I need every ones help about thompsons

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Thomson established the relationship between electric and magnetic fields through a specific experiment involving cathode rays. He created perpendicular electric and magnetic fields and used X-rays to eject electrons from an oil drop. By analyzing the behavior of these electrons in the simultaneous fields, he derived the relationship between the two fields. This experiment was distinct from his earlier work with cathode rays. Thomson's findings contributed significantly to the understanding of electromagnetism.
pedram
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i need to know how does thompsonfind out relation between electric field &
magnetic field.(in cathodi lamps)

e/m=1/76 x 10,00000000 c/g ??

tnx
bye
 
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actualy he didn't found iot in the cathode ray experiment ,it was another experiment conducted by him to find it.
In the experiment he created electric and magnetic field perpendiculer to each other then with the help of x-ray he knocked the electrons out of the oil drop and then by using the electric and magnetic fields simultaneous he derived the relation.
 
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