825.3 consequences of Einstein's postulates 3. Simultaneity is relative Station frame: s Einstein’ s train: Train frame: S I(r,ya, 4, t) I(rn,ya,zg,) frames B→→l dof frameS A B In s frame the two light signals arrive C simultaneously 8 25.3 consequences of Einsteins postulates I(r,,v,z,, t) (xB,yB,ze, t) frames frames A I(xB,y,2,2) frames frames A 2121 Einstein’s train: s s′ Station frame: Train frame: In S frame: the two light signals arrive C simultaneously. 3. Simultaneity is relative . . . A C B A′ C′ B′ u I(x , y ,z ,t) A A A II(x , y ,z ,t) B B B frameS frameS′ . §25.3 consequences of Einstein’s postulates . . . A C B A′ .C′ B′ u ( , , , )2 II x y z t B B B ( , , , ) ′ ′ ′ ′ 1 I x y z t A A A ′ ′ ′ ′ . . . . A C B A′ C′ B′ u I(x , y ,z ,t) A A A II(x , y ,z ,t) B B B frameS frameS′ frameS frameS′ §25.3 consequences of Einstein’s postulates