If you pass a wave (like light) through a whole bunch of openings, you can a nice and clear diffraction pattern. Why? First, there is something you need to know about waves.

Diffraction spikes are caused by interference due to the wave nature of light. The patterns produced depend on the shape of the telescope’s mirror and the number of spider struts.

Diffraction gratings like these have a number of other uses as well; the video also shows a specific pattern being used to focus a telescope for astrophotography, and a few others in the past have ...

According to diffraction measurements made with an electron microscope, ... In the illustration: A tesseract ... Scientists glimpse 4D crystal structure using surface wave patterns ...

But because they are so short, the diffraction pattern can be recorded before a sample blows apart. Recent advances in XFEL technology have allowed a more than 10 20 -fold increase in the intensity of ...