helioscope

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الإنجليزية - التركية
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الإنجليزية - الإنجليزية
An apparatus for viewing the sun without injuring the eye
A telescope or instrument for viewing the sun without injury to the eyes, as through colored glasses, or with mirrors which reflect but a small portion of light
{i} telescope for viewing the sun accommodated to protect the viewer's eye of the sun's blinding light