Particle physics
Particle physics is a branch of physics which studies the nature of particles that are the constituents of what is usually referred to as matter and radiation. In current understanding, particles are excitations of quantum fields and interact following their dynamics. Although the word "particle" can be used in reference to many objects (e.g. a proton, a gas particle, or even household dust), the term "particle physics" usually refers to the study of "smallest" particles and the fundamental fields that must be defined in order to explain the observed particles
Particle physics is the study of the elementary constituents of matter and energy, and the interactions between them. In addition, particle physicists design and develop the high energy accelerators, detectors, and computer programs necessary for this research. The field is also called "high-energy physics" because many elementary particles do not occur naturally, but are created only during high-energy collisions of other particles.Nuclear physics
Nuclear Physics is the field of physics that
studies the constituents and interactions of atomic nuclei. The most
commonly known applications of nuclear physics are nuclear power
generation and nuclear weapons technology, but the research has provided
application in many fields, including those in nuclear medicine and
magnetic resonance imaging, ion implantation in materials engineering,
and radiocarbon dating in geology and archaeology.
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