6
glass
7
Look at foldout-8. From the information
quartz
provided, you can define the coefficient of
pyrex
linear expansion as: The amount of _____________
transparent
per unit length of a substance for each ________
of increase in temperature.
13
mating
14
Since the optical flat in Figure 2 is used
to check the flatness of the gage block mating
surface
surface, the optical flat must have a _________
_____________ which is ________ .
20
transparent
21
The last optical flat feature discussed
coefficient
was its size. The table in frame 17 shows that
linear
optical flats with the ___________ listed will
expansion
have a predetermined _____________ .
surfaces
perfectly
flat
27
surfaces
28
The reflected light rays (waves) will be
reflected ________ _______ or out of phase.
light
34
35
You can reason that since there are bright
spaces between the dark _________ __________ ,
No Response Required
some of the reflected waves are in phase and
reinforce each other, while the others are ______
_____ _____________ .
42
greatest
narrow
closely
spaced
(CONTINUED ON PAGE 46)
57
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