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The Dreamachine (a contraction of Dream Machine), invented in 1959 by Brion Gysin and Ian Sommerville, is a stroboscopic flickering light art device that produces eidetic visual stimuli. Description [ edit ]
The Mikoyan-Gurevich MiG-105, part of the Spiral program, was a crewed test vehicle to explore low-speed handling and landing. It was a visible result of a Soviet project to create an orbital spaceplane .
Dreamcatcher, Royal Ontario Museum An ornate, contemporary, nontraditional dreamcatcher. In some Native American and First Nations cultures, a dreamcatcher (Ojibwe: ᐊᓴᐱᑫᔒᓐᐦ, romanized: asabikeshiinh, the inanimate form of the word for 'spider') [1] is a handmade willow hoop, on which is woven a net or web.
here is a tantalising (1964!) suggestion that the term "dream catcher" has roots in 1960s hippie culture, even if it only happened to be recorded in print around a decade later: "Nancy Winterbourne, another teacher whose classroom is based on holistic philosophies in all areas of her curriculum, has gone a step further in providing a space ...
An underwater spiral box search is a search procedure conducted by a diver swimming around a starting point on a pattern based on compass directions and increasing distances. The pattern resembles an outward spiral with straight sides and equal distances between legs swum on the same bearing.
By crossing the stitch, box can be made into a helical arrangement, often referred to as barrel or spiral, and the formed stitching becomes cylindrical as single barrel, [5] but can take on quite interesting patterns when the stitch is a larger one, such as double, triple, or quadruple barrel.
The Ulam spiral or prime spiral is a graphical depiction of the set of prime numbers, devised by mathematician Stanisław Ulam in 1963 and popularized in Martin Gardner's Mathematical Games column in Scientific American a short time later. [1] It is constructed by writing the positive integers in a square spiral and specially marking the prime ...
For <, spiral-ring pattern; =, regular spiral; >, loose spiral. R is the distance of spiral starting point (0, R) to the center. R is the distance of spiral starting point (0, R) to the center. The calculated x and y have to be rotated backward by ( − θ {\displaystyle -\theta } ) for plotting.