solar furnace

American  

noun

1. a furnace using sunlight concentrated by concave mirrors as the direct source of heat.

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solar furnace British  

noun

1. a furnace utilizing the sun as a heat source, sunlight being concentrated at the focus of a system of concave mirrors

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Example Sentences

Beaming from an almost cloudless afternoon sky , our solar furnace showed the welcome warmth still available from its direct rays in mid-October.

From Washington Post

There is plenty of innovation too, from Louis XIV's "ardent mirror", prefiguring the solar furnace, to Madame de Châteauroux's "flying chair", actually the first lift.

From The Guardian

The dark interspaces may represent matter which has become cooled and darkened through having parted with its heat and light, and is falling back again into the solar furnace.

From Project Gutenberg

"Has the power crew set up the solar furnace?" he asked.

From Project Gutenberg

He used the solar furnace that had made the silicone wool to smelt it.

From Project Gutenberg