A reaction wheel is a type of flywheel used primarily by spacecraft for attitude control without using fuel for rockets or other reaction devices.
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Famous quotes containing the words reaction and/or wheel:
“In contrast to revenge, which is the natural, automatic reaction to transgression and which, because of the irreversibility of the action process can be expected and even calculated, the act of forgiving can never be predicted; it is the only reaction that acts in an unexpected way and thus retains, though being a reaction, something of the original character of action.”
—Hannah Arendt (1906–1975)
“The word “revolution” itself has become not only a dead relic of Leftism, but a key to the deadendedness of male politics: the “revolution” of a wheel which returns in the end to the same place; the “revolving door” of a politics which has “liberated” women only to use them, and only within the limits of male tolerance.”
—Adrienne Rich (b. 1929)