{{page>wiki:headers:hheader}} ===== Projection Prerequisites ===== Before approaching this lesson, students should: * Have experience analyzing the results of the Stern-Gerlach experiment. * Have a solid understanding of postulates 1-4 of quantum mechanics. * Be well-versed in the use of bra-ket notation. * Be able to calculate $\vert\langle out\vert in \rangle\vert^2$ probabilities {{page>wiki:footers:courses:spfooter}}