Meter-Candle to Phot Conversion

Convert between Meter-Candle and Phot quickly and accurately.

From Meter-Candle

m*c

To Phot

How to Convert Meter-Candle to Phot

Conversion Formula

1 m*c = 0 ph

1 ph = 10000 m*c

Example

Convert 15 m*c to ph:

15 m*c = 15 × 0 ph = 0.002 ph

Unit Information

Learn about the illumination units you're converting between

Meter-Candle

m*c

Definition

The Meter-Candle is a unit of illuminance that is numerically equivalent to the lux. It represents the illuminance produced by a standard candle at a distance of one meter, providing a historical reference for light measurement that predates the modern SI system.

History/Origin

Developed as part of early photometric systems where illumination was measured in terms of candle power at specific distances. The meter-candle was used before the adoption of the lux as the standard SI unit, providing a practical way to relate illumination to familiar light sources.

Current Use

Primarily of historical interest, though may still be encountered in older technical specifications or educational contexts. It provides a direct relationship between illumination and the traditional candle standard, helping to understand the evolution of light measurement.

Multiplier

Offset

Phot

Definition

The Phot is a CGS unit of illuminance equal to 10,000 lux, representing one lumen per square centimeter. It is a larger unit used for measuring very high levels of illumination, particularly in scientific and technical applications where high light intensities are common.

History/Origin

Developed as part of the CGS system of units, where the phot provided a convenient way to express high illumination values. It was widely used in scientific literature and technical applications before the adoption of SI units became standard practice.

Current Use

Primarily found in older scientific literature and specialized technical applications. It provides a practical scale for measuring very bright light sources and is still occasionally referenced in photometric research and historical technical documents.

Multiplier

10000

Offset