Muggles' Guide to Harry Potter/Magic/Impervius

Impervius
Muggles' Guide to Harry Potter - Magic
Type	Spell
Features	Waterproofing
First Appearance	Harry Potter and the Prisoner of Azkaban

Overview edit

Beginner warning: Details follow which you may not wish to read at your current level.

Impervius (spelled that way in the books) is a spell that is used to waterproof items. It seems to work by actually repelling water, rather than preventing penetration.

Analysis edit

This spell is first used by Hermione to waterproof Harry's glasses in the Quidditch match against Hufflepuff in Harry Potter and the Prisoner of Azkaban; this match is played in a pounding downpour, with lightning and gale-force winds. Harry is unable to see the Snitch because the rain is streaking his glasses and distorting his vision, and this spell clears his glasses so he can see.

A relatively minor spell, it is used in several other Quidditch matches, but is not used elsewhere.

Questions edit

Study questions are meant to be left for each student to answer; please don't answer them here.

Being waterproof seems such a useful thing; why would this spell not be in much more general use?

Greater Picture edit

Intermediate warning: Details follow which you may not wish to read at your current level.