Table 18.2 Categories of representation of the light diffraction pattern and graphs intensity vs
position
Cat Example
Description
DA
Experimental graph.
Characterized by a
central peak with
I > 2I 1
DB
Graph characterized
by peaks of equal/
almost equal intensity
(the central maximum I < 2xI 1 )
DC
Bell shape graph,
characterized by a
single peak covering
all peaks. Within this
category also parabolic graphs where
the intensity of light
suddenly becomes
0 beyond a certain
distance from the
central maximum
(continued)
18 Student Learning Paths from Exploration of Optical Diffraction with Online. . .
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