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Weber (unit)

physical science Maturity 11-13 Next article →

Scientists use a special unit to measure magnetic flux. This unit is called the weber. Its symbol is Wb.

Magnetic flux is a way to measure magnetism. It tells us how much magnetism passes through a space. The weber is a very important part of the International System of Units. This system is used by scientists all over the world. It helps everyone use the same numbers for their work.

There is a special way the weber works with electricity. This comes from a rule called Faraday's law of induction. This law shows how magnetism and electricity are linked.

If the magnetic flux in a loop changes, it creates an electric force. We call this force a volt. A change of one weber every second makes one volt. You can also use the weber to find a tesla. One weber spread over one square meter is one tesla. This is called magnetic flux density.

The unit is named after a man named Wilhelm Eduard Weber. He was a physicist from Germany.

He lived from 1804 to 1891. Many groups worked to make these units official. In 1861, a group called the British Association studied electrical units. Later, a man named Giovanni Giorgi proposed using the weber. He wrote this in a manuscript in February 1902. He included notes from a man named Oliver Heaviside.

Many committees helped decide on these names. The International Electrotechnical Commission began its work in 1909. They started a group called Technical Committee 1 in 1911.

In 1935, this committee recommended the name weber. They wanted it to be the practical unit for magnetic flux. They also mentioned the maxwell as a different unit. One maxwell is a very tiny part of a weber. It is equal to 10 to the power of negative 8 webers.

The weber connects many different ideas in science. It helps define the henry, which is an electrical unit. One henry is equal to one weber per ampere.

The weber can also link to force and energy. You can express it using units like the newton or the joule. It can even be linked to the coulomb. This makes the weber a helpful tool for many different types of science. It ties magnetism to the rest of the physical world.

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