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Although many papers have appeared on the theory of photographingrelativistically moving objects, pioneered by the classic work of Penrose andTerrell, three problems remain outstanding. (1) There does not seem to exist ageneral formula which gives the projection of a relativistically moving object,applicable to any object no matter how complicated, on a two-dimensional planein conformity with Terrell's observation. (2) No resolution seems to have beenprovided for the associated so-called `train' paradox. (3) No analyticaldemonstration seems to have been offered on how the Lorentz contraction may beactually detected on a photograph. This paper addresses all of these threeproblems. The analysis does not require any more than trigonometry andelementary differentiation.Comment: LaTeX, 14 pages, 6 figures, misprint correcte

Projection of relativistically moving objects on a two-dimensional plane, the `train' paradox and the visibility of the Lorentz contraction