Typical Illumination Measurements

                    

Outdoor Illumination

Light in Footcandles

Direct Sunlight

10,000 - 13,000 fc

Full Daylight

1,000 - 2,000 fc

Overcast Day

100 fc

Twilight

1 fc

Deep Twilight

0.1 fc

Full Moon

0.01 fc

Moonless Night

0.0001 fc

Overcast Night

0.000001 fc

Indoor  Illumination

Light in Footcandles

Assembly Line

20 fc

General Work Area

30 fc

Fine Assembly Work

100 fc

Retail Store

50 fc

Accounting Work

50 fc

Bank Lobby

20 fc

Offices

50 fc

Operating Table

1,800 fc

To convert to lux multiply footcandles by 10.764




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