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considered more important than other settings in that it is used as the most important element in the movie. Time
travelwithinversionisdifferentfromgeneraltimetravel;asreversethetimeflow,inversioncannotgotothefuture.
Moreover, defying the flow of time is realized in a way that goes back to the past rather than a way warping to a
particularmomentinthepast.So,ifonepassesthroughtheinversionmachine,theycanseetheclock’shandgoing
counterclockwise,birdsflyingbackward,andpeopledoingthemoonwalk.
Thetheoreticalfoundationofinversion
In TENET, the explanation of inversion includes an unfamiliar concept of entropy and the second law of
thermodynamics.So,whatarethese?
Entropy
Entropyisanewthermodynamicphysicalquantitythatdividesenergybytemperature.Entropyisneitherenergy,
nortemperature;itisawholenewconceptofphysicalquantity.Tobrieflyexplain,entropyisclosetoquantifyingthe
propensityofparticlestogointoadisorderedstateinthemicroscopicworld.Stillonecanthink‘wouldnotentropy
be intuitively related to the energy and temperature?’ Unfortunately, that is not the case. Considering the velocity,
itisobvious.Velocityisthephysicalquantityinducedbydividingthedistancebytime,butitisnoteasytoconnect
themtovelocityatoncewhenonethinkofthephysicalquantitiesintheformula.Thisisbecausevelocity,distance,
and time are all different dimensions. Entropy is the same; entropy, energy, and temperature are all different
dimensions.
ⓒPixabay
homepage
official
ⓒTENET
▲Inkspreadsthroughthewaterduetothelaw
▲Explosionwhileinversiondefiesthelawof
▲ElizabethDebikiplayedKatinTENET
ofthermodynamics
secondthermodynamics
Thesecondlawofthermodynamics
“Thesecondlawofthermodynamics:entropyofanisolatedsystemcanneverdecreaseovertime”
Asmentionedabove,entropyisthepropensitytogointodisorder.Nowthestateofthesecondlawcouldbewritten
easily. “Finally, it becomes disordered in an isolated system.” Here is a conventional example of this, imagine
dropping a drop of ink into a fish tank. Ink will spread out. In other words, it becomes disorder. Ink spreads in a
random direction rather than a fixed direction. Further, ink and water in the tank cannot be separated in the usual
way. Of course, heating to evaporation can divide, but enormous energy enters the process; and the moment the
energyenters,thepremiseofanisolatedsystemisbroken.Inabroaderperspective,theprocessofenergyinandout
also flows from high energy to low energy, which in turn leads to the second law of thermodynamics. “Finally, it
becomesdisorderedinanisolatedsystem.”
18
www.theargus.org
considered more important than other settings in that it is used as the most important element in the movie. Time
travelwithinversionisdifferentfromgeneraltimetravel;asreversethetimeflow,inversioncannotgotothefuture.
Moreover, defying the flow of time is realized in a way that goes back to the past rather than a way warping to a
particularmomentinthepast.So,ifonepassesthroughtheinversionmachine,theycanseetheclock’shandgoing
counterclockwise,birdsflyingbackward,andpeopledoingthemoonwalk.
Thetheoreticalfoundationofinversion
In TENET, the explanation of inversion includes an unfamiliar concept of entropy and the second law of
thermodynamics.So,whatarethese?
Entropy
Entropyisanewthermodynamicphysicalquantitythatdividesenergybytemperature.Entropyisneitherenergy,
nortemperature;itisawholenewconceptofphysicalquantity.Tobrieflyexplain,entropyisclosetoquantifyingthe
propensityofparticlestogointoadisorderedstateinthemicroscopicworld.Stillonecanthink‘wouldnotentropy
be intuitively related to the energy and temperature?’ Unfortunately, that is not the case. Considering the velocity,
itisobvious.Velocityisthephysicalquantityinducedbydividingthedistancebytime,butitisnoteasytoconnect
themtovelocityatoncewhenonethinkofthephysicalquantitiesintheformula.Thisisbecausevelocity,distance,
and time are all different dimensions. Entropy is the same; entropy, energy, and temperature are all different
dimensions.
ⓒPixabay
homepage
official
ⓒTENET
▲Inkspreadsthroughthewaterduetothelaw
▲Explosionwhileinversiondefiesthelawof
▲ElizabethDebikiplayedKatinTENET
ofthermodynamics
secondthermodynamics
Thesecondlawofthermodynamics
“Thesecondlawofthermodynamics:entropyofanisolatedsystemcanneverdecreaseovertime”
Asmentionedabove,entropyisthepropensitytogointodisorder.Nowthestateofthesecondlawcouldbewritten
easily. “Finally, it becomes disordered in an isolated system.” Here is a conventional example of this, imagine
dropping a drop of ink into a fish tank. Ink will spread out. In other words, it becomes disorder. Ink spreads in a
random direction rather than a fixed direction. Further, ink and water in the tank cannot be separated in the usual
way. Of course, heating to evaporation can divide, but enormous energy enters the process; and the moment the
energyenters,thepremiseofanisolatedsystemisbroken.Inabroaderperspective,theprocessofenergyinandout
also flows from high energy to low energy, which in turn leads to the second law of thermodynamics. “Finally, it
becomesdisorderedinanisolatedsystem.”
18
www.theargus.org
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