Question: What is annihilation in history?

1 : the state or fact of being completely destroyed or obliterated : the act of annihilating something or the state of being annihilated The late 1940s and 50s were so pervaded by a general fear of nuclear annihilation that the era was known as the Age of Anxiety.—

What does annihilation mean in social studies?

noun. an act or instance of annihilating, or of completely destroying or defeating someone or something: the brutal annihilation of millions of people. the state of being annihilated; total destruction; extinction: fear of nuclear annihilation.

What happens when annihilation occurs?

Annihilation, in physics, reaction in which a particle and its antiparticle collide and disappear, releasing energy. The most common annihilation on Earth occurs between an electron and its antiparticle, a positron.

Where is positron found?

Positrons are produced naturally in β+ decays of naturally occurring radioactive isotopes (for example, potassium-40) and in interactions of gamma quanta (emitted by radioactive nuclei) with matter. Antineutrinos are another kind of antiparticle produced by natural radioactivity (β− decay).

How positron is created?

Positrons are produced naturally in β+ decays of naturally occurring radioactive isotopes (for example, potassium-40) and in interactions of gamma quanta (emitted by radioactive nuclei) with matter. Antineutrinos are another kind of antiparticle produced by natural radioactivity (β− decay).

Why do positrons exist?

Positrons are emitted in the positive beta decay of proton-rich (neutron-deficient) radioactive nuclei and are formed in pair production, in which the energy of a gamma ray in the field of a nucleus is converted into an electron-positron pair. discovered the particle called the positron.

How is positron formed?

Positrons are formed during decay of nuclides that have an excess of protons in their nucleus compared to the number of neutrons. When decaying takes place, these radionuclides emit a positron and a neutrino.

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