ELECTROMAGNETIC RADIATION
\ɪlˌɛktɹə͡ʊmɐɡnˈɛtɪk ɹˌe͡ɪdɪˈe͡ɪʃən], \ɪlˌɛktɹəʊmɐɡnˈɛtɪk ɹˌeɪdɪˈeɪʃən], \ɪ_l_ˌɛ_k_t_ɹ_əʊ_m_ɐ_ɡ_n_ˈɛ_t_ɪ_k ɹ_ˌeɪ_d_ɪ__ˈeɪ_ʃ_ə_n]\
Definitions of ELECTROMAGNETIC RADIATION
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radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
By Princeton University