solar furnace

noun

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

solar furnace

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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If submitted to the heat of this appalling solar furnace, an iron poker, for instance, would vanish into invisible vapor.

The solar furnace was a rough parabola of mirrors used to focus the sun's heat on anything that it was desirable to heat.

Out of this solar furnace drifted a fleet of canoes black as charred logs against the cardinal blaze.

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

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