Who discovered electromagnetism before Øersted but dismissed it?

In summary, a scientist who was demonstrating electricity had a device that didn't work as expected near a magnet. He dismissed it as a calculation error, but if he had inquired further, electromagnetism may have been discovered earlier. Some have suggested that the scientist in question may have been Gian Domenico Romagnosi or Andrew Crosse.
  • #1
meni
4
0
In one of my old physics textbooks, there was a story about a scientist who was demonstrating electricity when it was a pretty new discovery. He had some sort of electrical device that he was showing and at one point he had it near a magnet. It didn't work as expected because of the magnet. The guy dismissed this as something being wrong in the calculations because the relationship between magnets and electricity had not yet been discovered. If he had inquired as to why this was happening instead of just assuming that his calculations had an error, electromagnetism would have been discovered earlier.

I've been googling around trying to find out who this guy was and find some reference to this story, but no luck. Does anybody know?
 
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  • #2
meni said:
In one of my old physics textbooks, there was a story about a scientist who was demonstrating electricity when it was a pretty new discovery. He had some sort of electrical device that he was showing and at one point he had it near a magnet. It didn't work as expected because of the magnet. The guy dismissed this as something being wrong in the calculations because the relationship between magnets and electricity had not yet been discovered. If he had inquired as to why this was happening instead of just assuming that his calculations had an error, electromagnetism would have been discovered earlier.

I've been googling around trying to find out who this guy was and find some reference to this story, but no luck. Does anybody know?

Hi meni,try googling Gian Domenico Romagnosi
 
  • #3

What is electromagnetism?

Electromagnetism is a physical phenomenon that describes the relationship between electrically charged particles and their interaction with magnetic fields. It is one of the fundamental forces of nature and is responsible for many everyday phenomena, such as electricity, magnetism, and light.

Who is Øersted?

Hans Christian Øersted was a Danish physicist and chemist who is credited with discovering the relationship between electricity and magnetism in 1820. He demonstrated that an electric current could create a magnetic field, paving the way for the development of electromagnetism.

Who discovered electromagnetism before Øersted?

Several scientists had observed the effects of electricity and magnetism before Øersted, including William Gilbert, who coined the term "electricity" in the 16th century, and Benjamin Franklin, who conducted experiments with electricity in the 18th century. However, Øersted was the first to demonstrate the direct relationship between electricity and magnetism.

What did Øersted dismiss in his discovery of electromagnetism?

In his initial experiments, Øersted dismissed the idea that a magnetic field could be created by an electric current. He believed that the compass needle he observed moving was simply responding to the heat generated by the electric current, rather than a magnetic field. However, after further experimentation, he concluded that the magnetic field was indeed caused by the electric current.

Why was Øersted's discovery of electromagnetism significant?

Øersted's discovery of the relationship between electricity and magnetism paved the way for the development of electromagnetism and its many applications, such as electric motors, generators, telegraphy, and modern technologies like computers and smartphones. It also laid the foundation for the development of the theory of electromagnetism by James Clerk Maxwell and Albert Einstein, which unified the laws of electricity and magnetism into a single framework.

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