Definition of positron in English:

positron

noun ˈpɒzɪtrɒnˈpɑzəˌtrɑn

Physics

A subatomic particle with the same mass as an electron and a numerically equal but positive charge.
〔物理〕正电子，阳电子
Example sentencesExamples
- So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration.
- The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays.
- The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons.
- The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles.
- Electrons, positrons, and photons can be separated and isolated at macroscopic distances.

Origin

1930s: from positive + -tron.

Definition of positron in US English:

positron

nounˈpɑzəˌtrɑnˈpäzəˌträn

Physics

A subatomic particle with the same mass as an electron and a numerically equal but positive charge.
〔物理〕正电子，阳电子
Example sentencesExamples
- The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons.
- The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles.
- Electrons, positrons, and photons can be separated and isolated at macroscopic distances.
- So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration.
- The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays.

Origin

1930s: from positive + -tron.

词汇	positron
释义	Definition of positron in English: positron noun ˈpɒzɪtrɒnˈpɑzəˌtrɑn Physics A subatomic particle with the same mass as an electron and a numerically equal but positive charge. 〔物理〕正电子，阳电子 Example sentencesExamples So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration. The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays. The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons. The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles. Electrons, positrons, and photons can be separated and isolated at macroscopic distances. Origin 1930s: from positive + -tron. Definition of positron in US English: positron nounˈpɑzəˌtrɑnˈpäzəˌträn Physics A subatomic particle with the same mass as an electron and a numerically equal but positive charge. 〔物理〕正电子，阳电子 Example sentencesExamples The term accelerators most commonly refers to particle accelerators, devices for increasing the velocity of subatomic particles such as protons, electrons, and positrons. The full scattering amplitude is the sum of all contributions from all possible loops of photons, electrons, positrons, and other available particles. Electrons, positrons, and photons can be separated and isolated at macroscopic distances. So the normally stable proton can decay into a neutron, a positron, and a neutrino if continuously fed enough energy through constant, extreme acceleration. The decaying atoms emit positrons, which encounter electrons and are annihilated, releasing pairs of gamma rays. Origin 1930s: from positive + -tron.
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