What is the difference between the brightness and intensity of light?
Intensity is the power per unit area; it is a physical quantity. Brightness involves how the human visual system perceives light, and it is not a physical quantity.So technically speaking brightness depends on both voltage and current. An increase in either voltage or current will increase the brightness of a bulb. In incandescent bulbs, this is the case.
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ANSWER :
Intensity is the power per unit area; it is a physical quantity. Brightness involves how the human visual system perceives light, and it is not a physical quantity.So technically speaking brightness depends on both voltage and current. An increase in either voltage or current will increase the brightness of a bulb. In incandescent bulbs, this is the case.
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