Student Question

What is the difference between artificial light and natural light?

Expert Answers

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Natural light is the light generated naturally. The most common source of natural light on Earth is the Sun. We receive natural light throughout our sunlight hours, whether we want it or not. That is, we cannot control the amount, duration and intensity of the natural light. The light we obtain from Sun covers the entire visible spectrum, with violet at one end and red at the other. This light is good for our health and is necessary for plants to carry out photosynthesis. Fire is another source of natural light.

Artificial light is generated by artificial sources, such as incandescent lamps, compact fluorescent lamps (CFLs), LEDs, etc. We can control the quality, quantity and duration of this light by controlling a number of factors. Artificial light is necessary for us to work during hours of low lighting (evening and/or night). The artificial light does not cover the entire light spectrum and is not too conducive to photosynthesis or health of life forms.

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