Simulation of diffraction pattern duality experiment. Each particle impacts the phosphor screen at a particular localized point, but when many individual particle impacts occur, the wave-based diffraction pattern emerges.
Jpowder, http://www.jpowder.org, is a Java viewer of powder diffraction data, and is a collaborative project between the ISIS Facility of the STFC and the E-Learning and Software Develepment Unit of the Kasem Bundit University.