phot to watt/sq. cm (at 555 nm)
Please provide values below to convert phot [ph] to watt/sq. cm (at 555 nm), or change ↔.
phot [ph]
Definition: A unit of illuminance that measures the amount of light falling on one square centimeter of a surface, equal to one lumen per square centimeter.
Historyandorigin: The phot was introduced in the early 20th century and was used to measure illuminance, especially in scientific studies.
CurrentUse: It has mostly been replaced by the lux and is no longer widely used, except in some specialized contexts.
funfact: The phot is still occasionally used in older scientific research but has been largely superseded by the SI unit, lux.
watt/sq. cm (at 555 nm)
Definition: A unit of radiometric power, measuring the amount of radiant power (in watts) per square centimeter at a wavelength of 555 nm, which corresponds to the peak sensitivity of the human eye.
Historyandorigin: This unit is used in photometry to understand the power of light sources that emit light at wavelengths that the human eye is most sensitive to.
CurrentUse: It is used in scientific applications where precise measurement of light intensity at 555 nm is required, such as in the study of vision and optical systems.
funfact: The 555 nm wavelength is in the green part of the spectrum and is the most efficient wavelength for human vision, which is why this unit is used to measure visual brightness.
phot [ph] to watt/sq. cm (at 555 nm) Conversion Table
| 1 phot [ph] | 0.0014641288 watt/sq. cm (at 555 nm) |
| 2 phot [ph] | 0.0029282577 watt/sq. cm (at 555 nm) |
| 3 phot [ph] | 0.0043923865 watt/sq. cm (at 555 nm) |
| 5 phot [ph] | 0.0073206442 watt/sq. cm (at 555 nm) |
| 10 phot [ph] | 0.0146412884 watt/sq. cm (at 555 nm) |
| 50 phot [ph] | 0.0732064422 watt/sq. cm (at 555 nm) |
| 100 phot [ph] | 0.1464128843 watt/sq. cm (at 555 nm) |
| 1000 phot [ph] | 1.4641288433 watt/sq. cm (at 555 nm) |
| 10000 phot [ph] | 14.641288433 watt/sq. cm (at 555 nm) |
| 100000 phot [ph] | 146.41288433 watt/sq. cm (at 555 nm) |
| 1000000 phot [ph] | 1464.1288433 watt/sq. cm (at 555 nm) |
How to Convert phot to watt/sq. cm (at 555 nm)
1 phot [ph] = 0.0014641288 watt/sq. cm (at 555 nm)
1 watt/sq. cm (at 555 nm) = 683 phot [ph]
we use cross multiplication method
phot [ph] → watt/sq. cm (at 555 nm)
1 → 0.0014641288
1.5 → ?( suppose x)
=>1.5*0.0014641288=1*x
by simplifying
x=0.0021961933