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Bill M. Williams (1932–2019) [1] was an American trader and author of books on trading psychology, technical analysis, and chaos theory [2] in trading the stock, commodity, and foreign exchange (Forex) markets.
An unusual occurrence of the rectangular arrow sign appears on the eastbound approach to Dead Man's Curve in Cleveland, Ohio, US, a curve so sharp that in places an arrow's stem is printed on one sign and the arrow's point is printed on another larger sign further down the road; from the driver's perspective at a distance, the two signs ...
In New Zealand, where traffic is on the left, when a road is given a green light from an all-direction stop, a red arrow can continue to display to turning traffic, holding traffic back while a pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic goes straight ahead and there is no permissive right turn allowed (for right turns).
English: Sign AD01m – Permissible Speed Indicator indicating the maximum permitted speed for trains. The arrow sign above it indicates that the speed restriction will be for the diverging route to the left. The sign can be varied to have an arrow to right or with two arrows to indicate a restriction applies to both routes.
Fractal branching of trees. Fractal analysis is assessing fractal characteristics of data.It consists of several methods to assign a fractal dimension and other fractal characteristics to a dataset which may be a theoretical dataset, or a pattern or signal extracted from phenomena including topography, [1] natural geometric objects, ecology and aquatic sciences, [2] sound, market fluctuations ...
Stack light in automated production for in-line quality inspection. Stack lights (also known as signal tower lights, indicator lights, andon lights, warning lights, industrial signal lights, or tower lights) are commonly used on equipment in industrial manufacturing and process control environments to provide visual and audible indicators of a machine's status to machine operators, technicians ...
Linear visual aids can also be used for creating in-pavement signs and messages such as lit merge arrows. Point source RPMs could be used for such signage. However, because they are installed close together, and deep within the pavement compared to linear RPMs, such usage would tend to damage the road, especially in the case of asphalt roads.
The Koch snowflake (also known as the Koch curve, Koch star, or Koch island [1] [2]) is a fractal curve and one of the earliest fractals to have been described. It is based on the Koch curve, which appeared in a 1904 paper titled "On a Continuous Curve Without Tangents, Constructible from Elementary Geometry" [3] by the Swedish mathematician Helge von Koch.