Cathode Ray Tube experiment of J.J. Thomson

J.J. Thompson performed a brilliant experiment which proved that atom consisted of charged subatomic particle(s). Before his work, atom was considered to be indestructible. However, when atoms were studied in large electric fields, evidences came up indicating that they consisted of subatomic particles.

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Example Question 1

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This is the answer to the question, with a detailed solution. If math is needed, it can be done inline: \( x^2 = 144 \), or it can be in a centered display:

\[ \frac{x^2}{x+3} = 4y \]

And our final answer is 10. \( _\square \)