Lighting - Research Article from Macmillan Encyclopedia of Energy

This encyclopedia article consists of approximately 19 pages of information about Lighting.
This section contains 5,586 words
(approx. 19 pages at 300 words per page)
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Lighting

Light is essential for human life. Modern societies have created homes, schools, and workplaces that rely on electric light sources. Some of the electricity used to generate the light in these spaces is wasted, largely owing to ignorance. The efficient application of electric, as well as natural, light sources to the human condition is a sophisticated effort, but one that is essential to a sustainable and enjoyable future.

What Is Light?

Humans are a diurnal species, which means that we are active in the day and asleep at night. Indeed, daylight is the primary stimulus to the photobiological system that regulates our sleep-awake cycle. Of course, while we are awake, we see, and we depend a great deal on seeing. Approximately 80 percent of the human brain devoted to sensing the environment is devoted to vision. It is not surprising, then, that from the beginning of human history we...

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This section contains 5,586 words
(approx. 19 pages at 300 words per page)
Buy the Lighting Encyclopedia Article
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Macmillan Encyclopedia of Energy
Lighting from Macmillan Encyclopedia of Energy. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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