Teaching Physics with the Physics Suite

Edward F. Redish

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E-field and string pulses

ompare and contrast the propagation of a pulse on a string and an electromagnetic pulse. In particular, address the similarities and differences for

Note to the instructor: The issue here definitely includes a serious dose of "representation translation." Some students interpret the graph of electric field along a line as extending into space. If the "E-field vector can't fit through the slit" its intensity will be reduced. This isn't so crazy when analyzed in terms of p-prims. A smaller slit does produce a smaller intensity. "Not fitting through" is a plausible interpretation.

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Page last modified October 31, 2002: OP15