Flame to Phot Conversion

Convert between Flame and Phot quickly and accurately.

From Flame

flame

To Phot

How to Convert Flame to Phot

Conversion Formula

1 flame = 0.004 ph

1 ph = 232.258 flame

Example

Convert 15 flame to ph:

15 flame = 15 × 0.004 ph = 0.065 ph

Unit Information

Learn about the illumination units you're converting between

Flame

flame

Definition

The Flame is a unit of illuminance equal to approximately 43.06 lux, representing the illuminance produced by a standard flame at a specific distance. It was used as a practical reference for measuring illumination levels in various lighting applications and historical photometric measurements.

History/Origin

Developed as a practical unit for measuring illumination based on the light output of a standard flame. It provided a convenient reference for lighting levels in everyday applications before the widespread adoption of standardized photometric units.

Current Use

Primarily of historical interest, though may still be referenced in older lighting literature or specialized applications. It provides insight into the evolution of illumination measurement and the practical approaches used in early photometry.

Multiplier

43.056

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