Assertion: gyroscope | /r/HasProperty | invented
Facets:
value: for the freestyle bmx bicycle
type: PURPOSE
Source sentences:
text: Gyroscopes were first invented and named in the 19th century by French physicist Jean-Bernard-Léon Foucault.
text: The detangler, Gyro or rotor is an invention for the freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up.
text: The gyroscope effect was discovered in 1817 by Johann Bohnenberger; the gyroscope was invented, and the effect named after it, in 1852 by Léon Foucault for an experiment involving the rotation of the Earth.