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The Atom
Beginning of paper
AP Physics Period 2
In the spring of 1897 J.J. Thomson demonstrated that the beam of glowing
matter in a cathode-ray tube was not made of light waves, as "the almost
unanimous opinion of German physicists" held. Rather, cathode rays were
negatively charged particles boiling off the negative cathode and attracted to
the positive anode. These part ....
Middle of paper
...." like raisins in a pudding, was a
hybrid: particulate electrons and diffuse remainder. It served the useful
purpose of demonstrating mathematically that electrons could be arranged in a
stable configurations within an atom and that the mathematically stable
arrangements could account for the similarities and regularities among chemical
elements .... |
| Word count: 1577 |
Page count: 6 |
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