Faʻatupu se faʻamatalaga sili atu ona faigata o lenei fuaiupu Na fuafuaina e Svein Rosseland, ma fausia i le galulue faʻatasi ma Knut Strøm Gundersen (1909 - 1983) o le Norwegian commercial instrument manufacturer Gundersen & Løken.
O le mea moni, o se lomiga e sili atu ona lavelave o le fuaiupu o le "Na fuafuaina e Svein Rosseland, fausia e Gundersen & Løken, o se tagata gaosi oloa faapisinisi Norwegian, ma faapipiiina i le fogafale muamua o le Inisetiute mo Theoretic Astrophysics i le Iunivesite o Oslo. "