Unit 4 Cyberspace Lesson 3 Virtual Reality

Unit4Lesson3VirtualRealityDefinitionofvirtualrealityvirtualreality:theuseofcomputerswithsoundsandpicturesthatmakeyoufeelasifyouareinarealsituation.headsetsandspecialglovesandsuitsequippedwithsensorstheusercandirectlyinteractwitha3D(dimension)computerprogrammebymoving‘inside’it.PlayingvirtualrealitycomputergamesPossibleusesforvirtualrealitynowLearningtoflyusingvirtualrealitysimulatorVisitingvirtualmuseumsontheInternet(1)Isvirtualrealityholidayspossiblenow?(2)Dowehavevirtualuniversitiesnow?Listentothedialogueandanswertheabovequestions.ListencarefullytothedialoguebetweenTomandCathy,andtrytofillintheblankwiththerightwords.Tom:Hi,Cathy!Whatareyou______thisweekend?Cathy:Ihavealotofworktodo.IfIdon’t______________onthehistoryofInternetfornextMonday’slesson,thescienceteacher_____beangry.DoyouhaveanythingplannedforSaturdayandSunday?Tom:Iftheweatherisgood,myfamilywill__________.Wewon’tgoifitrains.IfIstayhome,I’llhelpyouwithyourprojectifyoulike.uptofinishmyprojectwillgocampingTom:IfyougototheScienceMuseum________,you’llfindlotsofgoodinformation.Cathy:Thanksforyoursuggestion.Justthink,ifwehad_______________holidays,we________haveanyproblemswiththeweather.Wewouldn’thavetospendalongtimetravellingtogettoourholiday__________.Inthefuture,we’llbeabletousemoderntechnologytogoanywherewelike.websitevirtualrealitywouldn’tdestinationsTom:Doyoumeanwe’llusethe________totravelaroundtheworld?Cathy:That’sright!Just_______it.Wewouldalsobeabletogotostudyinanyworldfamous__________wewantedto.Tom:Great!Butpersonally,Iprefer_______universitiestovirtualrealityholidays.imagineuniversitiesvirtualcomputer1.Whycan’tCathygooutthisweekend?2.WhereisTomplanningtogo?3.DoesCathyHaveaprogrammefor‘virtual’holidaysonhercomputer?Thinkofthedialogueandanswerthequestionsbelow.4.Doesshereallythinkshewillhavethechancetogoonaworldtour?5.WhatwouldTomliketodowithvirtualreality?6.WhyisCathysoexcitedaboutthetechnology?Whycan’tCathygooutthisweekend?Shehastofinishherproject.WhereisTomplanningtogo?He’llgocampingiftheweatherisgood.DoesCathyHaveaprogrammefor‘virtual’holidaysonhercomputer?No.Doesshereallythinkshewillhavethechancetogoonaworldtour?No.WhatwouldTomliketodowithvirtualreality?Hewouldliketogotoaworld-famousuniversity.WhyisCathysoexcitedaboutthetechnology?Becauseshethoughtshewouldbeabletogoanywheresheliked.HarvardUniversity•UniversityofCambridgeUniversityofOxfordTqinghuaUniversityBeijingUniversitySouthChinaNormalUniversitySouthChinaNormalUniversityRealuniversity•Advantages:1.Learnandimproveone’ssocialskills2.Attendallkindsofcolorfulactivities3.Communicatewithdifferentsortsofpeople4.……..Disadvantages:1.Havetopayalotofmoneyforstudy2.Notsafeenough3.……..Step5:Voiceyouropinion.Comparedwithrealuniversities,whataretheadvantagesanddisadvantagesofavirtualuniversity?Savemoneytobuildthewallsandteachingbuildings.Anytime,anyplaceItisconvenienttoattendMorecomfortablelearningenvironmentDon'thavetopaytuitionSavetransportationtimeLowercost:downloadtextmaterialinsteadofbuyingAdvantagesofavirtualniversity1.Can’tlearnandimprovesomeone’ssocialskills2.NonverballanguageslikegesturesareimportantcuesinFFC(Face-to-facecommunication)3.Can’tgotoavirtualuniversitywithoutspecialequipments(specialheadsetandgloves)DisadvantagesofavirtualuniversityHomework:Writeacompositionabouttheadvantagesanddisadvantagesofavirtualuniversity.什么是虚拟现实技术呢？简单地说，就是人们利用计算机生成一个逼真的三维虚拟环境，通过自然技能使用传感设备与之相互作用的新技术。它与传统的模拟技术完全不同，是将模拟环境、视景系统和仿真系统合三为一，并利用头盔显示器、图形眼镜、数据服、立体声耳机、数据手套及脚踏板等传感装置,把操作者与计算机生成的三维虚拟环境连结在一起。操作者通过传感器装置与虚拟环境交互作用，可获得视觉、听觉、触觉等多种感知，并按照自己的意愿去改变“不随心”的虚拟环境。比如，计算机虚拟的环境是一座楼房，内有各种设备、物品，操作者会如同身临其境一样，可以通过各种传感装置在屋内行走查看、开门关门、搬动物品；对房屋设计上的不满意之处，还可随意改动。CharacteristicsofImmersiveVRTheuniquecharacteristicsofimmersivevirtualrealitycanbesummarizedasfollows:Head-referencedviewingprovidesanaturalinterfaceforthenavigationinthree-dimensionalspaceandallowsforlook-around,walk-around,andfly-throughcapabilitiesinvirtualenvironments.Thevirtualworldispresentedinfullscaleandrelatesproperlytothehumansize.Realisticinteractionswithvirtualobjectsviadatagloveandsimilardevicesallowformanipulation,operation,andcontrolofvirtualworlds.Stereoscopicviewingenhancestheperceptionofdepthandthesenseofspace.Theconvincingillusionofbeingfullyimmersedinanartificialworldcanbeenhancedbyauditory,haptic,andothernon-visualtechnologies.Networkedapplicationsallowforsharedvirtualenvironments.高三英语总复习单项选择解题策略