The de broglie relation applies to all particles not just, Ask an Expert

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The de Broglie relation applies to all "particles," not just electrons and photons.

(a) Calculate the wavelength of a neutron whose kinetic energy is 1 eV.

(b) Estimate the wavelength of a pitched baseball. (Use any reasonable values for the mass and speed.) Explain why you don't see baseballs diffracting around bats.

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