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photointerrupter
Language
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Edit
English
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Etymology
edit
From
photo-
+
interrupter
.
Noun
edit
photointerrupter
(
plural
photointerrupters
)
An
optical
device
that acts as a
switch
when a beam of
light
is blocked by a foreign object
Categories
:
English terms prefixed with photo-
English lemmas
English nouns
English countable nouns
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