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7 Apr 2021: k 2h. a,. a. (2.22). We recognise this as the first Brillouin zone. ... function of k 2 [/a,/a). The spectrum that we previously saw in Figure 18 then.

7 Apr 2021: k 2h. a,. a. (3.22). We recognise this as the first Brillouin zone. ... function of k 2 [/a,/a). The spectrum that we previously saw in Figure 28 then.

7 Apr 2021: We can change them as. φ φ αt. and A A α (1.6). ... A A α. Recalling the expression for α in spherical polars, we find that forθ 6= 0,π, we can indeed relate ANφ and ASφ by a gauge transformation,.

25 Aug 2021: 1.2.5 An Example: A Hard Sphere and Spherical Bessel Functions 29. ... atom. It was used by Franklin, Crick and Watson to understand the structure of DNA.