Nox to Phot Conversion

Convert between Nox and Phot quickly and accurately.

From Nox

nox

To Phot

How to Convert Nox to Phot

Conversion Formula

1 nox = 1E-7 ph

1 ph = 10000000 nox

Example

Convert 15 nox to ph:

15 nox = 15 × 1E-7 ph = 0 ph

Unit Information

Learn about the illumination units you're converting between

Nox

nox

Definition

The Nox is a unit of illuminance equal to one-thousandth of a lux, representing very low levels of illumination. It is used for measuring extremely dim light conditions, such as those found in night vision applications, astronomical observations, or specialized scientific measurements.

History/Origin

Developed for measuring very low illumination levels that are below the practical range of the lux. The nox provides a convenient unit for expressing extremely dim light conditions in scientific and technical applications where precision is important.

Current Use

Used in specialized applications requiring measurement of very low light levels, such as night vision technology, astronomical photometry, and scientific research involving extremely dim light sources. It provides a practical scale for quantifying near-threshold illumination conditions.

Multiplier

0.001

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