darkening
Blackout (also blackout ):
- Global darkening refers to the reduction in daylight caused by tiny particles in the atmosphere.
- Darkening (botany) is used to control crops in a greenhouse.
- Darkening (air protection) describes an air protection measure in which artificial light sources are switched off or shielded
- Risk of blackout , removal of evidence
- Operational dimming , complete or almost complete light switch-off in rooms (e.g. cinema), has consequences for safety lighting and light control according to building law