Related Words

Ceiling Light: An instrument consisting of a drum and an optical system that projects a narrow vertical beam of light onto a cloud base.

Measured Ceiling: A ceiling classification applied when the ceiling value has been determined by an instrument, such as a ceilometer or ceiling light, or by the known heights of unobscured portions of objects . . . View Full Definition

Lighting: The placement, type, direction, and brightness or dimness of lights used on stage. Often lighting can establish mood, highlight specific characters, actions, or scenes, or serve symbolic purposes.

Lighting Color: Light may be 'colored' by placing a filter or gelatin in front of a light source.

Lighting Diffusion: The hardness or softness of a light source. Hard light casts a sharp, definite shadow.

Lightfastness: No loss of color due to exposure to light, heat or weathering.

Lightfast: A pigments resistance to fading on long exposure to sunlight. Watercolors are rated lightfast on a scale of I-IV. I and II ratings are the most permanent.

Lightbox: Box of fluorescent tubes balanced for white light and covered with translucent glass or plastic. Used for viewing, registering or correcting film negatives and positives.

Lighten Up: Selling some part of a stock or bond position in a portfolio to realize capital gains or to losses or increase cash assets.

Lighter-Than-Air Craft (LTAC): Generally referring to powered blimps and dirigibles, but often also includes free balloons.