What is a Phot (ph)?
A phot (ph) is a CGS unit of illuminance equal to 10,000 lux or one lumen per square centimeter.
Definition
Symbol
ph
Category
Illuminance
System
Metric
1 {unit} = {value} {otherUnit}
1 Phot = 10000 Lux (lx)
1 Phot = 929.031 Foot-candle (fc)
Common Uses
- Historical photometry
- High-intensity light measurement
- Scientific literature
