illuminance

• Научный термин, обозначающий световой поток, падающий на единицу площади, измеряющий, сколько света освещает поверхность.

A scientific term referring to the luminous flux incident on a unit area, measuring how much light illuminates a surface.

uncountable

1. Luminous flux per unit areaC1formalscientific

   The measure of the amount of light falling on a surface, expressed in lux (lumens per square meter).

   Освещённость

   • The illuminance in the office was measured at 500 lux.
   • Proper illuminance is crucial for reading without eye strain.
   • The sensor recorded an illuminance of 10,000 lux under direct sunlight.

   Synonymsillumination