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Foot-candles measure incident light
Course:- Other Subject
Reference No.:- EM13298457




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Ture or False.

1. Lumen refers to the quantity of light that is given off in all directions by the lamp itself.

2. Lumens are never compared to watts.

3. Cndlepower describes the amount of light given off in a particular direction.

4. Candela is the measurement applied to the light issuing from a lighting fixture.

5. The light falling on a target is called incident light.

6. Foot-candles measure incident light.

7. Light that is reflected from an object is measured in footlamberts.

8. Extreme contrasts in brightness can cause temporary eyestrain.

9. Contrasts in brightness are not essential to the process of seeing

10. When contrast in brightness is so great that is causes loss in visual performance, it is called glare.




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