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luminance contrast of a visibility reference task having equal visibility at the same luminance level as that of the task considered, nähtavuse võrdlusülesande heleduse kontrast, millel on võrdne nähtavus vaadeldava ülesandega samal heleduse tasemel
ekvivalentne kontrast . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/ekvivalentne%20kontrast/1/est (03.07.2026)
