Particle detectorIn experimental and applied particle physics, nuclear physics, and nuclear engineering, a particle detector, also known as a radiation detector, is a device used to detect, track, and/or identify ionizing particles, such as those produced by nuclear decay, cosmic radiation, or reactions in a particle accelerator. Detectors can measure the particle energy and other attributes such as momentum, spin, charge, particle type, in addition to merely registering the presence of the particle.
Community serviceCommunity service is unpaid work performed by a person or group of people for the benefit and betterment of their community without any form of compensation. Community service can be distinct from volunteering, since it is not always performed on a voluntary basis and may be compulsory. While individual benefits may be realized, they may be performed for a variety of reasons, including citizenship requirements, alternatives to criminal justice sanctions, school or class requirements, and requisites to obtain certain benefits.
