• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 2 · Nature
• 22 · natural phenomena

22C · light

• 22C1 · natural light
• 22C2 · artificial light
• 22C3 · supernatural light
• 22C4 · colours, pigments, and paints
• 22C5 · reflection (light in general)
• 22C8 · shadow
• 22C9 · darkness