as if Robert Hazen, Ph.D., George Mason University
The electric age can be traced back to the early 1820s in the Danish small college classroom. There, in front of a classroom full of physics students, Professor Hans Christian Orst knew that it could produce magnetic fields. And this was a turning point in the science of electromagnetism. But how did this happen?
Who was Hans Christian Orst?
Hans Christian Orst was born in 1777. He was the eldest son of a Danish pharmacist and had planned to pursue a career in his father’s pharmacy from an early age. But he was fascinated by electrical research in 1800, shortly after Volta announced his battery.
As a student, Hans Aristz excelled in languages, math, and science. He was home-schooled, but passed the entrance exams and in 1794 he enrolled at the University of Copenhagen at the age of 17. He earned a degree in everything from both pharmacology and cantilever philosophy. And after that, he was a short-lived pharmacy manager. But he eventually turned his attention to science. That was his true love.
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Oersted beginnings in electrical research
In the early 20’s, Osteed visited several well-known laboratories in Europe and learned about the research being done there. He himself gained access to these laboratories and gained prestige because he himself developed an advanced compact battery, a very powerful, but small and portable battery.
A.D. In 1804 he returned to Denmark and gave a public talk, where he gave public demonstrations on electrical phenomena. He was so successful and popular that in 1806 he was promoted to professor of interest at the University of Copenhagen because he excelled in bringing science to the public.
Shaking the needle
They believed that the various forces in nature, including the magnetic field and electricity, must somehow originate from the same source. He saw unity in the universe and its forces. So he was already looking at the connection between electricity and magnetism that other people had never seen before.
Thus, in the summer of 1820, Orstedd made his most famous discovery. He was demonstrating in front of his classrooms with electricity and magnets. He put the wire with the battery and a stream passed through that wire, and he saw the compass needle next to the hack sway.
Electrical magnetic fields
After several weeks of testing, Orst announced that it would produce an electromagnetic field that passes through a twisted path. A.D. In July 1820, he published a manuscript describing the connection between electricity and magnetism, and this was a great discovery that produced the electric magnetic fields.
Before Oersted, electricity and magnetism were seen as two completely different phenomena. They involved a wide variety of physical conditions and circumstances, but here the Ostede unified this work by showing that one event was not connected to another.
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In fact, with batteries, you can convert electrical potential into chemical potential. That is the decay of water and heat and light. Oersted has shown that you can convert that into magnetic potential. So, in the scientific world, another kind of energy change took place.
Oersted’s breakthrough quickly paved the way for the conversion of this potential into other forms of energy. Of course, the first magnetic field, but then you can also use magnetic energy to produce kinetic energy.
Only the first and most obvious of these developments was electromagnetism. You can use wire mesh. So this is a continuous long wire that you see in different electrometers. And if you close the circuit, then you can create a magnet just out of the wire loop – amazing result.
You can go one step further. You can take those wires, and you can wrap them around to create an applause, an attractive electromagnet. And so, you can only make noise by closing the circuit. So it was the principle of noise and various other loudspeakers.
By the way, the same principle was used in the telegraph. You have electromagnets that open and close circuits. If you open and close a circuit at the end with long and short pressures, those grains pass through the wire and open and close the circuits at the far end, and the same series of long and short grains are transmitted over long distances.
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And then we come to electric motors. Electric motors are the most widely used form of electromagnetism in our society.
In an engine, you simply have the effect of pushing one set of magnets against the other. In many simple electric motors – for example, the ones you find in most electric razors – you will find fixed magnets in the engine compartment, then you will have a rotor with small coils. The wire generated by electromagnets.
When the current flows through these, you get the effect of a towing force, and that rotor rotates because magnetic opposites are attracted, but the same poles push against each other. And on the contrary, with very careful alternatives such as poles, you can achieve the effect of this pressure towing rotor.
The number of applications of electromagnetism in everyday life is enormous. And all of this is based on the discovery that Orsted saw the compass injection.
Common questions about Hans Christian Osteed
Hans Christian Orstd He earned degrees in both pharmacology and cantilever philosophy.
Abandoned He was able to get an introduction to many celebrities European Laboratories Because he himself created an improved compact battery, very powerful, but very small and portable.
In front of the classrooms as he marched in electric and magnetic fields, he connected the wire to the battery and passed the current through that wire. As he did so, he noticed that the compass needle near the coil was swinging. Further Tests Electrical Flow in Discovery a Magnetic field.