Throughout the 1950s and 1960s, improvements in particle accelerators and particle detectors led to a bewildering variety of particles were found in high-energy experiments and the term "elementary particle" referred to dozens of particles, most of them unstable.
Improvements in particle accelerators and particle detectors were found in high-energy experiments "elementary particle" referred to dozens of particles unstable. This was throughout the 1950s and 1960s. Improvements in particle accelerators and particle detectors were found in high-the term "elementary particle" referred to dozens of particles unstable. This was throughout the 1950s and 1960s. These particle accelerators and particle detectors were led to a bewildering variety of particles. Particles were most of them.