Light and Luminaires

Front

Light impulses are transferred from the eye to the brain by the optic nerve.

Back

The optic nerve carries visual information from the retina to the brain.

Front

Light first enters the eye through the cornea.

Back

The cornea is the transparent front part of the eye.

Front

Dark red bricks absorb the most light.

Back

Dark colors tend to absorb more light than lighter colors.

Front

When all wavelengths of light are presented in nearly equal proportions, the color is white.

Back

White light is a combination of all colors of light.

Front

Metal halide lamps are subject to explosion if the arc tube ruptures.

Back

Safety precautions are necessary when using metal halide lamps.

Front

A color temperature of 4100K and higher is cool with a bias toward blues and greens.

Back

Cool color temperatures are often used in commercial lighting.

Front

Metal halide lamps have excellent color rendition.

Back

They are preferred for applications requiring accurate color representation.

Front

Recessed luminaires with wrong wattage lamps may circle on and off.

Back

Using the correct wattage is crucial for proper luminaire function.

Front

The LED component controlling voltage or current is called the driver.

Back

The driver ensures the LED operates efficiently.

Front

Electronic programmed-start ballasts have high efficiency and excellent lamp life.

Back

They are commonly used in fluorescent lighting.