ˈɛmɪl jˈoʊhɑːn wˈaɪtʃɚt twˈɛnti sˈɪks dᵻsˈɛmbɚ wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti wˈʌn nˈaɪntiːn mˈɑːɹtʃ nˈaɪntiːnhˈʌndɹɪd twˈɛnti ˈeɪt wʌzɐ dʒˈɜːmən fˈɪzɪsˌɪst ænd dʒˌiːoʊfˈɪzɪsˌɪst hˌuː mˌeɪd mˈɛni kˌɑːntɹɪbjˈuːʃənz tə bˈoʊθ fˈiːldz, ɪŋklˈuːdɪŋ pɹɪzˈɛntɪŋ ðə fˈɜːst vˈɛɹɪfˌaɪəbəl mˈɑːdəl əvə lˈeɪɚd stɹˈʌktʃɚɹ ʌvðɪ ˈɜːθ ænd bˌiːɪŋ ɐmˌʌŋ ðə fˈɜːst tə dɪskˈʌvɚ ðɪ ᵻlˈɛktɹɑːn.
Emil Johann Wiechert (26 December 1861 – 19 March 1928) was a German physicist and geophysicist who made many contributions to both fields, including presenting the first verifiable model of a layered structure of the Earth and being among the first to discover the electron.