query: Optical absorption in a semiconductor for $E<E_g$
positive_passages.docid: 76757
positive_passages.text: How do photons know they can or can't excite electrons in atoms?
negative_passages.docid: 72372
negative_passages.text: Maximum wavelength of a photon/electromagnetic radiation?
negative_passages.docid: 41332
negative_passages.text: Significance of the term "diffusion" in Grover's diffusion operator
negative_passages.docid: 74065
negative_passages.text: Proof of de Broglie wavelength for electron
negative_passages.docid: 140568
negative_passages.text: Calculation of the avalanche effect coefficient
negative_passages.docid: 93865
negative_passages.text: Where does the photon orbital angular momentum go in light-matter interactions?
negative_passages.docid: 98458
negative_passages.text: Radiation emission and absorption
negative_passages.docid: 23937
negative_passages.text: What is the mechanism behind the slowdown of light/photons in a transparent medium?
negative_passages.docid: 116799
negative_passages.text: Theoretical Proof of Pauli's Exclusion Principle
negative_passages.docid: 122836
negative_passages.text: If light is an electric and (magnetic field), how can it be absorbed?
negative_passages.docid: 112426
negative_passages.text: Transmittance of glass
negative_passages.docid: 134172
negative_passages.text: Photons acting as carriers of both attractive and repulsive forces
negative_passages.docid: 121197
negative_passages.text: Eigenvalues and eigenfunctions of the exponential potential $ V(x)=\exp(|x|) $
negative_passages.docid: 129261
negative_passages.text: Photoelectric effect absorption coefficient decreases with energy, why?
negative_passages.docid: 138159
negative_passages.text: Wavelength and resolution
negative_passages.docid: 79024
negative_passages.text: the derivation of E(X|X)
negative_passages.docid: 106917
negative_passages.text: Do individual rays of light lose energy via the inverse square law?