The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current. It was discovered by Edwin Hall in 1879.
The Hall coefficient is defined as the ratio of the induced electric field to the product of the current density and the applied magnetic field. It is a characteristic of the material from which the conductor is made, since its value depends on the type, number, and properties of the charge carriers that constitute the current.
Read more about Hall Effect: Discovery, Theory, Applications, The Corbino Effect
Famous quotes containing the words hall and/or effect:
“Having children can smooth the relationship, too. Mother and daughter are now equals. That is hard to imagine, even harder to accept, for among other things, it means realizing that your own mother felt this way, too—unsure of herself, weak in the knees, terrified about what in the world to do with you. It means accepting that she was tired, inept, sometimes stupid; that she, too, sat in the dark at 2:00 A.M. with a child shrieking across the hall and no clue to the child’s trouble.”
—Anna Quindlen (20th century)
“That when that knot’s untied that made us one,
I may seem thine, who in effect am none.
And if I see not half my dayes that’s due,
What nature would, God grant to yours and you;”
—Anne Bradstreet (c. 1612–1672)