Phot
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Phot Unit Table
A list of units symbol and data.
From phTo lmAll conversion
1 ph10000 lm
2 ph20000 lm
3 ph30000 lm
4 ph40000 lm
5 ph50000 lm
6 ph60000 lm
7 ph70000 lm
8 ph80000 lm
9 ph90000 lm
10 ph100000 lm
Description

Phot (ph): CGS Unit of Illuminance

The phot is a unit of illuminance in the centimeter-gram-second (CGS) system, where one phot equals 10,000 lux. Although it is not commonly used in modern applications, the phot provides a historical reference point for high-intensity lighting measurements, particularly in scientific research and specialized fields.

While the SI unit lux has largely supplanted the phot, familiarity with this unit can be beneficial when interpreting older scientific literature or working within specific contexts where CGS units are still in use. Recognizing the conversion between phot and lux ensures accurate understanding and communication of illuminance values.

Lumen (lm): Measuring Luminous Flux

The lumen is the SI unit of luminous flux, quantifying the total amount of visible light emitted by a source per unit of time. One lumen is defined as the luminous flux emitted within a unit solid angle (one steradian) by a point source with a uniform luminous intensity of one candela. This unit is crucial for evaluating the overall brightness of light sources, such as bulbs and LEDs.

In practical terms, lumens provide a direct measure of a light source's output, enabling consumers and professionals to assess and compare the brightness of different lighting products. Higher lumen values indicate greater light output, which is essential for applications requiring specific illumination levels, from residential lighting to commercial and industrial settings.

Complete list of conversion for Phot
Phot (ph)

1 Phot = 10000 Candela

Convert 2 phcd

1 Phot = 10000 Candlepower

Convert 2 phcp

1 Phot = 10000 Lumen

Convert 2 phlm

1 Phot = 10000 Lux

Convert 2 phlx

1 Phot = 929.0312990644655 Footcandle

Convert 2 phfc

1 Phot = 10000 Candela per square meter

Convert 2 phcd/m²

1 Phot = 10000 Nit

Convert 2 phnt

1 Phot = 1 Stilb

Convert 2 phsb

1 Phot = 3.141592653587727 Lambert

Convert 2 phL

1 Phot = 2918.635079290997 Footlambert

Convert 2 phfL

1 Phot = 10000 Lumen second

Convert 2 phlm·s

1 Phot = 10000 Lux second

Convert 2 phlx·s

1 Phot = 10000 Rayleigh

Convert 2 phR