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Lighting
Lighting
The way in which a room, building or other structure is illuminated. There are certain rules for lighting, but much of it is an art rather than a science. For example, lighting may have to be suitably bright for reading, but that can be provided by a number of different types of lights. The choice is a matter of what the designer wants to do.
Some of the most exciting lighting effects are outside lighting, for example, illuminating ancient buildings or the lighting used in concerts, which is often a mixture of strobe, flashing and rotating lights.
 Lighting – Light is made of waves that can be detected by the eye. They may be sources of light such as the Sun, a candle, or a light bulb (called luminous sources, or transmitted light); or the light may be reflected by other objects.
The arrangement of luminous sources and reflected surfaces determines the lighting in a room.
Sunlight through window
Lamp
Candle
Surfaces reflect light.
 Lighting – Lighting is designed for effect
as well as for function. Here we see two places where the lighting is very different. The top photo shows the Manhattan, New York, skyline. Here
the lighting in the buildings is mainly functional because people live or work in them. To the right is the Sydney Opera House, lit to be an attractive place to visit.
Light ray
(See: Ray.)
Light waves
Light is a form of energy. It is often thought of as a wave of energy. We can only see waves within a certain range. That is called visible light. Waves that are too short to be seen are called infrared light, and those too long to be seen are ultraviolet light.
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