By omitting from special relativity the luminiferous aether, Einstein stated that time dilation and length contraction measured in an object in relative motion is inertial—that is, the object exhibits constant velocity, which is speed with direction, when measured by its observer.
Antuk ngaonang luminiferous aether saking relativitas khusus, Einstein maosang indik pelebaran waktu miwah kontraksi panjang sané kaukur ring asiki objek sané mamargi bergerak relatif wantah inersia—inggih punika, objek nyihnayang kecepatan konstan, inggih punika kecepatan antuk, rikala kaukur olih panyelehnyané.