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28 February, 2023
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The precise magnetic moment of an electron

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The precise magnetic moment of an electron

By accurately measuring the magnetic moment of the electron, physicists recently created history in the field of metrology.
It is notable because it offers the Standard Model of particle physics' most accurate test to date.
According to the article, the measurement was 0.13 parts per trillion (ppt), which is 2.2 times more precise than the previous best record from 14 years ago.

What is the Standard Model?

The Standard Model (SM) is a theory that explains the characteristics of subatomic particles, categorises them into groups, and predicts how electromagnetic, weak nuclear, and strong nuclear forces affect them.
But it cannot account for gravity.
One of the most successful theories in physics, the SM predicted the presence of the Higgs boson, which was confirmed in 2012. It has also accurately predicted the characteristics of many other particles.
Since the Higgs boson is an elementary particle, it cannot be divided into more minor parts. It possesses mass but no electric charge, spin, or other intrinsic features.
The Higgs boson has a mass of around 125 billion electron volts, or 133 times that of a proton.
Despite its triumphs, the Standard Model is unable to explain a number of phenomena, including the universe's overabundance of matter compared to antimatter, dark matter, and dark energy.
Further research in this field could help us understand more about the fundamental nature of the universe and how it operates.

What is Electron’s Magnetic Moment?

Its magnetic moment, which is connected to the electron's charge and intrinsic spin, is a key characteristic of the particle.
An electron's magnetic moment is a crucial physical characteristic that helps to explain a wide range of atomic and molecular physics phenomena, including how electrons behave in magnetic fields and the magnetic characteristics of materials.

Source: The Hindu

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The precise magnetic moment of an electron

The precise magnetic moment of an electron

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Foreign Contribution Regulation Act (FCRA)- NGO

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