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There are several kinds of whisker:
- For a hair, significant for sensing the surroundings, on the face of a mammal, see vibrissa.
- For a hair on a man's face, often called a whisker, see facial hair.
- For a hair-shaped protrusion from a metal's surface, stronger than is normal for bulk samples of that metal, see whisker (metallurgy).
- An old crystal radio receiver would often use a thin wire called a "cat's whisker" as a contact on a crystal of galena to form a diode.
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