This difference in energy between the two conformations, known as the torsion energy, is low compared to the thermal energy of an ethane molecule at ambient temperature.
ðɪs dˈɪfɹəns ɪn ˈɛnɚdʒi bᵻtwˌiːn ðə tˈuː kɑːnfoːɹmˈeɪʃənz, nˈoʊn æz ðə tˈoːɹʃən ˈɛnɚdʒi, ɪz lˈoʊ kəmpˈɛɹd tə ðə θˈɜːməl ˈɛnɚdʒi əvən ˈɛθeɪn mˈɑːlɪkjˌuːl æɾ ˈæmbiənt tˈɛmpɹɪtʃɚ.