Shadow of a Perpendicular Object Small 320×281 Medium 640×562 Large 1024×899 Download Tiff Original 2400×2107 | (498.2 KB) Description "To show how a shadow if a perpendicular object is to be projected on an inclined plane." -Benson, 1891 Keywords incline plane, optic, perpendicular object, shadow, sight Galleries Miscellaneous Optics Source: Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891)
