The study of beta decay provided the first physical evidence for the existence of the neutrino. See also: Nuclear Reactor as the Antineutrino Source. Reference: Griffiths, David, Introduction to Elementary Particles, Wiley, 1987. It is estimated neutrino cross-section for interaction increases linearly with the energy of the incident neutrino. It is estimated neutrinos have interaction cross-sections about 20 orders of magnitude less than typical cross-sections of scattering of two nucleons (~10 -47m2 = 10 -19barn). Therefore, neutrinos are the most penetrating subatomic particles, capable of passing through Earth without any interaction. Neutrinos are subject to the weak force, which is of a much shorter range than the electromagnetic force and gravity force. Since neutrinos belong to the family of leptons, they are not subject to strong force. Currently (2015), it is not resolved whether the neutrino and its antiparticle are not identical particles.Ĭarrying no electric charge, they are not affected by electromagnetic forces that act on other charged leptons, such as electrons.
The second-generation consist of the muon (μ −) and muon neutrino (ν μ) The third generation consist of the tau (τ −) and the tau neutrino (ν τ). Each type of neutrino is associated with an antimatter particle, called an antineutrino, which also has a neutral electric charge and 1/2 spin. The first generation consists of the electron (e −) and electron-neutrino (ν e). There are three types of charged leptons, each associated with neutrino, forming three generations (between generations, particles differ by their quantum number and mass). The term neutrino comes from Italian, meaning “little neutral one,” and neutrinos are denoted by the Greek letter ν (nu). Neutrinos are weakly interacting subatomic particles with ½ units of spin. Neutrinos belong to the family of leptons, which means they do not interact via strong nuclear force.
#Definition of neutrino series
This series of webinars is focused on helping the physics community to communicate science and physics-based issues with the public.A neutrino is an elementary subatomic particle with infinitesimal mass (less than 0.3 eV.?) and no electric charge. Webinar Series: Engaging the Public through Science.
#Definition of neutrino professional
The Science Trust Project aims to empower APS members to contend with misinformation about science in their professional and personal lives and to help them understand the impact of their participation in addressing misinformation. The Wiki Scientist Program helps physicists improve the public’s access to physics knowledge, raise awareness of the accomplishments of marginalized groups within physics, and grow as science communicators by editing and adding to Wikipedia. Physicists To-Go brings real physicists to classrooms across the country with the goals of increasing science literacy and inspiring young minds to develop a passion for science. STEP UP designs high school physics lessons to empower teachers, create cultural change, and inspire young women to pursue physics in college. STEP UP is a national community of physics teachers, researchers, and professional societies. PhysicsQuest aims to introduce students to the basic concepts of physics through fun experiments that will sustain their interest in math and science.ĭownload materials and plan classroom experiments We encourage you to learn more and get involved with our current initiatives, and we hope you will join us as we introduce new ones in the coming months. While this site is now retired, The American Physical Society maintains its commitment to public outreach and engagement in physics.
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