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232                                                  Essentials of Physical Chemistry

                Calculate the ‘‘d’’ distance this implies between Ni atoms in this plane. Compare your answer
                to the value of 2.18 Å used by Davisson and Germer for crystalline Ni.
            10.6 Look up the Davisson–Germer paper in Physical Review, vol. 30, p. 705, (1927) and look at
                the picture of the Ni crystal in their Figure 5. Then look up the word ‘‘anneal’’ in a dictionary
                and give your own brief description of what annealing metal means.


            REFERENCES
              1. Planck, M., On the law of the energy distribution in the normal Spectrum, Ann. Phys., 4, 553 (1901).
              2. Powell, J. L. and B. Craseman, Quantum Mechanics, Addison-Wesley Publishing Co., Inc., Reading,
                MA, 1961.
              3. Einstein, A., Concerning an heuristic point of view toward the emission and transformation of light, Ann.
                Phys., 17, 132 (1905).
              4. Davisson, C. and L. H. Germer. Reflection of electrons by a crystal of nickel. Nature, 119, 558 (1927).
              5. De Broglie, L., Radiations. — Ondes et quanta, Comptes Rendus, 177, 507 (1923), see also http:==www.
                davis-inc.com=physics=
              6. Bell, M. and S. E. Green, On radiometer action and the pressure of radiation, Proc. Phys. Soc., 45, 320
                (1933), see also Hull, G. F., M. Bell, and S. E. Green, Notes on the pressure of radiation, Proc. Phys.
                Soc., 46, 589 (1934).
              7. McQuarrie, D. H., Quantum Chemistry, University Science Books, Sausalito, CA, 1983, p. 10.
              8. Lide, D. R., CRC Handbook of Chemistry and Physics, 90th Edition, CRC Press, Boca Raton, FL, 2009–
                2010, p. 12–121.
              9. Einstein, A., Does the inertia of a body depend on its energy content? Ann. Phys. (Lpz.), 18, 639 (1905);
                see also http:==astrol.panet.utoledo.edu= ljc=world2.html
             10. Davisson, C. and L. Germer, Diffraction of electrons by a crystal of nickel, Phys. Rev., 30, 705 (1927).
             11. Lide, D. R., CRC Handbook of Chemistry and Physics, 87th Edition, CRC Press, Boca Raton, FL,
                2006–2007, p. 4–161.
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