helioscope in French
helioscope in French is hélioscope.
helioscope in French
hélioscope
(astronomy) An apparatus for viewing the Sun without harming the eye, by means of an optical filter that attenuates most of the sunlight while allowing only a small amount of the solar radiation.
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What is "helioscope" in French?
"helioscope" in French is hélioscope.
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