Class 23 was cancelled except for Pre-Class Quiz #9 and the course evaluation.
| Here are the questions and answers for the quiz in pdf format. | |
The quiz has been marked and loaded into STORM. The class average was 89.7%. Please check your mark to insure accuracy.
The last homework of the term is due on Wednesday April 12 by 5 PM in the Drop Box for your tutor. Note the non-standard due date.
The homework is from the textbook, Conceptual Exercises Chapter 18: 1, 2, 6, 7, 10.
As part of our discussion of Feynman's 1949 theory of antimatter we showed two quotations.
"It is as though a bombardier flying low over a road suddenly sees three roads and it is only when two of them come together and disappear again that he realizes that he has simply passed over a long switchback in a single road." ( Feynman, Physical Review 76, (1949), 749.)
"The time itself loses sense as the indicator of the development of phenomena; there are particles which flow down as well as up the stream of time; the eventual creation and annihilation of pairs that may occur now and then is no creation or annihilation, but only a change of direction of moving particles, from past to future, or from future to past." (Nambu, Progress in Theoretical Physics 5, (1950) 82).
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