Editing Gyroscope (section)

=== HRG ===

The [[hemispherical resonator gyroscope]] (HRG), also called a wine-glass gyroscope<ref>{{Cite book |last=Grewal |first=Mohinder S. |url=https://www.worldcat.org/oclc/663976587 |title=Global positioning systems, inertial navigation, and integration |date=2007 |publisher=Wiley-Interscience |others=Lawrence R. Weill, Angus P. Andrews |isbn=978-1-61583-471-6 |edition=2nd |location=Hoboken, N.J. |pages=329–331 |oclc=663976587}}</ref> or mushroom gyro, makes use of a thin solid-state hemispherical shell, anchored by a thick stem. This shell is driven to a flexural resonance by electrostatic forces generated by electrodes which are deposited directly onto separate fused-quartz structures that surround the shell. Gyroscopic effect is obtained from the inertial property of the flexural standing waves.<ref>{{Cite journal |last1=Carta |first1=G. |last2=Nieves |first2=M. J. |last3=Jones |first3=I. S. |last4=Movchan |first4=N. V. |last5=Movchan |first5=A. B. |date=2019-10-21 |title=Flexural vibration systems with gyroscopic spinners |journal=Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences |volume=377 |issue=2156 |pages=20190154 |doi=10.1098/rsta.2019.0154 |issn=1471-2962 |pmc=6732376 |pmid=31474205|bibcode=2019RSPTA.37790154C }}</ref>