@article{benedetto_iuele_russo_2023,  title={Playing with two rays of light},  volume={45},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2022-0241},  DOI={10.1590/1806-9126-RBEF-2022-0241},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Benedetto, Elmo and Iuele, Giuseppe and Russo, Ivan},  year={2023},  pages={e20220099} }