André-Marie Ampère --1775-1-20--1836-6-10

 Life of Ampere

The name is André-Marie Ampère to be exact. He is born in Lyon, France.

He gained a better understanding of electromagnetic phenomena and is considered one of the founders of electromagnetics, even though he was not well organized at the time. Ampere’s father seems to have been a serious court worker, but he was decapitated during the French Revolution by overstated his opinion. Ampere is said to have been very shocked. The revolution left a lot of scars, didn’t it?

The unit ampere of electric current is named after Ampere. Also, Ampere’s name is famous for the right-handed screw rule. (Sometimes the right-handed screw law is called Ampere’s law.) The content is an analogy using a screw that advances by turning it in the general right direction (clockwise direction).

Job of Ampere

When I pick up the screw, the image of the screw thread is the image of a magnetic field, and the direction in which the screw advances is the direction in which the current advances.

Another image is that when a direct current flows, the pointed screw is in the direction of electricity flow and the magnetic field is generated in the screw thread direction.

Ampere’s analogy seems very intuitive and straightforward. It’s not an incomprehensible explanation that scholars tend to fall into, even if it’s “self-righteous,” but it’s a way of telling the fact that you can instantly be impressed with “Oh.”

Ampere also used two wires in parallel to convey this fact, and showed an example in which the wires attracted and repelled when the directions of electricity flow were the same or opposite.

This fact is clear from the image of the direction in which the magnetic field is generated when electricity is applied.

In an era when electromagnetics was not well developed, Ampere showed clear facts in an era when publicly conscious and easy-to-understand experimental methods were required.

Imagine the magnetic field that occurs around a conductor.

I think it’s still a wonderful experiment that can show children how the electric current works.

You can imagine how the invisible “magnetic field” actually behaves.

Ampere visibly shaped the magnetic field in an era when the reality of the magnetic field was not clearly understood. It was a big job. The theory develops further from there in posterity.