Problem

Darkness

Other Names:
Shadowiness
Dimness
Gloominess
Nature:

Darkness, the polar opposite of brightness, is understood as a lack of illumination or an absence of visible light.

Human vision is unable to distinguish color in conditions of either high brightness or very low brightness. In conditions with insufficient light levels, color perception ranges from achromatic to ultimately black.

The emotional response to darkness has generated metaphorical usages of the term in many cultures.

Referring to a time of day, complete darkness occurs when the Sun is more than 18° below the horizon, without the effects of twilight on the night sky.

Broader Problems:
Absolute properties*complex
Reduced By:
Light pollution
Subject(s):
Life Death
Related UN Sustainable Development Goals:
GOAL 1: No PovertyGOAL 2: Zero HungerGOAL 3: Good Health and Well-beingGOAL 13: Climate Action
Problem Type:
B: Basic universal problems
Date of last update
23.12.2019 – 04:30 CET