Linear and rotational motion of electric charges in a magnetic field brought a revolution in the world science and technology.Discuss comprehensively.
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Linear and rotational motion of electric charges revolution in the world science
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- Both Electricity and Magnetism are known for quite 2000 years. However, it had been only about 200 years ago, in 1820, that it had been realized that they were intimately related.
- During a presentment within the summer of 1820, the Danish physicist Hans Christian Oersted noticed that a current in an exceedingly straight wire caused an obvious deflection during a nearby compass needle.
- He investigated this phenomenon. It In noticeable when this is large and therefore the needle sufficiently near the wire in order that the earth’s field could also be ignored. Reversing the direction of this reverses the orientation of the needle.
- The deflection increases on increasing this or bringing the needle closer to the wire. Iron filings sprinkled around the wire arrange themselves in concentric circles with the wire because of the centre.
- Oersted concluded that moving charges or currents produced a flux within the surrounding space. Following this, there was intense experimentation.
- In 1864, the laws obeyed by electricity and magnetism were unified and formulated by James Maxwell in the 19th century and radio waves by Marconi, a motivating scientific and technological progress that has taken place within the 20th century.
- This is often because of our increased understanding of electromagnetism and therefore the invention of devices for the assembly, amplification, transmission, and detection of electromagnetic waves.
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