haʊˈɛvɚ, ðə tɛknˈiːk ɹᵻmˈeɪnd ɛkspˌɛɹɪmˈɛntəl sˈɪns nˈoʊ mətˈɪɹiəl ɔːɹ tɛknˈiːk sˈiːmd tə dᵻlˈɪvɚ ðɪ ˈɑːptɪkəl kwˈɔlᵻɾi dɪzˈaɪɚd.
However, the technique remained experimental since no material or technique seemed to deliver the optical quality desired.