총 44페이지

Cover Story
Couldinversionhappeninreality?
InversionisusedasanamazingcinematicdeviceinTENET.Inparticular,thesceneinwhichtheprotagonistfights
against himself without knowing is considered one of the most impressive scenes in the movie. This action scene
hasasymmetrybetweenthebeginningandtheend,andthefightproceedsnaturally,whetherviewedfromthefront
orfromtheback.Theactioncreatedthemomenteachother’stimezonesintersectandgivesacompletelydifferent
feeling from the numerous action scenes in the past. Nolan shows the action in the forward and reverse directions
once,andthebackgroundmusicisalsoplayedinaninvertedmannertoemphasizethesubject.
ProfessorSonSeung-Wooofthe
ProfessorKimHeung-sikoftheDepartment
DepartmentofAppliedPhysicsatHanyang
ofPhysicsatKangwonNationalUniversity
University
Professor Kim Heung-sik said the inversion
The films realized inversion by receiving
could be theoretically possible only, not be seen
technologiesthathavenotyetbeendevelopedfrom
in the real world. Entropy, also, is a thoroughly
the future. However, regarding the question of
thermodynamic concept, and already there are
whether it is possible to implement this in reality,
devices that lower entropy such as refrigerators
Professor Son said, “It is absolutely impossible to
which consume mechanical work to pump heat
invert any object that is a technology in a movie”
out. So, an inverse of the time flow is just the
and saying, “I think the increase in entropy is in
imagination of Nolan. But professor Kim suggests
line with the passage of time, but the relationship
theconditiontorealizeinversion.Ifonecancontrol
is not cause and effect.” He then asked an
thespeedofanucleicparticle,thinkofthesituation
interesting question: the question is the sentence
in which a cup containing coffee drops and gets
“If time passes, entropy does not decrease” true,
shattered.Atthattime,bystoppingtheflowoftime
isacontrapositivesentence“Ifentropydecreases,
and placing all-reflecting and completely elastic
timedoesnotflowintheforwarddirection”right?
mirrorsinfrontofeveryparticleandresumingthe
Inotherwords,itisthatifwefindawaytoreduce
timeflow.Afterthecollision,themirrorshouldbe
entropy,willitbethefirststeptothepast.
removedinstantly.Then,althoughitseemsunlikely,
Though, here is the reason why professor
there will be an unnatural series of happening;
Son said “inversion is impossible.” The correct
shattered pieces of cup being popped up from the
contrapositive sentence of above is “entropy
floorandrecombining,splashedcoffeegoingback
decreases, and time does not go into the future.”
intothecup,allthecracksofthecupbeingrapidly
More friendly, what is the contrapositive sentence
healed. It seems weird but perfectly fine with all
of “if a boy does not get scolded, he does not
four fundamental interactions of physics. Through
study.” It is not “if a boy studies, he will get
thisprocess-reverseallparticlesatthesametime-
scolded;”thecorrectansweristhe“aboystudies,
inversion can happen as suggested in the movie.
hemusthavebeenscolded.”Inshort,studyingand
Alltheunnaturalphenomenasuchascrashedcars
getting scolded are not in a causal relationship, it
jumpingup,bulletsplantedonthewallfiringback
is just a series of events that happened together.
into the guns and cracks on the wall healed only
Assaidbefore,entropyandtimearerelatedinany
inanisolatedsystem.So,evenifscientistsmakeit
way. But scientists still struggle to find whether
possibletoreversetheparticles,inversionistotally
entropyisthecauseoftime.
anotherstoryduetothepremiseofthesecondlaw
ofthermodynamics.
20
www.theargus.org

현재 포커스의 아래내용들은 동일한 컨텐츠를 가지고 페이지넘김 효과및 시각적 효과를 제공하는 페이지이므로 스크린리더 사용자는 여기까지만 낭독하시고 위의 페이지이동 링크를 사용하여 다음페이지로 이동하시기 바랍니다.