@article{giacometti_2021,  title={Foucault pendulum revisited, the determination of precession angular velocity using Cartesian coordinates},  volume={43},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2019-0140},  DOI={10.1590/1806-9126-RBEF-2019-0140},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Giacometti, José A.},  year={2021},  pages={e20190140} }