The Comstock Law was a 19th centuryUnited States law that made it illegal to send any "obscene, lewd, or lascivious" books through the mail. It was passed on March 3, 1873 and is regarded by many as censorship.
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... gyro tops will not simply fall over, but start precessing around. (The precessing motion is perpendicular to the torque trying to make the gyro fall over.)
The axis of ...