How BRIGHT is your LIGHTING knowledge?

Lux

• indicates the strength of the light emission.

• describes the amount of light that is radiated.

• is short for luminous flux.

• indicates the illumination intensity of an area.

What does the "6" in IP67 protect against?

• solids ie. dust

• powerful jets of water or heavy seas

• temporary immersion (15cm to 1m for 30 mins)

• water

Do filters work for LEDs?

• Yes

• No

What is the average efficiency of LEDs?

• 75%

• 80%

• 90%

• 99%

• 1

What is the biggest advantage(s) of reactive lighting?

• Automatic power adustments

• Automatic battery conservation

• Best lumen to burn time ratio

What does Petzl 50/50 mean?

• 50 hours of burn time to 50 hours of reserve lighting for 900 lumen headlamp

• 50% burn time, 50% reserve lighting

• 50 hours at 50% burn time

• 50% of the rated brightness

  when the battery is 50% full

Is this lighting output graph showing regulated lighting or standard lighting?

• Standard

• Regulated

What is the color temp in Kelvin of direct sunlight?

• 10,000K

• 5,000-6,000K

• 4,800K

• 2,200K

Which light is more powerful - 100 lumen or 100 lux?

• 100 Lux

• 100 Lumen

Watt hours (Wh) are calculated by:

• Volts x Current Amps

• Watts / Amps

• Watts / Volts

• 10 m sq - 100 Lux