Three-dimensional space

Definition

Three-dimensionalspacereferstothespacewherethepositionofapointisdeterminedbythreecoordinates,withlength,widthandheight.

Spaceandtimearetheexistenceformsofmovingmatter.Spaceistheextensionoftheexistenceofmatter,andtimeisthecontinuityandsequenceofthemovementofmatter.Likematter,spaceandtimeareobjectiveexistencesthatdonotdependonhumanconsciousnessandareeternal.Spaceandtimeareinseparablefromthemovingmatter.Thereisnospace-timeseparatedfromthemovementofmatter,andthereisnomatterthatdoesnotmoveintime-space.Buttimeandspacedescriptionandmeasurementarerelative.Thephysicalmotionofnaturalsciencedescribesspaceandtimebyselectingareferenceframe.Thethree-dimensionalspacedirectlyreflectstheintuitivethinking'sgraspoftheshape,size,distance,depth,directionandothercharacteristicsofexternalobjects.

AtlasofStringTheoryModels(6photos)

Introduction

Weavesomerubbercordsintoanetaccordingtothepatternofwarpandweft,andflattenit.,Wecanapproximateitasatwo-dimensionalplane,andthenputasmallballonthenet,andtherubbernetisrecessedunderthegravityoftheball,whichformsathree-dimensionalspace.

"Dimension"heremeansdirection.Thelinearpatternestablishedbyonedirectionisaone-dimensionalspace,andtheone-dimensionalspaceisunidirectional.Theplanemodelestablishedbytwodirectionsisatwo-dimensionalspace,andthetwo-dimensionalspaceisbidirectional.Inthesameway,thethree-dimensionalspaceisthree-dimensionalandthree-dimensional,whichisestablishedbytheinfiniteextensionofthreedirections.

The"four-dimensionalspace"mentionedindailylifemostlyreferstotheconceptof"four-dimensionalspace-time"mentionedbyEinsteininhis"GeneralRelativity"and"SpecialTheoryofRelativity."AccordingtoEinstein'sconcept,ouruniverseiscomposedoftimeandspace.Therelationshipbetweentimeandspaceisthatatimeaxisisaddedtothestructureofspacecomparedtothethreeaxesoflength,width,andheightofordinarythree-dimensionalspace,andthistimeaxisisanaxisofimaginaryvalues.

Four-dimensionalspaceisaconceptoftimeandspace.Simplyput,anyfour-dimensionalspacecanbecalleda"four-dimensionalspace".

AccordingtoEinstein'stheoryofrelativity:thethree-dimensionalspacewefaceinourlivesplustimeconstitutetheso-calledfour-dimensionalspace.Sincethetimewefeelontheearthisveryslow,wewillnotobviouslyfeeltheexistenceoffour-dimensionalspace,butonceweboardaspacecraftorreachtheuniverse,thespeedofourframeofreferencebeginstoincreaseorbegintoapproach.Atthespeedoflight,wecanfindthechangesintimecomparatively.Thereisapotentialplacehere,andtheenergyofmatterwillchangewiththechangeofspeed.Therefore,thechangeandcontrastoftimearebasedonthespeedofmatterastheframeofreference.Thisiswhytimeisoneoftheelementsoffour-dimensionalspace.

Application-3Dtechnology

3DTV

3DistheabbreviationofThree-Dimensional,whichmeansthree-dimensionalgraphics.Afterbeingcultivatedinthemarketin2010,3DTVhasnotonlyexceeded80%ofconsumers'awareness,butitstechnologyhasbecomeincreasinglymature,anditspriceshavebecomemorecommonplace.Withtheincreasingpriceof3DTVsandtheimprovementof3Dtechnology,thesalesof3DTVswillcontinuetorise,and3Dfunctionswillbecomethestandardconfigurationofmainstreammid-to-high-endcolorTVs.ManufacturerssuchasSharp,LG,Konka,Sony,Samsung,Skyworth,TCL,andChanghonghavelaunchednew3DTVs.3DTVshavethemajesticmomentumof"unifyingtheriversandlakes".Basically,domesticandforeignTVbrandshaveproduced3DTVs.ThetrialbroadcastofChina's3Dpilotchannelhasbeenlaunchedinmorethan180regionsacrossthecountry,openingupthemarketfor3DTVs.

Three-dimensional space

Chromatic3Dtechnology

Anaglyph3Dusesglassescomposedoftwocomplementarycolorfilters,whichcanbered-blue,red-greenorred-cyanfiltersColor3Dglasses,takingredandbluecolorfilterglassesasanexample,thecontentacquisitionendusestwocameraswithredandbluefiltersatthefrontofthelenstoshootthesamesceneimage,andgetaredimagesignalandablueimagesignal.Thetwosignalsaresuperimposedintoonesignalandsenttothereceivingenddisplaytodisplayredandblueimages.Theleftandrightglassesofthestereoglassesareredorbluefilters,whichmakethelefteyewearingtheredfilteronlyseetheredimage,andtherighteyewearingthebluefiltercanonlyseetheblueTheimagesarefusedbythebraintoformstereovision.Thiskindof3DTVimagingtechnologyhasgoodcompatibilityandwasoncealltherageinthefieldof3DTVtechnology.However,theexistingproblemsarealsoveryobvious:thecolorinformationisgreatlylostduetotheuseoffilterstowatchTVimages;anotherproblemistheinterferencecausedbythe"cross-color"phenomenonofthecolorTVitself;atthesametime,duetotheincidentspectrumoftheleftandrighteyesInconsistent,easytocausevisualfatigue.

Polarization3Dtechnology

Polarization(Polarization)3Dtechnologyisalsocalledpolarization3Dtechnology.Polarizationstereoglassesusepolarizationdirectionsperpendiculartoeachotherfortheleftandrighteyes.Lenses,onelensusesverticalpolarization,andtheotherlensuseshorizontalpolarization.Thedisplayprojectsthecorrespondingpolarizedlight,sothatthetwoeyescanviewtheleft-viewandright-viewimagesrespectively,andthebrainmergesintoastereoscopicimage.Thedisadvantageofthismethodisthatwhentheviewer'sheadistilted,thepolarizedlenscannotfilteroutthepolarizedlightorthogonaltoit,andtheimageofoneviewleaksintotheotherview,andtheviewerwillfeeluncomfortable.OnLCDTVs,theapplicationofpolarized3DtechnologyrequiresTVstohavearefreshrateof240Hzorhigher.

Shutter3Dtechnology

Shutter3Dtechnology,EnglishisActiveShutter3D,usedwithactiveshutter3Dglasses.Thiskindof3DtechnologyisthemostwidelyusedonTVsandprojectors,withrelativelymoreresources,andexcellentimageeffects.Itispraisedandadoptedbymanymanufacturers,butitsmatching3Dglassesaremoreexpensive.The3DTVslaunchedbybrandsincludingLG,Samsung,Panasonic,andSkyworthalluseshutter3Dtechnology.

Althoughitiscommonlyused,theshuttertypealsohassomeshortcomings:

First,theproblemofglasses,firstofall,glassesneedtobeequippedwithbatteries,butglassesmustbeworntoappreciateForTVprograms,theelectromagneticwavesemittedwhilethebatterygeneratescurrentwillgenerateradiation,whichwillinduceunexpecteddiseases.

Second,theproblemofscreenflickerandtheflickerof3Dglassesismainlyreflectedinshutter-type3Dglasses.Itneedstobeopenedandclosed50/60timesperminute.Evenifitissofast,theuser'sglassescanstillfeelit.Ifyouwatchforalongtime,theburdenontheeyeballwillincrease.

3.Thebrightnessisgreatlydiscounted.Afterwearingthiskindof3Dglasseswithblackfilm,eacheyecanactuallyonlygethalfofthelight,sotheshuttertypeislikewatchingTVwithsunglassesThesame,andtheeyesgettiredeasily.

Non-flashing3Dtechnology

  • Theprincipleofnon-flashing

Thenon-flashing3DTVmethodisthemostnaturalwaythatisclosesttoouractualthree-dimensionalexperience.Justlikeenjoyinglively3Dimagesinamovietheater,youcanwatchtwoimagesatthesametime.Stickaspecialfilmthatseparatestheleftandrightimagesonthesurfaceofthe3DTVandglasses.TheleftandrightimagesareseparatedbytheTVandsenttotheglassesatthesametime.Throughthefilteringoftheglasses,theseparatedleftandrightimagesaresenttoeacheye,andthebraincombinesthetwoimagestomakepeoplefeel3Dstereoscopic.

Characteristicsofnon-flashing3D:Butitcanalsobebasedontheperspective.Non-flashing3Disnotaproblematallwhenviewingwithintherecommendedaudio-visualdistance.Forexample,apartfromstanding,sittingorwatchingTVinaveryabnormalposturewithinonemeter,thereisnoproblemwhenwatching3DTVwithintherecommendeddistanceforviewingandlistening.

Theonlydisadvantageisthatwhenplaying1080p,itisonly540p.Becausethepicturequalityishalved,itwillalsobringinsignificanteffects.

Four-dimensionalspace

Theconnectionbetweenthree-dimensionalspaceandfour-dimensionalspace

Four-dimensionalspaceisaconceptoftimeandspace.Simplyput,anyfour-dimensionalspacecanbecalleda"four-dimensionalspace".However,mostofthe"four-dimensionalspace"mentionedindailylifereferstothe"four-dimensionalspace-time"mentionedbyEinsteininhis"GeneralRelativity"and"SpecialTheoryofRelativity."AccordingtoEinstein'sconcept,ouruniverseiscomposedoftimeandspace.Therelationshipbetweentimeandspaceisthatinthestructureofspace,thereisanadditionaltimeaxisbeyondthethreeaxesoflength,width,andheightofordinarythree-dimensionalspace,andthistimeaxisisanaxisofimaginaryvalues.

Thefour-dimensionalspacementionedhereisobviouslydifferentfromthefour-dimensionalspace-timereferredtobythetheoryofrelativity.Theso-calledfour-dimensionalspace-timereferstothelackofdimensionalspaceandone-dimensionaltimeinharmonytoformacomplex.Thetheoryofrelativitybelievesthattimeandspaceareinseparable.,Aredifferentpartsofawhole.Thefour-dimensionalspacementionedherereferstothespacewithouttime.Itisbelievedthatinadditiontothefamiliarthree-dimensionalspaceintheuniverse,thereisalsoaone-dimensionalspacethatpeopledonotknowabout.""and"Gao"reallyexist,butitisextremelydifficulttodetect,sothatthecurrentextremelypowerfulandextremelycomplexphysicsexperimentshavenotbeenfound.AccordingtoEinstein'stheoryofrelativity:thethree-dimensionalspacewefaceinlifeplustimeconstitutestheso-calledfour-dimensionalspace.Sincethetimeweperceiveontheearthisveryslow,wewillnotobviouslyfeeltheexistenceoffour-dimensionalspace,butonceweboardtheNingZhouspacecraftorreachtheuniverse,thespeedofourframeofreferencewillstarttoincreaseorWhenstartingtoapproachthespeedoflight,wecanfindthechangeintimebycomparison.Ifyousailinaspacecraftthatisclosetothespeedoflightperhour,yourlifewillbemuchlongerthanthatofapersononearth.Thereisapotentialplacehere,andtheenergyofmatterwillchangewiththechangeofspeed.Therefore,thechangeandcontrastoftimearebasedonthespeedofmatterastheframeofreference.Thisiswhytimeisoneoftheelementsoffour-dimensionalspace.

Thedifferencebetweenthree-dimensionalspaceandfour-dimensionalspace

Three-dimensionalEuclideanspacehasonlyonedifferentialstructure,whilefour-dimensionalEuclideanspacehasaninfinitevarietyofdifferentialstructures.Three-dimensionalspacereferstoathree-dimensionalspacewithlength,width,andheight.Thefour-dimensionalspaceusuallyreferstothestateofanobjectwithathree-dimensionalspaceduringmovement,thatis,athree-dimensionalshapewithlength,width,andheight.Themovementprocessalsoincludeschangesinthetimedimension.

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