noun
- plural of illuminance; measures of the amount of light falling on a surface
Usage: technical; physics
Examples
- The engineer measured illuminances at various points throughout the office.
- Different illuminances are required for reading versus general lighting.
- The study compared illuminances in natural versus artificial lighting conditions.
- Proper illuminances help reduce eye strain in work environments.
- The lighting designer calculated the necessary illuminances for each room.
- Safety regulations specify minimum illuminances for emergency exits.