where formula_18 is the position vector pointing from the origin to the location of the volume element, and formula_19 is the current density vector at that location.
w ɛ ɹ WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY eɪ t iː n WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY p ə z ɪ ʃ ə n WORD_BOUNDARY v ɛ k t ə ɹ WORD_BOUNDARY p ɔɪ n t ɪ ŋ WORD_BOUNDARY f ɹ ʌ m ð ɪ WORD_BOUNDARY ɔ ɹ ɪ d̠ʒ ɪ n WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY l oʊ k eɪ ʃ ə n WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY v ɑ l j uː m WORD_BOUNDARY ɛ l ɪ m ə n t WORD_BOUNDARY æ n d WORD_BOUNDARY f ɔ ɹ m j ʊ l ə WORD_BOUNDARY n aɪ n t iː n WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY k ɜː ɹ ə n t WORD_BOUNDARY d ɛ n s ɪ t i WORD_BOUNDARY v ɛ k t ə ɹ ɹ WORD_BOUNDARY æ t WORD_BOUNDARY ð æ t WORD_BOUNDARY l oʊ k eɪ ʃ ə n WORD_BOUNDARY