The Wand-Lighting Charm (Lumos) is a light-creation charm that is used to illuminate the tip of the caster’s wand. This light is rather warm. The counter-charm for the spell is Nox, which may be used to extinguish the light from the caster’s wand.
In Harry Potter’s universe, the need to unlock a door, disable an adversary, or repair a broken artifact was usually met with charms or magic spells. As a result, as a student at his school, Harry was obliged to learn how to cast various spells. The spells that Harry and others learned were employed to meet a wide range of demands, from the mundane to the spectacular.
The Wand-Lighting Charm (Lumos) was a charm that lit the caster’s wand’s tip. Allowing the caster to see in the dark. The Wand-Extinguishing Charm (Nox) was the spell’s counter-charm. It was used to extinguish the light from the caster’s wand.
The Wand-Lighting Charm, despite its seeming simplicity, was not created until the 18th century. It was initially employed publicly by its inventor, Levina Monkstanley, in the Ministry of Magic in 1772, much to the surprise of her colleagues, to assist her in looking for a fallen quill in a dusty nook.
However, Garvin Lügner (a German magician) claimed to have created the spell while working on his Instant Darkness Powder. It was eventually revealed that Lügner had lied about the charm’s development. That his Instant Darkness Powder accomplished little more than lower the lights somewhat.
This spell was taught at Hogwarts School of Witchcraft and Wizardry’s first-year Defence Against the Dark Arts and Charms classes. It was documented in The Dark Forces. A Guide to Self-Protection, another unnamed spellbook. and the Book of Spells. This spell was also commonly employed when Hogwarts students skulked around the castle or the Forbidden Forest. Especially at night or in gloomy locations.