What is the centimeter-candle unit?

The centimeter-candle is an old illuminance unit indicating light at one centimeter from a point source of one candle, roughly equal to 10,000 lux assuming one candela.

Why convert to watt/sq. cm at 555 nm?

This radiometric unit measures monochromatic irradiance at the 555 nm wavelength, which corresponds to peak photopic sensitivity, important for precise lighting calibration and vision science.

Can I use this conversion for other wavelengths?

No, this conversion specifically applies to the 555 nm wavelength, and accuracy may decrease for other spectral regions.

How to Convert from Centimeter-candle [cm*c] to Watt/sq. cm (at 555 nm)?

Learn how to convert illumination units from the obsolete centimeter-candle to watt per square centimeter at 555 nm wavelength. This guide explains the conversion formula, use cases, and practical steps for accurate light measurement translation.

Centimeter-candle [cm*c]

Watt/sq. cm (at 555 nm)

Please check your input. It must be a valid numeric value.

Centimeter-candle [cm*c] to Watt/sq. cm (at 555 nm) Conversion Table

Centimeter-candle [cm*c]	Watt/sq. cm (at 555 nm)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Centimeter-candle [cm*c] to Watt/sq. cm (at 555 nm) Conversion Table
Centimeter-candle [cm*c]	Watt/sq. cm (at 555 nm)

Explore More Illumination Units Converter

What Is This Tool?

This unit converter transforms illumination values from the historical unit centimeter-candle [cm*c] to the radiometric unit watt per square centimeter (at 555 nm). It helps translate older lighting data into modern measurement standards used in calibration, photometry, and vision science.

How to Use This Tool?

Enter the illumination value in centimeter-candle units.
Select the target unit: watt per square centimeter at 555 nm.
Click convert to get the corresponding value in the new unit.
Review the output, which applies the fixed conversion factor.
Use the result for calibration, comparison, or further analysis.

Key Features

Converts obsolete centimeter-candle illuminance values into radiometric units at 555 nm.
Applies a precise conversion rate for accurate unit translation.
Supports use cases in lighting calibration, photobiological safety, and vision research.
Provides example conversions for quick reference.
Browser-based and easy to use without additional setup.

Examples

10 centimeter-candle [cm*c] equals 0.014641288 watt/sq. cm (at 555 nm) using the conversion factor.
100 centimeter-candle [cm*c] converts to 0.14641288 watt/sq. cm (at 555 nm).

Common Use Cases

Translating historical photometric data into current radiometric standards.
Calibrating light sources and photometric instruments in industry labs.
Analyzing monochromatic green light exposure in vision science experiments.
Ensuring safety limits for optical devices operating at 555 nm.
Reconciling older lighting specifications with modern measurements.

Tips & Best Practices

Always verify the definition of 'candle' used in original data for consistent conversion.
Use the tool specifically for measurements related to the 555 nm wavelength.
Consider instrument calibration and luminous efficacy assumptions when interpreting results.
Apply the conversion when working with legacy datasets or historical lighting reports.

Limitations

The centimeter-candle is an outdated unit and definitions may vary historically.
The watt/sq. cm unit applies strictly at the 555 nm wavelength only.
Conversion accuracy depends on spectral conformity and assumptions about luminous efficacy.
Precision conversions may require additional calibration beyond this basic formula.

Frequently Asked Questions

What is the centimeter-candle unit?: The centimeter-candle is an old illuminance unit indicating light at one centimeter from a point source of one candle, roughly equal to 10,000 lux assuming one candela.
Why convert to watt/sq. cm at 555 nm?: This radiometric unit measures monochromatic irradiance at the 555 nm wavelength, which corresponds to peak photopic sensitivity, important for precise lighting calibration and vision science.
Can I use this conversion for other wavelengths?: No, this conversion specifically applies to the 555 nm wavelength, and accuracy may decrease for other spectral regions.

Key Terminology

Centimeter-candle [cm*c]: An obsolete unit of illuminance representing the light on a surface one centimetre from a point source of one candle, formerly used before SI lux units.
Watt/sq. cm (at 555 nm): A radiometric unit measuring radiant power per square centimeter at the 555 nm wavelength, corresponding to peak photopic sensitivity.
Photopic luminous-efficiency function: A function describing the eye's sensitivity to light at different wavelengths during day vision, peaking at 555 nm.

Quick Knowledge Check

What does the centimeter-candle measure?

Radiant power per unit area

Illuminance near a point light source

Spectral irradiance at 555 nm

At what wavelength is watt/sq. cm measured in this conversion?

530 nm

555 nm

600 nm

Why is converting centimeter-candle to watt/sq. cm useful?

To convert radiant power to illuminance

To update obsolete illumination data for modern use

To measure temperature of a light source

Share Us

Similar Calculators

Online Power Units Converter Online Fuel Consumption Units Converter Online Typography Units Converter Online Speed Units Converter Online Radiation Exposure Units Converter