van der Meer theorem

Certainly! Van der Meer's theorem relates to measuring the size and shape of particles or objects, especially when they are very small, like electrons or atomic nuclei. It states that by overlapping two beams of particles and measuring the rate at which they collide, we can determine the spatial distribution or size of the particles without directly imaging them. Essentially, by scanning and analyzing how often particles interact under different conditions, scientists can accurately infer their physical dimensions and structures. This method is fundamental in areas like particle physics to understand the microscopic world.