where v is the speed of the object and c is the speed of light. The quantity (v/c) is often labeled formula_2 (beta) and so the above equation can be rewritten:
w ɛ ɹ WORD_BOUNDARY v iː WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY s p iː d WORD_BOUNDARY ʌ v ð ɪ WORD_BOUNDARY ɑ b d̠ʒ ɛ k t WORD_BOUNDARY æ n d WORD_BOUNDARY s iː WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY s p iː d WORD_BOUNDARY ʌ v WORD_BOUNDARY l aɪ t WORD_BOUNDARY ð ə WORD_BOUNDARY k w ɔ n t ɪ t i WORD_BOUNDARY v iː WORD_BOUNDARY s l æ ʃ WORD_BOUNDARY s iː WORD_BOUNDARY ɪ z WORD_BOUNDARY ɔ f ə n WORD_BOUNDARY l eɪ b ə l d WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY t uː WORD_BOUNDARY b eɪ t ə WORD_BOUNDARY æ n d WORD_BOUNDARY s oʊ WORD_BOUNDARY ð ɪ WORD_BOUNDARY ə b ʌ v WORD_BOUNDARY ɪ k w eɪ ʒ ə n WORD_BOUNDARY k æ n WORD_BOUNDARY b iː WORD_BOUNDARY ɹ ɪ ɹ ɪ t ə n WORD_BOUNDARY