english: Tom's world line has gone vertical, so this does represent the world from his point of view, but most importantly, the light world line has never changed its angle, and so light will be measured by Tom going at the correct speed.
non_english: Tomova svetska linija je postala vertikalna, tako da to predstavlja svet sa njegove tačke posmatranja, ali najvažnije je da svetska linija svetlosti uopšte nije promenila ugao i tako će se svetlost koju meri Tom kretati ispravnom brzinom.