Framed Prints
Framed Print of Rene Descartes, Double Rainbow, 1637
René Descartes sketch of how primary and secondary rainbows are formed. Theodoric of Freiberg is known to have given an accurate theoretical explanation of both the primary and secondary rainbows in 1307. He explained the primary rainbow, noting that when sunlight falls on individual drops of moisture, the rays undergo two refractions and one reflection before transmission into the eye of the observer. He explained the secondary rainbow through a similar analysis involving two refractions and two reflections. René Descartes 1637 treatise, Discourse on Method, further advanced this explanation. Knowing that the size of raindrops did not appear to affect the observed rainbow, he experimented with passing rays of light through a large glass sphere filled with water. By measuring the angles that the rays emerged, he concluded that the primary bow was caused by a single internal reflection inside the raindrop and that a secondary bow could be caused by two internal reflections. He supported this conclusion with a derivation of the law of refraction and correctly calculated the angles for both bows. © New York Public Library / Science Source
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Media ID 47346304
1637 17th Color Colors Colour Colours Descartes Discourse Double Light Lights Method Methods Primary Rainbow Rainbows Rene Secondary Seventeenth Spectra Spectrum Spectrums
Modern Frame 14"x12" (36x31cm)
Ready to Hang Contemporary Framed Prints adds style, protection, and a polished touch to your space - effortlessly.
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Wood effect frame, card mounted, 10x8 fade resistant photo print. Overall outside dimensions 14x12 inches (36x31cm). Environmentally and ozone friendly, 40mm wide x 15mm Polycore® moulding has the look of real wood, is durable and light and easy to hang. Biodegradable and made with non-chlorinated gases (no toxic fumes) it is efficient; producing 100 tons of polystyrene can save 300 tons of trees! Prints are glazed with lightweight, shatterproof, optical clarity acrylic (providing the same general protection from the environment as glass). The back is stapled hardboard with a sawtooth hanger attached. Note: measurements provided are estimated outer dimensions, which include both the image and the frame. While we aim to keep sizing consistent, exact dimensions may vary slightly due to differences in print size or production requirements, which may result in a variation in the overall size (up to approximately 2.5cm (1"))
These are individually made so all sizes are approximate
Estimated Image Size (if not cropped) is 24.4cm x 15.4cm (9.6" x 6.1")
Estimated Product Size is 36cm x 31cm (14.2" x 12.2")
