Radiometricky

Radiometricky is an adverb derived from radiometry, the branch of science that concerns the measurement of electromagnetic radiation. In English contexts one would say radiometrically. Radiometry focuses on absolute power quantities such as radiant flux, irradiance, radiance, and radiant intensity. These radiometric quantities are expressed in SI units such as watts (W) for power, watts per square meter (W/m^2) for irradiance, watts per steradian (W/sr) for radiant intensity, and watts per square meter per steradian (W/(m^2 sr)) for radiance.

Radiometry is distinct from photometry. Photometric quantities are weighted by the human eye's response and use units like lumen, lux, and candela. Radiometric measurements are objective with respect to the physical energy, whereas photometric measurements relate to perceived brightness.

Key radiometric quantities include: radiant flux Φ (W), irradiance E (W/m^2), radiance L (W/(m^2 sr)), and spectral variants such as Eλ and Lλ. Spectral radiometry measures distribution of energy across wavelengths, which is essential in remote sensing, astronomy, and material analysis.

Instruments used for radiometric measurements include radiometers, spectroradiometers, and integrating spheres. Accurate radiometric data require calibration against standards, such as blackbody radiators or calibrated lamps, and corrections for detector spectral response, temperature effects, and stray light. In remote sensing and astronomy, radiometric calibration converts raw sensor counts into physically meaningful units, enabling comparisons across instruments and times.

The term radiometricky (radiometrically) is used in Czech and Slovak technical language to describe methods, results, or analyses conducted within radiometry. Related concepts include radiometric calibration, radiometric resolution, and spectral radiance.