@article{202408.0897, doi = {10.20944/preprints202408.0897.v1}, url = {https://doi.org/10.20944/preprints202408.0897.v1}, year = 2024, month = {August}, publisher = {Preprints}, author = {Qian Chen}, title = {Revisiting Maxwell's Equations for Observers: Direct Derivation of Doppler and Sagnac Effect}, journal = {Preprints} }