2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192258It is shown that the nuclear effects playing a relevant role in Deep Inelastic Scattering of polarized electrons by polarized $^3$He are mainly those arising from the effective proton and neutron polarizations generated by the $S'$ and $D$ waves in $^3$He. A simple and reliable equation relating the neutron, $g_1^n$, and $^3$He, $g_1^3$, spin structure functions is proposed. It is shown that the measurement of the first moment of the $^3$He structure function can provide a significant check of the Bjorken Sum Rule.11 pages (revTeX), DFUPG 75/93; 5 (postscript) figures available upon request from the authorsNuclear Theorytext