wˈaɪtʃɚt wʌz ˈɔːlsoʊ ˈɪntɹɛstᵻd ɪn fˈiːldz aʊtsˈaɪd ʌv fˌʌndəmˈɛntəl fˈɪzɪks ænd ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd nˈaɪnti sˈɪks, hiː pˈʌblɪʃt ðə fˈɜːst vˈɛɹɪfˌaɪəbəl mˈɑːdəl ʌvðɪ ˈɜːθz ɪntˈɪɹiɚɹ æz ɐ sˈɪɹiz ʌv ʃˈɛlz.
Wiechert was also interested in fields outside of fundamental physics and in 1896, he published the first verifiable model of the Earth's interior as a series of shells.