L

laser lighting display (laser light show) :

Involves the use of laser light to entertain an audience. A laser light show may consist only of projected laser beams set to music, or may accompany another form of entertainment, typically a rock concert or other musical performance. Laser light is useful in entertainment because the coherent nature of laser light causes a narrow beam to be produced, which allows the use of optical scanning to draw patterns or images on walls, ceilings or other surfaces.

Layout:

The physical arrangement of the various parts of an advertisement including the headline, subheads, illustrations, body copy, and any identifying marks.

Liquid crystal display :

An electro-optical amplitude modulator realized as a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. It is often utilized in battery-powered electronic devices because it uses very small amounts of electric power.

Local Advertising:

Advertising done by companies within the limited geographic area where they do business.

Low-Power Television (LPTV):

A TV station that broadcasts with lower power than the normal broadcast station and that has a coverage area of twelve to fifteen miles in radius.

Lead (pronounced leed):

The main story on a page; the page lead.