↑ Kleppner & Kolenkow 1978, Chapters 11–14 1 2 3 4 Einstein 1905, See section 5, "The composition of velocities". ↑ Galilei 2001 ↑ Galilei 1954 Galilei used this insight to show that the path of the weight when seen from the shore would be a parabola. ↑ Mermin 2005, p. 37 ↑ Landau & Lifshitz 2002, p. 13 ↑ Kleppner & Kolenkow 1978, p. 457 ↑ Jackson 1999, p. 531 ↑ Lerner & Trigg 1991, p. 1053 ↑ Friedman 2002, pp. 1–21 ↑ Landau & Lifshitz 2002, p. 37 Equation (12.6) This is derived quite differently by consideration of invariant cross sections. ↑ Kleppner & Kolenkow 1978, p. 474 ↑ Fizeau & 1851E ↑ Fizeau 1860 ↑ Landau & Lifshitz 2002, p. 14 ↑ Bradley & 1727–1728 ↑ Kleppner & Kolenkow 1978, p. 477 In the reference, the speed of an approaching emitter is taken as positive.