![]() ![]() ![]() Finally resize by 50% back to the input size. Then flip that vertically and concatenate vertically. Then flip it horizontally and concatenate horizontally. One merges the image with its transpose using a diagonal bi-tonal mask. The number of combinations and patterns is effectively without limit.Here is a simple kaleidoscopic effect. When the box is turned or tapped, the objects inside tumble into an arbitrary grouping, and when the diffusing screen is illuminated, the sixfold or eightfold multiplication creates a striking symmetrical pattern. In this box are pieces of coloured glass, tinsel, or beads. At the other end is a thin, flat box that can be rotated it is made from two glass disks, the outer one ground to act as a diffusing screen. The mirrors are enclosed in a tube with a viewing eyehole at one end. If the mirrors are inclined at 60°, a hexagonally symmetrical pattern results from one object producing six regularly placed images.Ī simple kaleidoscope consists of two thin, wedge-shaped mirror strips touching along a common edge or of a single sheet of bright aluminum bent to an angle of 60° or 45°. ![]() Each of these mirror images is in turn reflected in the other mirror, forming the appearance of four symmetrically placed objects. If an object is placed between two mirrors inclined at right angles, an image is formed in each mirror. The kaleidoscope illustrates the image-forming properties of combined, inclined mirrors. Sold usually as a toy, the kaleidoscope also has value for the pattern designer. The kaleidoscope was invented by Sir David Brewster about 1816 and patented in 1817. The name is derived from the Greek words kalos (“beautiful”), eïdos (“form”), and skopeïn (“to view”). The design may be changed endlessly by rotating the section containing the loose fragments. Kaleidoscope, optical device consisting of mirrors that reflect images of bits of coloured glass in a symmetrical geometric design through a viewer. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.From tech to household and wellness products. This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.
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