Search results
Results from the WOW.Com Content Network
The spiral stair is a type of stairway which, due to its complex helical structure, has been introduced relatively late into architecture. Although the oldest example dates back to the 5th century BC, [ 1 ] it was only in the wake of the influential design of the Trajan's Column that this space-saving new type permanently caught hold in ancient ...
A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades, and additional parts. [4] In buildings, stairs is a term applied to a complete flight of steps between two floors. A stair flight is a run of stairs or steps
The staircase is thought to be one of a kind in the country, and it was featured on a U.S. commemorative stamp. [2] The exterior winding staircase was designed by E.E. Taylor of Burlington, Iowa, and built by the Burlington Iron Works. The staircase was built outside because there was no room for one inside of the buildings. [2]
A spiral staircase in the Cathedral of St. John the Divine.Several helical curves in the staircase project to hyperbolic spirals in its photograph.. A hyperbolic spiral is a type of spiral with a pitch angle that increases with distance from its center, unlike the constant angles of logarithmic spirals or decreasing angles of Archimedean spirals.
This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible. To change this template's initial visibility, the |state= parameter may be used:
A vectorized version of File:Celtic_spiral_tile_pattern.png: Author: User:Hyacinth, converted to SVG by Bartledan : Other versions: Original PNG image: Image:Celtic spiral tile pattern.png For other Celtic "key" patterns, see File:Celtic key Cross.svg and File:Celtic key Cross 2.svg
Den gyldne spiral; Usage on el.wikipedia.org Χρυσή τομή; Usage on en.wikibooks.org User:Mateuszica~enwikibooks/God and Mathematics; Usage on en.wikiquote.org Fibonacci numbers; Usage on es.wikipedia.org Espiral dorada; Usage on et.wikipedia.org Fibonacci jada; Mustrid looduses; Usage on fa.wikipedia.org سری فوریه; بسط تیلور
480 BC: Spiral stairs (Temple A) in Selinunte, Sicily (see also List of ancient spiral stairs) [241] [242] By 407 BC: Early descriptions of what may be a Wheelbarrow in Greece. [243] First actual depiction of one (tomb mural) shows up in China in 118 AD. [244] By 400 BC: Camera obscura described by Mo-tzu (or Mozi) in China. [245]