| 41. | The result is that if the gap is very narrow only diffraction patterns with bright centers can occur.
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| 42. | The mapping from a crystal structure to its image or diffraction pattern has been relatively well understood and documented.
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| 43. | The Fraunhofer diffraction pattern is shown in the image together with a plot of the intensity vs . angle.
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| 44. | Only by considering the full dynamical model through multislice calculations can the diffraction patterns generated by PED be simulated.
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| 45. | Goodman uses this method to derive expressions for the diffraction pattern obtained with sinusoidal amplitude and phase modulation gratings.
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| 46. | An example of what a diffraction pattern obtained in this way may look like is shown in figure 2.
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| 47. | James Gregory discovered the diffraction grating by passing sunlight through a bird feather and observing the diffraction pattern produced.
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| 48. | These sheets then stack with very little long range order resulting in Bragg diffraction patterns with very broad peaks.
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| 49. | By analyzing the diffraction pattern using software, scientists can make a map of the electron density in the crystal.
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| 50. | Then a diffraction pattern is created by using the power spectrum function in Digital Micrograph software ( middle ).
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