In the next year came the discovery of the first subatomic particle, the electron. Gamma rays are produced in many processes of particle physics. The photon is a type of elementary particle. Examples of mesons commonly produced in particle physics experiments include pions and kaons. SEC works by trapping these smaller molecules in the pores of a particle. Uranium decays slowly by emitting an alpha particle. LDEX detected an average of one 0.3 micrometer Moon dust particle each minute. There are several types of electrical currents used in magnetic particle inspection. The quantity is proportional to the energy deposited by the ionizing particle. This enables precise measurements of the particle properties. The 1947 discovery of the pion ushered in the modern era of particle physics. Polonium is dangerous as an alpha particle emitter. Salam contributed to developments in theoretical and particle physics. It can be defined using the radius of the hypothesized Planck particle. This pulse is proportional to the volume of the sensed particle.