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ROUEN, NORMANDY, FRANCE - spring 2024: Notre-Dame Cathedral, front view of the west portal, the building is complete and perfectly rectilinear
Luminous flux. Light and shadow. Light and shadow experiment. Light source and curtain. Full and partial shade. Light intensity. Physics, science, chemistry, mathematics.
Abstract  vector background. Square texture. Banner, poster, flyer, card, cover, brochure pattern design. Technology illustration.
vector seamless pattern of geometric shapes on white background, in the style of memphis design, geometric shapes and patterns, red and black, rectilinear forms
A physical experiment to study the topic is the propagation of light in space, the law of the straightforward propagation of light is the creation of a shadow.

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Urban blues: Abstract geometric illustration of skyscrapers seen from the airImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/urban-blues-abstract-geometric-illustration-skyscrapers-236016208">Image used under license from Freestock.com</a>
Plaza on campus of community collegeImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/plaza-campus-community-college-31984051">Image used under license from Freestock.com</a>
Multicolored mosaic abstract with squares and rectangles softened by the "snow" effect of pointillismImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-mosaic-abstract-squares-rectangles-softened-232136152">Image used under license from Freestock.com</a>
Abstract illustration of multicolored metropolitan business district seen in bird's-eye viewImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-illustration-multicolored-metropolitan-business-district-235767148">Image used under license from Freestock.com</a>
Geometric abstract: Stacks of solid bars of various heights and colors on light blue backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/geometric-abstract-stacks-solid-bars-various-298107029">Image used under license from Freestock.com</a>
Splashy mosaic abstract of squares overlapping for 3-D effect, with tropical pastelsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/splashy-mosaic-abstract-squares-overlapping-3d-243846649">Image used under license from Freestock.com</a>
Bright multicolored geometric mosaic abstract of segmented parallel stripes on gold backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/bright-multicolored-geometric-mosaic-abstract-segmented-249331783">Image used under license from Freestock.com</a>
Kaleidoscopic multicolored mosaic abstract of multiplicity and complexityImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/kaleidoscopic-multicolored-mosaic-abstract-multiplicity-complexity-231771421">Image used under license from Freestock.com</a>
Industrial-style abstract with multicolored columns of rectangles separated by parallel gray stripesImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/industrialstyle-abstract-multicolored-columns-rectangles-separated-215444008">Image used under license from Freestock.com</a>
Geometric abstract illustration of skyscrapers of various colorsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/geometric-abstract-illustration-skyscrapers-various-colors-235768012">Image used under license from Freestock.com</a>
Mosaic abstract illustration of city lights at night, with rounded squares overlapping for 3-D effect, for themes of variation and multiplicityImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/mosaic-abstract-illustration-city-lights-night-282472871">Image used under license from Freestock.com</a>
Variety in uniformity: Bold multicolored mosaic of squares of the same size, for decoration and backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/variety-uniformity-bold-multicolored-mosaic-squares-235875076">Image used under license from Freestock.com</a>
Parti-colored abstract of rows and columns of rectangles for decoration and backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/particolored-abstract-rows-columns-rectangles-decoration-313468775">Image used under license from Freestock.com</a>
Kaleidoscopic mosaic abstract with a grid of squares that contain rectangles of various colors for a look of urban multiplicityImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/kaleidoscopic-mosaic-abstract-grid-squares-contain-226595623">Image used under license from Freestock.com</a>
Abstract multicolored mosaic with urban motifImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-multicolored-mosaic-urban-motif-226471915">Image used under license from Freestock.com</a>
Abstract mosaic with overlapping squares and rectangles of various colorsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-mosaic-overlapping-squares-rectangles-various-215548576">Image used under license from Freestock.com</a>
Abstract mosaic multicolored illustrationImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-mosaic-multicolored-illustration-224893876">Image used under license from Freestock.com</a>
Reductionist abstract mosaic of squares and rectangles, with areas of separation, on blackImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/reductionist-abstract-mosaic-squares-rectangles-areas-244484698">Image used under license from Freestock.com</a>
Multicolored abstract two-dimensional mosaic of solid squares of uniform size and various colors on a simple gridImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-abstract-twodimensional-mosaic-solid-squares-244482109">Image used under license from Freestock.com</a>
Mosaic abstract with tropical colorsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/mosaic-abstract-tropical-colors-230244835">Image used under license from Freestock.com</a>
Geometric multicolored mosaic of squares containing abstract polygons as an illustration of random multiplicity within an orderly arrangementImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/geometric-multicolored-mosaic-squares-containing-abstract-229973470">Image used under license from Freestock.com</a>
Multicolored blocky abstract for themes of diversity and interconnectednessImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-blocky-abstract-themes-diversity-interconnectedness-244657840">Image used under license from Freestock.com</a>
Multicolored mosaic for decoration and backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-mosaic-decoration-background-213579223">Image used under license from Freestock.com</a>
Straightness versus waviness: Multicolored abstract of duality and coexistenceImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/straightness-waviness-multicolored-abstract-duality-coexistence-237054130">Image used under license from Freestock.com</a>
Split background, half green half yellow, with overlay pattern of black tiles, for themes of duality or commonalityImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/split-background-half-green-half-yellow-325384931">Image used under license from Freestock.com</a>
Geometric abstract illustration of parallel solid bars of various heights and colors on yellowImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/geometric-abstract-illustration-parallel-solid-bars-227608249">Image used under license from Freestock.com</a>
Multicolored abstract of stripes and columns with architectural effectImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-abstract-stripes-columns-architectural-effect-313468727">Image used under license from Freestock.com</a>
Multicolored geometric abstract illustration of parallelism, with stripes of several lengths and various colors on wine red, for decoration and backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-geometric-abstract-illustration-parallelism-stripes-253496326">Image used under license from Freestock.com</a>
Abstract mosaic with earth tones of the American Southwest, for decoration and backgroundImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-mosaic-earth-tones-american-southwest-262730432">Image used under license from Freestock.com</a>
Abstract of half-and-half mosaic divided by a tall sine waveImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/abstract-halfandhalf-mosaic-divided-tall-sine-237439828">Image used under license from Freestock.com</a>
Multicolored abstract grid of city lights with three-dimensional effectImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/multicolored-abstract-grid-city-lights-threedimensional-235065778">Image used under license from Freestock.com</a>
Modernistic abstract mosaic of squares and rectangles overlapping for the effect of a bright, multicolored maze of urban geometryImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/modernistic-abstract-mosaic-squares-rectangles-overlapping-232824460">Image used under license from Freestock.com</a>
Varicolored abstract mosaic of overlapping squares and rectanglesImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/varicolored-abstract-mosaic-overlapping-squares-rectangles-244631923">Image used under license from Freestock.com</a>
Bright kaleidoscopic mosaic of multicolored squares and rectangles in rows and columnsImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/bright-kaleidoscopic-mosaic-multicolored-squares-rectangles-227840698">Image used under license from Freestock.com</a>