首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
"Art Class" What assignment does the professor give his students?
"Art Class" What assignment does the professor give his students?
admin
2012-01-14
25
问题
"Art Class"
What assignment does the professor give his students?
Narrator: Listen to part of a lecture in an art class.
Professor:
Symmetry is a concept that, yes, is expressed in the graphic arts, but to understand its fundamental Q6
nature, we must g0 beyond art. We find symmetry in nature, it reverberates in music, translates" into
choreography for dance, and, . . underlies basic mathematical formulas. But m getting ahead of Q7
myself. Let’s begin with a dictionary definition of symmetry. And I’m reading here from the American
Heritage Dictionary of the English Language: Symmetry is "exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis." And it’s also identified in the same source as "beauty as a result of balance or harmonious arrangement." So we experience beauty and harmony when symmetry of form is expressed, and the form may be interpreted by any of the senses as, uh, harmonious. But in this class we’re going to focus on symmetry in the visual arts, and that’s symmetry in a visual plane.
Let’s just look at some examples. In general, there are four types of symmetry in a plane, and a pattern is symmetrical if there’s at least one type of symmetry. So, let me show you the four types since it’s much easier to understand when you see them.
This is rotation symmetry. For this example, I used the letter R, but any object could have been used. And in the rotation, the object, in this example, the letter R, is turned around a center. In this case, there’s a right angle, but any angle could have been selected.
Reflection is...wait a minute, Okay, here’s the slide Q8
Reflection is what we see in a mirror, so every reflection has a mirror line. A reflection of the letter R is a mirror image or a backwards letter R. So, unlike the rotation around a circle, this type of symmetry flips the object over.
Here’s a translation. To translate an object means that we move it, but we do it without rotation or
reflection. It’s simply placed somewhere else on the plane. And for our purposes, we’re talking about a
flat plane. So, in this example, uh, we just moved it over a little bit.
Okay, this is my last example of symmetry and it’s referred to as glide reflection. This is the most
complex type of symmetry because it involves two steps instead of one. A glide reflection is a combination of a reflection and a translation along the direction of the mirror line. So, uh, you can see the two
steps here. First, we flip it over and then we move it somewhere else on the plane.
Of course these concepts can be generalized to include spatial symmetry as well. But, symmetry on
a flat plane involves positioning all points around the plane so their positions in relationship to each
remain constant.., although their absolute positions may be subject to change. To put it in simple
terms, if an object looks the same to you after you spin it around, flip it over, or look at it in a mirror, then that object probably has symmetry.
Symmetry is such a fundamental organizing principle that an object with symmetry can be identified Q9
... without our being able to see the, uh,... the entire object. Our brains somehow piece together the missing pieces to form a symmetrical whole. Which is really rather extraordinary, when you think about it. At some very basic level, symmetry may be part of the way that we... that we organize our thinking. And of course, that would explain why it’s so pleasing.
So now let’s return to symmetry in art. Symmetry stands out and attracts attention. It’s the system of organization for patterns. But what is a pattern? A pattern has three characteristics-a system for organization, Q10
and like we said before, this is often symmetry, but a pattern also has a basic unit, that is, uh,
it’s an object that’s the smallest discrete part of the image. As you’ll recall from the types of symmetry that we discussed, the letter R was the basic unit, Okay, finally, a pattern has repetition, which can be the repetition Of a unit or a group of units. And, uh, this repetition, in much of art, this repetition is arranged symmetrically. Just look around the classroom. Look at the tiles on the floor. Here you see a symmetrical design with four repeating tiles. The tiles were not placed at random. There’s a pattern here with all three characteristics of a pattern-first, there’s a unit, a basic unit, of four tiles; second, there’s repetition of the tiles with solid tiles surrounding them; and, uh, third, there’s symmetry.., within the four tiles, which to be specific, looks like rotation symmetry to me.
Now, for your studio assignment, I want you to draw a pattern that has as its organizing principle; a Q11
symmetrical design, It can be either in color or in black and white, but it must fit on a piece of standard
by 11-inch paper. On a second sheet of paper, I want you to identify the type of symmetry that you used. Perhaps some of you will want to experiment with several types of symmetry, but if you do, please be sure to identify each of them clearly in your narrative. For this first effort, I recommend that you stick to something relatively simple, like the tile floor. So, when you come to class next week, be ready to share your design with three other people in a group. Then I’ll collect them at the end of the hour.
选项
A、They are supposed to identify patterns in the classroom.
B、They should be prepared for a quiz on this lecture.
C、They need to go to the lab to complete an experiment.
D、They have to design a pattern that includes symmetry.
答案
D
解析
They have to design a pattern that includes symmetry.
转载请注明原文地址:https://jikaoti.com/ti/3SlYFFFM
0
托福(TOEFL)
相关试题推荐
Youshouldspendabout20minutesonQuestions14-26whicharebasedonReadingPassage2below.California’sAgeofMegafiresD
Completeeachsentencewiththecorrectending,A-G,below.Writethecorrectletter,A-G,inboxes37-40onyouranswersheet
ChooseTWOletters,A-E.Writethecorrectlettersinboxes7and8onyouranswersheet.WhichTWOpositivefunctionsaboutMin
ClassifythefollowingcharacteristicsasrelatingtoASocialScienceBMedicalScienceCBothSocialScienceandMedicalScien
Howdidthestudentgettheuniversityprospectus?WhatistheA-levelrequirementforthecourse?
Whatpercentageofthestudentsaremature?Thewebsitealsohasresponsesto______.
Whatwasthestudentsurprisedtodiscoverhehadalotof?Theprofessorsuggeststhatthestudent______.
ThespeakerworkswithintheFacultyof______
Choosethecorrectletter,A,BorC.GENERALCOURSEDETAILSWhoareinterestedinMicrobiologycourses?
BiologyCardiacMuscleHowdoestheprofessordevelopthetopicofcardiacmuscle?
随机试题
男性,71岁,吸烟患者。反复咳嗽、咳痰、气促40年,近一周咳黄痰,且黏稠不易咳出,嗜睡,夜间不眠,发病时唤之不醒而来院就诊。查体血压148/90mmHg,昏睡状,瞳孔等大,球结膜水肿,桶状胸,双肺可闻及较多干、湿啰音,心率120次/分,可闻及期前收缩,双下
一女性患阴道炎,曾因治疗其他疾病长期使用过激素类药物。微生物学检查:泌尿生殖道分泌物标本镜检可见有假菌丝的酵母型菌。你认为引起阴道炎的病原体是
经药品监督管理部门核准经营药品的品种类别将购进药品销售给药品生产企业、药品经营企业、医疗机构的药品经营企业
路面水泥混凝土配合比设计以()为指标。
期间费用是指企业一定时期内发生的不能计入产品成本,而直接计入各期损益的各项费用,主要包括()。
在风险分散过程中。随着资产组合中资产数目的增加。分散风险的效应会越来越明显。()(2008年)
资源管理器的功能有()。
简述所有权的限制。
战略数据规划的重要内容之一就是______。
Overthelastdecadetherehasbeenincreasinginterestinnewertechniquesaimedatincreasingtheaccuracyandobjectivityof
最新回复
(
0
)