Question: Crystals can be used to do interference experiments with photons (as for electrons in Fig. 28.8). Consider a crystal with a 0.40-nm spacing between atoms.

Crystals can be used to do interference experiments with photons (as for electrons in Fig. 28.8). Consider a crystal with a 0.40-nm spacing between atoms. 

(a) If the photon wavelength must be approximately this size to observe interference, what is the energy of this photon? 

(b) Where is this radiation in the electromagnetic spectrum? 


Figure 28.8

Crystals can be used to do interference experiments with photons (as for

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