Based on the two postulates that the speed of light is constant and the laws of physics apply equally to all inertial reference frames , the theory predicts strange effects such as time dilation , length contraction and simultaneity of events varies according to viewers 基于兩個(gè)論點(diǎn),即光速不變及物理定律可應(yīng)用于任何慣性系統(tǒng),狹義相對(duì)論預(yù)測(cè)了時(shí)間變慢長(zhǎng)度收縮及同時(shí)事件是因觀察者而異等奇怪現(xiàn)象。