| 词条 | Zigzag |
| 释义 |
A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular. From the point of view of symmetry, a regular zigzag can be generated from a simple motif like a line segment by repeated application of a glide reflection. The origin of the word is unclear. Its first printed appearance was in French books in the late 17th century.[1] Examples of zigzagsLightning and other electrical hazards are often depicted with a zigzag design, with long downward strokes and short backward ones. The trace of a triangle wave or a sawtooth wave is a zigzag. Pinking shears are designed to cut cloth or paper with a zigzag edge, to lessen fraying. A carpenter's folding ruler can be folded to look like a zigzag. Zigzags are a basic decorative pattern used on pottery, and are often seen in the cuts which separate pieces of ravioli pasta. In sewing, a zigzag stitch is a machine stitch in a zigzag pattern. The zigzag arch is an architectural embellishment used in Islamic, Byzantine, Norman and Romanesque architecture.[2][3] The stripe on Charlie Brown's infamous yellow shirt is indeed a zigzag. See also
References1. ^[https://books.google.com/books?id=sMiRc-JFIfMC&pg=PA63&lpg=PA63&dq=zigzag+etymology&source=bl&ots=XLf0DMf_yD&sig=ybMwXwM7LQXvSCBoXZq0Xc7TgSY&hl=en&sa=X&ei=6TWRUNTUFM70igL2-ICYBA&ved=0CEQQ6AEwBA#v=onepage&q=zigzag%20etymology&f=false Google Books: "Word Origins and how we know them"] 2. ^{{cite book |first1=Terry |last1=Allen |title=A Classical Revival in Islamic Architecture |place=Wiesbaden |year=1986 |chapter=4}} 3. ^{{cite book |url=http://www.sonic.net/~tallen/palmtree/pisa.dor.htm |title=Pisa and the Dome of the Rock |edition=2nd |first1=Terry |last1=Allen |publisher=Solipsist Press |place=Occidental, California |year=2008 |format=electronic publication |isbn=0-944940-08-0|accessdate=January 28, 2012}} Bibliography
1 : Patterns |
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