feat(QuantumMechanics/Blackbody): Formalize Wien's displacement law

[dwan-ith]

• Wien's Displacement Law:
  • Auxiliary function $h_n(x) = x - n(1 - e^{-x})$ and its derivative
  • Existence and uniqueness of positive root via IVT and strict monotonicity
  • Physical constants $x_5$ (wienConstant5) and $x_3$ (wienConstant3)
  • Rigorous enclosures $4 < x_5 < 5$ and $2 < x_3 < 3$ (0 sorry)
  • Global maxima of physical radiance curves (isMaxOn)
  • Wien's displacement laws: $\lambda_1 T_1 = \lambda_2 T_2$ and $\nu_1/T_1 = \nu_2/T_2$
  • Proof that wavelength and frequency peaks differ (wien_roots_differ)

[github-actions]

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