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# Physics/Funzionamento dello Giroscopio

Question
Grazie per la risposta, puņ spiegarmi in poche parole come funziona il giroscopio e come percepisce il movimento della Terra?

http://it.wikipedia.org/wiki/Giroscopio

Very well, but your answer will be in English.  I used google translate to get an understanding of it.  In short, a gyroscope works through conservation of angular momentum.  You can't change its direction of spin (as determined by the right hand rule, where you curl your fingers in the direction of the rotation and your thumb points in the direction of the resulting angular momentum) without applying forces to alter its angular momentum.  So as a high speed gyroscope spins, the forces required to change its direction of rotation are very large.  Therefore, as the Earth rotates, a gyroscope with angular momentum perpendicular to the axis of rotation will tilt.  For off-axis detection, more detailed calculations are required.

Physics

Volunteer

#### Dr. Stephen O. Nelson

##### Expertise

I can answer most basic physics questions, physics questions about science fiction and everyday observations of physics, etc. I'm also usually good for science fair advice (I'm the regional science fair director). I do not answer homework problems. I will occasionally point out where a homework solution went wrong, though. I'm usually good at explaining odd observations that seem counterintuitive, energy science, nuclear physics, nuclear astrophysics, and alternative theories of physics are my specialties.

##### Experience

I was a physics professor at the University of Texas of the Permian Basin, research in nuclear technology and nuclear astrophysics. My travelling science show saw over 20,000 students of all ages. I taught physics, nuclear chemistry, radiation safety, vacuum technology, and answer tons of questions as I tour schools encouraging students to consider careers in science. I moved on to a non-academic job with more research just recently.

Education/Credentials
Ph. D. from Duke University in physics, research in nuclear astrophysics reactions, gamma-ray astronomy technology, and advanced nuclear reactors.