After Lord Rutherford's highly successful series of experiments with α -particles, other scientists experimented using α -particles of much higher energy. The results they got were not completely in agreement with those Lord Rutherford had found.
a. a Outline how the results using much higher-energy α -particles differed from those used by Lord Rutherford.
b. b Which of the four fundamental forces was responsible for the disagreement between the two sets of results?
c. c How do we now explain what was happening?