task performance is affected it is called disability glare.

**Chandelier:** Is often the focal point of the dining room. As such it should be hung about 30 inches above the tabletop and should be at least 6 inches narrower than the table on each side.

**Daylight Harvesting:** Lighting design for building interiors that makes of daylight as a way of reducing energy consumption.

**Bayonet Base**: Is a type of lamp base with pins that serve to lock the lamp into slots in the lamp socket of a luminaire. The bayonet base got its name from the method used by soldiers to mount bayonets on their rifles.

**Electrical Discharge:** A condition under which a gas becomes electrically conducting and becomes capable of transmitting current, usually accompanied by the emission of visible and other radiation. An electric spark in air is an example of an electrical discharge, as is a welder's arc and a lightning bolt.

**Wall Washing:** Is a lighting technique that produces a relatively smooth, even level of illumination on a wall that minimizes the apparent texture of the surface.