valonmäärään

Valonmäärään is the illative case form of the Finnish noun valonmäärä, referring to the amount of light. It expresses direction toward or into a certain level of illumination and is used mainly in Finnish linguistic discussion and in technical texts about lighting. In everyday language, the two-word form valon määrä is more common, but the illative form can appear when the grammatical case requires it.

Valonmäärä is a compound built from valo, meaning light, and määrä, meaning amount. In ordinary usage it is often written as valon määrä; the illative form of the two-word compound is valon määrään. Alternatively, the concept can be written as a single compound valonmäärä, whose illative is valonmäärään. Both spellings are understood, with choice depending on typographic style and formality.

Usage of valonmäärään occurs mainly in contexts involving lighting design, standards, or linguistic analysis of Finnish case forms. In practical or everyday discussion about lighting, speakers typically refer to valon määrä rather than to specific illative forms, unless a sentence explicitly requires a directional or threshold sense expressed by the illative.

Notes on physics and measurement: precise quantities in illumination are described with units such as lumen (valon virta) and lux (valonvoimiksen illuminance), rather than with the generic phrase valon määrä. Thus valonmäärään functions as a grammatical construct rather than a technical SI quantity; it marks direction toward a level of light within a sentence rather than a specific measured value.

Examples: Tutkimuksessa käsiteltiin valonmäärään liittyviä standardeja. Järjestelmä säätelee valaistuksen valonmäärään perustuen.