Chapter 38409Q38.10Yes, but no diffraction effects are observed because the separation distance between adjacent ribs isso much greater than the wavelength of x-rays. Diffraction does not limit the resolution of an x-rayimage. Diffraction might sometimes limit the resolution of an ultrasonogram.Q38.11Vertical. Glare, as usually encountered when driving or boating, is horizontally polarized. Reflectedlight is polarized in the same plane as the reflecting surface. As unpolarized light hits a shinyhorizontal surface, the atoms on the surface absorb and then reemit the light energy as a reflection.We can model the surface as containing conduction electrons free to vibrate easily along the surface,but not to move easily out of surface. The light emitted from a vibrating electron is partially orcompletely polarized along the plane of vibration, thus horizontally.Q38.12The earth has an atmosphere, while the moon does not. The nitrogen and oxygen molecules in the
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