Tools

Lighting

Given the FOOTCANDLES at a distance (p.1), how to calculate the CANDLES and the FOOTCANDLES value at a different distance (p.2)

METRIC SYSTEM

IMPERIAL SYSTEM

Given the CANDLES, how to calculate the FOOTCANDLES at a certain distance

METRIC SYSTEM

IMPERIAL SYSTEM

Conversion of a distance measurement between the metric and the imperial system

Conversion of an illumination measurement between the metric and the imperial system

Geometric

Given the angle of the light beam, how to calculate the diameter and the lit surface at a certain distance

Given diameter of the light projection at a certain distance, how to calculate the beam angle and what is the resulting lit surface

Electrical

Single phase resistive load

how to calculate the Current in use

how to calculate the absorbed Power

Single phase inductive load

given the Cos(phi) power factor, how to calculate the Current in use

given the Cos(phi) power Factor, how to calculate the absorbed Power