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Topic: Radial symmetry


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In the News (Thu 18 Jul 19)

  
  Symmetry (biology) - Wikipedia, the free encyclopedia
The elaborate patterns on the wings of butterflies are one example of biological symmetry.
This type of symmetry is especially suitable for sessile animals such as the sea anemone, floating animals such as jellyfish, and slow moving organisms such as sea stars (see special forms of radial symmetry).
Animals in the phyla cnidaria and echinodermata exhibit radial symmetry.
en.wikipedia.org /wiki/Radial_symmetry   (606 words)

  
 Learn more about Symmetry in the online encyclopedia.   (Site not responding. Last check: 2007-11-01)
Symmetry is a characteristic of geometrical shapes, equations and other objects; we say that such an object is symmetric with respect to a given operation if this operation, when applied to the object, does not appear to change it.
Symmetry is used in the design of the overall floor plan of buildings as well as the design of individual building elements such as doors, windows, floors, frieze work, and ornamentation; many facades adhere to bilateral symmetry.
Symmetry is also an important consideration in the formation of scales and chords, traditional or tonal music being made up of non-symmetrical groups of pitches, such as the diatonic scale or the major chord.
www.onlineencyclopedia.org /s/sy/symmetry.html   (1201 words)

  
 Symmetry
For a common notion of symmetry in Euclidean space, G is the Euclidean group E(n), the group of isometries, and V is the Euclidean space.
A glide reflection symmetry (in 3D: a glide plane symmetry) means that a reflection in a line or plane combined with a translation along the line / in the plane, results in the same object.
Symmetry does not by itself confer beauty to an object — many symmetrical designs are boring or overly challenging, and on the other hand preference for, or dislike of, exact symmetry is apparently dependent on cultural background.
www.brainyencyclopedia.com /encyclopedia/s/sy/symmetry.html   (2856 words)

  
 Radial symmetry - the free encyclopedia   (Site not responding. Last check: 2007-11-01)
In biology, radial symmetry is a property of some multicellular organisms.
Any cut through the center of a radially symmetric organism, with the plane of the cut going from the top to the bottom (dorsal to ventral), results in roughly equal halves in terms of organs and body parts.
Starfish possess a variant of radial symmetry in which orientations of 72 degree rotation are considered equivalent; this is known as
www.free-web-encyclopedia.com /default.asp?t=Radial_symmetry   (100 words)

  
 AllRefer.com - symmetry, biological (Zoology: General) - Encyclopedia
Radial, or line, symmetry, as exemplified by a cone or a disk that is symmetrical about a central axis, is especially suitable for sessile or floating animals.
Radial symmetry is seen in sessile organisms such as the sea anemone, floating organisms such as jellyfish, and slow-moving organisms such as sea stars, or starfish.
Many jellyfish have four radial canals and are said to have tetramerous radial symmetry; sea stars, with five arms, have pentamerous radial symmetry.
reference.allrefer.com /encyclopedia/S/symmetryb.html   (463 words)

  
 Symmeter.com - Symmetry Measurement and Analysis Tools
The term bi-lateral symmetry refers to side-to-side symmetry, as if a mirror line was placed on the image, typically (but not necessarily) in a top to bottom fashion.
Radial symmetry is a measure of the image as if it were divided into a series of pie-shaped segments and each segment were compared to its opposite segment.
In effect, when measuring radial symmetry, the image is divided into a number of segments, sort of like equally sized pie slices in a pie chart.
www.symmeter.com /concept.htm   (464 words)

  
 radial symmetry   (Site not responding. Last check: 2007-11-01)
In biology, radial symmetry is a characteristic that is used to help classify multicellular organisms.
Organisms with bilateral symmetry, on the other hand, have two orientations: dorsal-ventral, as well as anterior-posterior.
Jellyfish and ctenophores are the only animals with true radial symmetry; echinoderms have partial radial symmetry.
www.wapipedia.com /wikipedia/mobiletopic.aspx?cur_title=radial_symmetry   (159 words)

  
 Body Symmetry
Webster defines symmetry as "..correspondance in size, shape, and relative position of parts on opposite sides of a dividing line...about a center or axis." Symmetry implies a balance or equality of shape and proportion on opposite sides of a plane through an object.
An object displaying radial symmetry is one where all planes passing through a central (usually vertical) axis have a mirror image on the other side.
Radial symmetry — The vast majority of organisms displaying radial symmetry are anchored to the substrate (often referred to as a sessile lifestyle, sort of like couch potatoes).
science.kennesaw.edu /biophys/biodiversity/animalia/symmetry.html   (743 words)

  
 symmetry, biological - HighBeam Encyclopedia
SYMMETRY, BIOLOGICAL [symmetry, biological] similarity or balance between parts of an organism so that when a straight cut is made through a point or along a line, equal, mirror-image halves are formed.
The use of (symmetry) group theory as a predictive tool for studying bimanual coordination.
Bilateral symmetry and the competitive standard attained in elite and sub-elite sport.
www.encyclopedia.com /html/s/symmetryb.asp   (629 words)

  
 Highbeam Encyclopedia - Search Results for radial velocity   (Site not responding. Last check: 2007-11-01)
radial velocity RADIAL VELOCITY [radial velocity] in astronomy, the speed with which a star moves toward or away from the sun.
A parallel coextrusion technique for simultaneous measurements of radial die swell and velocity profiles of a polymer melt in a capillary rheometer.
Experimental studies on radial extrudate swell and velocity profiles of flowing PS melt in an electro-magnetized die of an extrusion rheometer.
www.encyclopedia.com /articles/10736.html   (472 words)

  
 symmetry - definition by dict.die.net
symmetry n 1: (mathematics) an attribute of a shape; exact correspondence of form on opposite sides of a dividing line or plane [syn: symmetricalness, correspondence, balance] [ant: asymmetry] 2: balance among the parts of something [syn: proportion] [ant: disproportion]
A due proportion of the several parts of a body to each other; adaptation of the form or dimensions of the several parts of a thing to each other; the union and conformity of the members of a work to the whole.
Respective symmetry, that disposition of parts in which only the opposite sides are equal to each other.
dict.die.net /symmetry   (160 words)

  
 Radial symmetry   (Site not responding. Last check: 2007-11-01)
In biology, radial symmetry is a characteristic that is used tohelp classify multicellular organisms.
Organisms with radial symmetry only have a single orientation: dorsal-ventral (or anterior-posterior, there is nodifferentiation).
Jellyfish and ctenophores are the only animals with true radial symmetry; echinoderms have partialradial symmetry.
www.therfcc.org /radial-symmetry-32726.html   (121 words)

  
 LiveScience.com - Symmetry in Nature: Fundamental Fact or Human Bias?
In biology, recent studies have found that humans and other animals are highly attuned to symmetry in each other and often use it to gauge beauty and health during mate selection.
Symmetry is also prevalent in the physical sciences and is woven into the very laws that govern our universe.
Symmetry is so integral to the way the universe works that Albert Einstein used it as a guiding principle when he devised his General Theory of Relativity.
www.livescience.com /othernews/051221_symmetry_nature.html   (1394 words)

  
 Radial Symmetry Famous Art - and more   (Site not responding. Last check: 2007-11-01)
Radial Symmetry Famous Art - The fulton art association held its annual show saturday, may 21 and sunday, may 22 in the fulton municipal building.
The relationship between art and science is a long and treasured one, reflected in the timeless appeal of proportional theories such as the golden mean and the fibonacci series of numbers.
Radial Symmetry Famous Art - Nearing 80, john berger, a british resident of france, is a towering writer though little known on these shores.
art-8.627arts.com /Radial-Symmetry-Famous-Art.html   (525 words)

  
 North Texas Institute for Educators on the Visual Arts   (Site not responding. Last check: 2007-11-01)
Radial symmetry or balance is a variation of balance in which the elements of composition are regularly arranged and radiate from a central point or axis.
In this lesson, students will create an original mandala design using radial symmetry, and in doing so, will become familiar with geometric concepts of symmetry while practicing with tools such as the ruler, the compass, and the protractor.
Have students list and describe additional examples of radial symmetry they observe in nature as well as human-made ones such as bicycle tires, car tires, the plates they eat from, and other sources.
www.art.unt.edu /ntieva/news/vol_9/issue3/mandela.htm   (732 words)

  
 Investigating symmetry.
Symmetry refers to, "the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point." If you look at the word in the dictionary, you will notice a list of definitions for subjects as diverse as geometry, botany, physiology, chemistry, and geology.
Symmetry can refer to two dimensional as well as three dimensional objects.
Radial symmetry is when all segments are equal that radiate from a point.
www.msnucleus.org /membership/html/k-6/as/scimath/2/assm2_7a.html   (408 words)

  
 Section 8: Lateral Symmetry of Shoots
Shoots with radial symmetry have leaves borne with equivalent angles of divergence.
This type of symmetry is common in orthotropically growing shoots and those having spiral phyllotaxis.
The lateral branches of this tree are plagiotropic and have dorsiventral symmetry.
botit.botany.wisc.edu /courses/structure_cd/labs/B8/8.htm   (714 words)

  
 Evaluating interface aesthetics: a measure of symmetry (27 Feb 2006)
Symmetry is one of the most fundamental principles in design.
The aim of this paper is to solve the problem of an automatic detection of axial and radial symmetry or lack of it in published documents.
We present mathematical proof that the measure of symmetry we introduce is exact and accurate.
www.usabilityviews.com /uv011009.html   (195 words)

  
 animal radial symmetry (animal radal symmetry) information.
Organisms in the animal kingdom with symmetry exhibit either radial or bilateral symmetry.
Radial symmetry is seen in sessile organisms such as the sea anemone,..
As Figure 26-5 on that page shows, if an animal has radial symmetry, then its body plan is a little bit like that of a bicycle wheel.
www.wide-find.com /a/animal_radial_symmetry.html   (156 words)

  
 Symmetry Quiz
It would then be possible to draw a line through a picture of the object and each side would be exactly the same as the other side.
The type of symmetry in which there is a center point from which many different parts can extend from.
A line of symmetry could be drawn vertically through the number 6.
www.mcwdn.org /Geometry/SymmetryQuiz.html   (116 words)

  
 Animals Radial Symmetry   (Site not responding. Last check: 2007-11-01)
symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out...
Radial symmetry means that the body is a hub, like a bicycle wheel, and tentacles are spokes coming out...
Animals with radial symmetry often spend their adult lives fastened in one place, like the sea...
www.motiv84u.com /2/92/animals-radial-symmetry.html   (415 words)

  
 RADIAL SYMMETRY   (Site not responding. Last check: 2007-11-01)
It refers to the fact that it's possible to make any cut through the center of the organism, with the plane of the cut going from the top to the bottom, and result in roughly equal halves in terms of organs and/or body parts.
Organisms with radial symmetry only have a single orientation: dorsal-ventral.
It is licensed under the GNU free documentation license.
www.yotor.org /wiki/en/ra/Radial%20symmetry.htm   (128 words)

  
 Radial Symmetry
The property of symmetry about an axis; "the starfish illustrates radial symmetry".
(Multi-layered circular pies exhibit radial symmetry.) Organisms with radial symmetry only have 1 orientation: dorsal-ventral (or anterior-posterior, there is no differentiation).
Translations for "radial symmetry"; alternative meanings/domain in parentheses.
www.websters-dictionary-online.org /definition/english/ra/radial+symmetry.html   (352 words)

  
 Morris Museum of Art: Education   (Site not responding. Last check: 2007-11-01)
Radial symmetry: the condition of having similar parts regularly arranged around a central axis.
Explain that there is radial symmetry in nature as well.
Because the design will have radial balance, the colors must be the same in every section.
www.themorris.org /education/teacher/minilesson_mathandart_after.htm   (531 words)

  
 Radial Symmetry Stained Glass - Big Stained Glass Guide   (Site not responding. Last check: 2007-11-01)
the axis of symmetry around which the radial symmetry of the body is organized.
The radial symmetry of the Canon Wheel refers to the fact that the sub-divisions on...
This pattern of radial symmetry allows us to use the odd numbered magic squares as...
www.bigstainedglassguide.com /radial-symmetry-stained-glass.html   (548 words)

  
 Petal   (Site not responding. Last check: 2007-11-01)
The petals are usually the most conspicuous parts of a flower, and the petal whorl or corolla may be either radially or bilaterally symmetrical.
Many flowers are symetrical in only one plane (i.e., symmetry is bilateral) and are termed irregular or zygomorphic (meaning yoke- or pair-formed).
In irregular flowers, other floral parts may be modified from the regular form, but the petals show the greatest deviation from radial symmetry.
www.backyardagora.com /glossary/petal.htm   (315 words)

  
 Lesson by Patti Caiola: Radial Name Design
Radial Symmetry: symmetry of circular objects: symmetry in which something can be divided into two identical halves by a line or plane passing through a central point or axis at any angle
Radial balance is any type of balance based on a circle with its design extending from its center.
Use a specific pattern of radial colors to create a pattern that begins at the center and expands completely to the edges of the paper so there is no white showing.
www.princetonol.com /groups/iad/lessons/elem/Patti-name.htm   (656 words)

  
 Symmetry   (Site not responding. Last check: 2007-11-01)
All examples of symmetry used here are forms of radial symmetry.
The individual components within the radial symmetry are usually bilaterally symmetrical, but the Symmetry program allows for non-symmetrical components, generally known as swastikas.
Special versions of the symmetry program were used to construct designs used in Fibonacci spirals and 3-D images.
chromatism.net /chromat/symmetry.htm   (246 words)

  
 Symmetry   (Site not responding. Last check: 2007-11-01)
Symmetry is when a figure has two sides that are mirror images of one another.
One is bilateral symmetry in which an object has two sides that are mirror images of each other.
This is where there is a center point and numerous lines of symmetry could be drawn.
www.mcwdn.org /Geometry/Symmetry.html   (163 words)

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