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Paul Dirac It was Paul Dirac who suggested that there might be an "antiparticle" to the electron in 1928. His mathematical statement, which came to be called the Dirac equation, was an astonishing breakthrough in the understanding of elementary particles. In 1932, Carl D. Anderson actually discovered the positron and confirmed Dirac's postulation. The suggestion of the existence of the anti-electron and its discovery opened the door to the existence of other antimatter particles. It should be noted that Caltech graduate student Chung-Yao Chao is often cited as the first person to detect the positron (1930), but did not identify the little critter. Links are provided below for more information.
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∙ 14y ago
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∙ 13y agoThe positron was discovered by Carl D. Anderson in 1932.
This antimatter particle had previously been predicted by Paul Dirac, who published a paper in 1928 suggesting an antiparticle to the electron existed. At first it was thought by some to be the proton, but Robert Oppenheimer and others argued that this was not possible. It was another paper from 1932 that further identified the positron, and at about that time, Anderson made his discovery. It should be noted that Dmitri Skobeltsyn came close to discovering this particle, and it may have been Chung-Yao Chao who first observed it without being able to explain it. Anderson won a Nobel Prize for this discovery in 1936.
Links can be found below, and they will lead the curious investigator to related questions and other sources of information.
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∙ 13y agoP. A. M. Dirac
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∙ 11y agosomeone.
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What happens to an atomic nucleus when a positron is produced?
There are a handful of elements that undergo positron decay. Positron decay, called positron emission or beta decay (beta plus decay) happens in carbon-11, nitrogen-13, oxygen-15, fluorine-18, potassium-40 and iodine-121. Let's look at what's happening. In the nucleus of these isotopes, the weak force mediates the conversion of a proton into a neutron, a positron and a neutrino, and also a photon or gamma ray. In the case of carbon-11, its decay scheme will look like this: 11C → 11B + e+ + νe + 0.45 MeV The carbon-11 atom is converted into a boron-11 atom, a positron (e+), a nuetrino (ve) and the 0.45 MeV gamma ray. (The MeV is a million electron-volts.) The new element, that new atom of boron, recoils a bit from the event, and the positron and the neutrino come out at high speed (at a high kinetic energy). The gamma ray will be moving at the speed of light (for the medium through which it is passing). You'll note that since a proton in the nucleus was converted into a neutron, the atomic number changes. It goes down one. A new element forms, as was seen in this illustration. Oh, and let's not forget that since the number of protons in the nucleus went down by one, one of the electrons in the electron cloud will no longer be "held" there. It will be released and will wander off. Links can be found below for more information.
Holmium was named after what scientist?
Holmium was not named after a scientist, it was actually named after the Latin name for Stockholm.
What makes an atom And what makes what makes an atom Their has to be something that makes that and something that makes that Is it an on going process?
An atom is made of nuetrons, nutrino, anti neutrino, protons, electrons, positron, a nuecleus, and an electron cloud. They are all made from objects that are in you besides atoms.
Is the Iceman named Otzi?
Yes, that is true, but THEY named him Otzi.
What element is named after Russia?
I don't think there is any element named after Russia.
Does positron have a negative charge?
A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.A POSITron has a POSITive charge, hence the name. A positron is an anti-electron; since the electron has a negative charge, the positron has a positive charge.
What is the antimatter version of an electron?
positron
What is the anti-matter equivalent of an electron?
No. The antiparticle for the proton is called antiproton. The antiparticle for the electron is called antielectron, also known as positron.
What Is geological positron emission?
loss of a positron. 0:+1B
What is the antiparticle of a positron?
Since the positron is the antiparticle of the electron, it follows that the electron is the antiparticle of the positron.
Can annihilation of matter occur between a positron and neutron?
No, a positron cannot react with a neutron in any kind of annihilation reaction. An electron and a positron can, and the same with a neutron and an anti-neutron, but it does not occur between a positron and a neutron.
When did Positron - video game - happen?
Positron - video game - happened in 1983.
When was Positron - video game - created?
Positron - video game - was created in 1983.
What is size of positron?
Both positron and electron are point particles and therefore have zero physical size.
How is a positron different from an electron?
A positron is an electron's antiparticle. It has the same mass as an electron, but an opposite electrical charge.
Does a positron have a negative charge or does a nuetrino have a negative charge?
A positron has a positive charge, and a neutrino has a neutral charge.
What DR homi bhabha discovered?
In 1935, Indian nuclear physicist Homi J. Bhabha published a paper in the Proceedings of the Royal Society, Series A, in which he performed the first calculation to determine the cross section of electron-positron scattering.Electron-positron scattering was later named Bhabha scattering, in honor of his contributions in the field.
