Energy device that reflects sunlight Crossword Clue
9 letters · New York Times · Saturday, October 18, 2025 · 30-Down
Appeared in 1 New York Times Crossword: Saturday, October 18, 2025.
Exact puzzle match · New York Times · October 18, 2025 · 30-Down · 9 letters
HELIOSTAT0 of 9 letters revealed
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What does this clue mean?
A device that includes a plane mirror which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the sun's apparent motions in the sky. The target may be a physical object, distant from the heliostat, or a direction in space, and is almost always stationary relative to the heliostat, so the light is reflected in a fixed direction.
noun
WordNet® (Princeton University)
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