(J. G. M. - J. G. M. Van der Meer)

J. G. M. Van der Meer was a Dutch experimental physicist renowned for developing a method called the "van der Meer scan," which precisely measures how particles like protons collide in accelerators. His technique involves adjusting the beams and analyzing interaction rates, allowing scientists to determine the exact number of particles (luminosity) in experiments. This work was crucial for high-energy physics research, including discoveries at CERN. Van der Meer's contributions earned him the Nobel Prize in Physics in 1984, recognizing his vital role in advancing the precision of particle physics experiments.