4
round
5
Glass, ______ , and ______ can be used for
flat
optical flats because there materials are
surfaces
___________ and can be shaped into ____________
transparent
discs with ___________ surfaces.
11
clear
12
When you examine Figure 2, you will see how
fused
an optical flat is placed on a gage block for a
quartz
flatness measurement. You can see that the
transparent
________ surface of the optical flat is in con-
lowest
tact with the mating _______ of the gage block.
linear
expansion
19
clear
fused
quartz
transparent
lowest
linear
expansion
surfaces.
Figure 2.
Optical flat and gage block mating
25
one
26
We know that light with a specific color
can be expressed in terms of its wavelength.
color
This means that a monochromatic light is one
which has one ______ , or one ________ .
33
one
34
Foldout-9 shows that the distance between
half
________________ ________ is /2, or ________
orange
micro inches apart for the color orange.
40
no
41
If you press on one side of the optical
bands
flat as shown at B in foldout-10, interference
mating
bands which are ____________ and ______________
surfaces
____________ will appear.
flat
53
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