In astrophysics, a magnetic mirror point is a point where the motion of a charged particle trapped in a magnetic field (such as the Earth's) reverses its direction. More precisely, it is the point where the projection of the particle's velocity vector in the direction of the field vector is equal to zero.
Famous quotes containing the words magnetic, mirror and/or point:
“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)
“At first, it must be remembered, that [women] can never accomplish anything until they put womanhood ahead of wifehood, and make motherhood the highest office on the social scale.”
—“Jennie June” Croly 1829–1901, U.S. founder of the woman’s club movement, journalist, author, editor. Demorest’s Illustrated Monthly and Mirror of Fashions, pp. 24-5 (January 1870)
“Only he has the calling for politics who is sure that he will not crumble when the world from his point of view is too stupid or base for what he wants to offer. Only he who in the face of all this can say “In spite of all!” has the calling for politics.”
—Max Weber (1864–1920)