33.9 MB (4.0 MB compressed)
3688 x 3211 pixels
31.2 x 27.2 cm ⏐ 12.3 x 10.7 in (300dpi)
CHARLES D. WINTERS / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
When two pairs of polarizing filters overlap with their planes of polarization parallel to each other, light is transmitted. When one pair is rotated so that its plane of polarization is perpendicular to the other, no light is transmitted through the overlapped filters.
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