Precession of a Spin-1/2 Particle in a Constant Magnetic Field
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    Find Hamiltoninan (pic)
    Find eigenstates of the Hamiltonian (pic)
    Find time-progression expression

    Û(t) = exp(-ι Ĥ t/ħ) = exp(-ι ωₒt S𝓏/ħ) = exp(-ι θ S𝓏/ħ)
    Û(t) = R̂(σk̂) 
           ⸜   ⸝
        Rotational Operator

    So for arbitrary t (pic)


    Projection along 𝓏-axis? <+𝓏|Ψ(t)>

--->Why for (-x)-axis does this turn out to be sin²(ω₀ t/2)

Hw->Find projection of 𝓎-axis