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heliostat
[ hee-lee-uh-stat ]
noun
- an instrument consisting of a mirror moved by clockwork, for reflecting the sun's rays in a fixed direction.
heliostat
/ ˈhiːlɪəʊˌstæt /
noun
- an astronomical instrument used to reflect the light of the sun in a constant direction
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Derived Forms
- ˌhelioˈstatic, adjective
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Other Words From
- heli·o·static adjective
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Word History and Origins
Origin of heliostat1
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Example Sentences
In a short time we might earnestly wish for a centrifugal apparatus or a heliostat.
From Project Gutenberg
Images of the sun are thrown into the observatory by an ingenious instrument run by clockwork, and called a heliostat.
From Project Gutenberg
In the absence of a heliostat the latter was the more convenient.
From Project Gutenberg
It is a good object by which to adjust my hand heliostat, which I describe below.
From Project Gutenberg
In the absence of a heliostat it is more convenient to obtain a point of light with the aid of a lens of short focus.
From Project Gutenberg
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