Daga baya aka amsa tambaya a cikin wannan harshe kamar yadda aka wuce: An karɓa da sauri kuma an ci gaba da karɓar tsarin sararin samaniya na Minkowski. Alal misali, Arnold Sommerfeld (1910) ya maye gurbin bayanin matrix na Minkowski ta hanyar ladabi mai ladabi kuma ya kirkiro kalmomin "vector hudu" da "vector shida". Ya kuma gabatar da wani tsari na trigonometric na ka'idar saurin saurin haɓaka, wanda a cewar Sommerfeld, ya kawar da yawancin abin mamaki na wannan ra'ayi. Sauran muhimman gudummawar da Laue ya yi (1911, 1913), wanda ya yi amfani da tsarin sararin samaniya don ƙirƙirar ka'idar ka'idar jiki da kuma ka'idar kwayoyin halitta. Ya fadada maganganun Minkowski don tafiyar matakai na lantarki zuwa ga dukkan dakarun da za a iya yiwuwa kuma ta haka ya bayyana ma'anar ma'anar makamashi-makamashi.
Tsarin trigonometric na ƙa'idar ƙara saurin saurin