PT Journal
AU Fanchiotti, H
   Garcia Canal, CA
   Mayosky, M
   Veiga, A
   Vento, V
TI Measuring the Hannay geometric phase
SO American Journal of Physics
JI Am. J. Phys.
PY 2022
BP 430
EP 435
VL 90
IS 6
DI 10.1119/5.0081149
LA English
AB The Hannay geometric phase is the classical analog of the well-known Berry phase. Its most familiar example is the effect of the latitude lambda on the motion of a Foucault pendulum. We describe an electronic network whose behavior is exactly equivalent to that of the pendulum. The circuit can be constructed from off-the-shelf components using two matched transconductance amplifiers that comprise a gyrator to introduce the non-reciprocal behavior needed to mimic the pendulum. One may precisely measure the dependence of the Hannay phase on lambda by circuit simulation and by laboratory measurements on a constructed circuit.
ER