where current density JD is the "displacement current", and J is the current density contribution actually due to movement of charges, both free and bound. Because , the charge continuity issue with Ampère's original formulation is no longer a problem. Because of the term in "�0∂E / ∂t", wave propagation in free space now is possible.
w ɛ ɹ WORD_BOUNDARY k ɜː ɹ ə n t WORD_BOUNDARY d ɛ n s ɪ t i WORD_BOUNDARY d̠ʒ eɪ d iː WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY d ɪ s p l eɪ s m ə n t WORD_BOUNDARY k ɜː ɹ ə n t WORD_BOUNDARY æ n d WORD_BOUNDARY d̠ʒ eɪ 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 k ɑ n t ɹ ɪ b j uː ʃ ə n WORD_BOUNDARY æ k t̠ʃ uː ə l i WORD_BOUNDARY d uː WORD_BOUNDARY t ə WORD_BOUNDARY m uː v m ə n t WORD_BOUNDARY ʌ v WORD_BOUNDARY t̠ʃ ɑ ɹ d̠ʒ ɪ z WORD_BOUNDARY b oʊ θ WORD_BOUNDARY f ɹ iː WORD_BOUNDARY æ n d WORD_BOUNDARY b aʊ n d WORD_BOUNDARY b ɪ k ʌ z WORD_BOUNDARY ð ə WORD_BOUNDARY t̠ʃ ɑ ɹ d̠ʒ WORD_BOUNDARY k ɑ n t ɪ n j uː ɪ t i WORD_BOUNDARY ɪ ʃ uː WORD_BOUNDARY w ɪ ð WORD_BOUNDARY æ m p ɛ ɹ z WORD_BOUNDARY ə ɹ ɹ ɪ d̠ʒ ɪ n ə l WORD_BOUNDARY f ɔ ɹ m j ʊ l eɪ ʃ ə n WORD_BOUNDARY ɪ z WORD_BOUNDARY n oʊ WORD_BOUNDARY l ɑ ŋ ɡ ə ɹ ɹ WORD_BOUNDARY ʌ WORD_BOUNDARY p ɹ ɑ b l ə m WORD_BOUNDARY b ɪ k ʌ z WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY t ɜː m WORD_BOUNDARY ɪ n WORD_BOUNDARY z iə ɹ oʊ WORD_BOUNDARY d ɛ l t ə WORD_BOUNDARY iː WORD_BOUNDARY s l æ ʃ WORD_BOUNDARY d ɛ l t ə WORD_BOUNDARY t iː WORD_BOUNDARY w eɪ v WORD_BOUNDARY p ɹ ɑ p ʌ ɡ eɪ ʃ ə n WORD_BOUNDARY ɪ n WORD_BOUNDARY f ɹ iː WORD_BOUNDARY s p eɪ s WORD_BOUNDARY n aʊ WORD_BOUNDARY ɪ z WORD_BOUNDARY p ɑ s ɪ b ə l WORD_BOUNDARY