Magnetic Field and Permanent Magnets
Permanent magnets are objects that produce their own persistent magnetic fields. They are made of ferromagnetic materials, such as iron and nickel, that have been magnetized, and they have both a north and a south pole.
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Famous quotes containing the words magnetic, field and/or permanent:
“We are in great haste to construct a magnetic telegraph from Maine to Texas; but Maine and Texas, it may be, have nothing important to communicate.”
—Henry David Thoreau (1817–1862)
“Because mothers and daughters can affirm and enjoy their commonalities more readily, they are more likely to see how they might advance their individual interests in tandem, without one having to be sacrificed for the other.”
—Mary Field Belenky (20th century)
“Sickness comes to us all, Mr. Dillon.... We never know when, we never know why, we never know how. The only blessed thing we know is it’ll come at the most inconvenient, unexpected time. Just when you’ve got tickets to the World Series. And that’s the way the permanent waves.”
—Donald E. Westlake (b. 1933)