Augousti, A. T.; Gawełczyk, M.; Siwek, A.; Radosz, A. Touching ghosts: observing free fall from an infalling frame of reference into a Schwarzschild black hole. (English) Zbl 1263.83083 Eur. J. Phys. 33, No. 1, 1-11 (2012). MSC: 83C57 83C10 PDFBibTeX XMLCite \textit{A. T. Augousti} et al., Eur. J. Phys. 33, No. 1, 1--11 (2012; Zbl 1263.83083) Full Text: DOI Link
Augousti, A. T.; Radosz, A.; Ostasiewicz, K. A useful expression for relativistic energy conservation of a point mass in an isotropic static gravitational field. (English) Zbl 1219.83049 Eur. J. Phys. 32, No. 2, 535-540 (2011). MSC: 83C15 83C57 83C10 83C40 70H40 PDFBibTeX XMLCite \textit{A. T. Augousti} et al., Eur. J. Phys. 32, No. 2, 535--540 (2011; Zbl 1219.83049) Full Text: DOI
Augousti, A. T.; Radosz, A. An observation on the congruence of the escape velocity in classical mechanics and general relativity in a Schwarzschild metric. (English) Zbl 1119.70014 Eur. J. Phys. 27, No. 2, 331-335 (2006). MSC: 70H40 83F05 PDFBibTeX XMLCite \textit{A. T. Augousti} and \textit{A. Radosz}, Eur. J. Phys. 27, No. 2, 331--335 (2006; Zbl 1119.70014) Full Text: DOI