Evolution of Lighting Quiz

What was the first light source used by early humans?

• Gas lighting

• Fluorescent tube

• Oil lamps

• Fire

In which century did the development of oil lamps and candles take place?

• 1st century AD

• 5th century BC

• 3rd century AD

• 2nd century BC

What was the primary material used in the carbon electrodes of the ark lights?

• Copper

• Silver

• Carbon

• Aluminum

Who was one of the inventors working on the filament for the light bulb?

• All of the above

• Sir Joseph Swan

• Sir Haram Maxim

• Thomas Edison

What process allows some materials to emit visible light when exposed to UV light?

• Incandescence

• Fluorescence

• Halogenation

• Phosphorescence

What was the primary reason for the development of halogen lights?

• Energy efficiency

• Color rendering accuracy

• All of the above

• Longer light source lifespan

What type of light is commonly used for street lighting and industrial use?

• Mercury vapor light

• Compact fluorescent light

• Low pressure sodium light

• Metal halide light

What was the primary reason for the development of compact fluorescent lights?

• Color rendering accuracy

• All of the above

• Energy efficiency

• Longer lifespan

What was the primary use of LEDs in the 1990s?

• Industrial lighting

• Home lighting

• Indicator lights in electrical circuits

• Street lighting

What is the efficiency of LED lights compared to incandescent lights?

• 10 times more efficient

• 20 times more efficient

• 40 times more efficient

• 30 times more efficient