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Title: Isaac Newton's reflecting telescope, 1668. Artist: Isaac Newton
Caption: Isaac Newton's reflecting telescope, 1668. Isaac Newton (1642-1727), English scientist and mathematician built the first ever reflecting telescope in 1668. The instrument featured a polished metal speculum (mirror) that magnified 25 times.
Technique/material: wood
Credit: Album / Ann Ronan Picture Library/Heritage-Images
Image size: 3260 × 3223 px | 30.1 MB
Print size: 27.6 × 27.3 cm | 1283.5 × 1268.9 in (300 dpi)