If superpowers were real: Invisibility - Joy Lin

Kada bi super-moći bile stvarnost - Nevidljivost: Džoj Lin (Joy Lin)

Prevodilac: Jelena Jaranović Lektor: Tatjana Jevdjic

Wouldn't it be great if we could be

Zar ne bi bilo sjajno kad bismo mogli

invisible?

da budemo nevidljivi?

Ha, right?

Pa, da.

I mean, we could spy on people without being noticed

Mislim, mogli bismo da špijuniramo ljude neprimećeni

and do whatever we want

i radimo šta god želimo

without being held responsible.

bez odgovornosti.

Now, magicians have figured out

Mađioničari su našli način

how to utilize full-sized mirrors to bend light

kako da pomoću velikih ogledala zakrive svetlost

in order to create disappearing illusions.

tako da stvore iluziju nestajanja.

Scientists have created metamaterials

Naučnici su stvorili meta-materijale

to guide rays of light

koji navode zrake svetlosti

around tiny, two-dimensional objects.

oko tankih, dvodimenzionalnih objekata.

Cameras can also film what is behind you

Kamere takođe mogu da snime ono što je iza vas

and project the image

so you appear invisible from the front.

i projektuju sliku

tako da spreda delujete nevidljivo.

However, none of these options

Ipak, ni jedna od ovih opcija

can make an object as large as a person

ne može učiniti da objekat veličine čoveka

appear invisible for all angles and distances

bude nevidljiv iz svih uglova i udaljenosti

while its moving.

dok je u pokretu.

But if you are truly invisible,

Ali ako ste stvarno nevidljivi

as in from within,

potpuno,

here are a few problems

evo nekoliko problema

you may not have thought about before.

o kojima možda niste ranije razmišljali.

To move around undetected by other people,

Da biste se kretali neprimećeni među drugim ljudima

you would have to be totally naked.

trebalo bi da budete potpuno goli.

Even if it's freezing outside!

Čak iako je ledeno napolju!

You can't carry anything,

Ne smete nositi ništa sa sobom

including your wallet and keys,

poput novčanika ili ključeva.

otherwise people would just see

U suprotnom, ljudi bi videli

your wallet and keys floating around.

vaš novčanik ili ključeve kako plutaju okolo.

Drivers and people on the street can't see you either,

Vozači i ljudi na ulici vas takođe ne bi videli,

therefore they can and will run into you at some point.

tako da bi vas verovatno pregazili u nekom trenutku.

Oh, and you better not wear any perfume

I da, bolje da ne koristite parfem

or make any noise breathing,

ili ne dišete glasno,

otherwise they'll know you're there.

jer će ostali lako primetiti da ste tu.

And, just because you start off invisible,

I to što ste nevidljivi na početku

ne znači da ćete takvi i ostati.

doesn't mean you'll stay that way.

What if someone accidentally spills

Šta ako neko slučajno prospe

scolding hot coffee on you?

vrelu kafu na vas?

And what if it rains?

A šta ako pada kiša?

But if you think only liquid can make you visible,

Ali ako mislite da vas samo tečnost čini vidljivim

you're wrong.

grešite.

Dust consists of dead skin cells from humans,

Prašina od izumrlih ćelija ljudske kože,

soil particles,

and fibers from clothes made from cotton

čestice zemljišta,

vlakna sa pamučne odeće

and other materials.

i drugih materijala.

Dust sticks to the moisture on our skin when we sweat

Prašina se lepi na našu kožu kada se oznojimo

and the tiny hairs on our skin when we are dry.

i na sitne dlačice na našem telu kada smo suvi.

So, even if you are invisible,

Dakle, iako ste nevidljivi,

dust would still land on every part of you.

prašina bi i dalje padala na vas.

We usually don't notice the dust on our skin

Obično ne primećujemo ovu prašinu na koži

because we can't see a thin layer of dust

jer ne možemo da vidimo tako tanak sloj

on top of our skin color.

zbog boje naše kože.

But, if you're invisible,

Ali, ako ste nevidljivi,

people would see a human-shaped blob of dust

ljudi će videti oblak prašine ljudskog oblika

walking around with extremely dirty soles.

kako šeta okolo sa jako prljavim tabanima.

Gross!

Bljak!

What do you think the world looks like

Šta mislite, kako bi svet izgledao

if you are invisible?

da ste nevidljivi?

Well, the answer is nothing.

Pa, nikako.

The reason you can't see in the dark

Razlog zbog kog ne vidimo u mraku

is because there is no light.

je nedostatak svetlosti.

To see an apple,

Da biste videli jabuku,

light has to hit the apple

svetlost treba da pogodi jabuku

and return it to your eyes.

i odbije se nazad ka vašim očima.

Then, the retinas in your eyes

Onda, mrežnjače u vašim očima

catch the light reflection for your brain

hvataju refleksiju svetlosti kako bi vaš mozak

to interpret into the image of an apple.

mogao to da pretvori u sliku jabuke.

If you're invisible,

Ako ste nevidljivi,

then, by definition, light would travel

onda bi, po definiciji, svetlost prolazila

through you or around you

kroz i oko vas,

instead of bouncing off you for people to see.

umesto da se odbija od vas kako bi vas ljudi videli.

But that means that retinas in your eyes

Ali to takođe znači, da ni vaše mrežnjače

are not catching the light, either.

ne primaju nikakvo svetlo.

Therefore, your brain has nothing

I zbog toga, vaš mozak nema ništa

to interpret into an image.

što bi pretvorio u sliku.

Can you see your reflection

Možete li videtli svoj odraz

without a mirror to stop the light?

bez ogledala da zaustavi svelost?

No.

Ne.

So, when you can't be seen by others,

Dakle, kada vas drugi ne mogu videti,

you also cannot see.

ni vi, takođe, ne možete videti.

Ouch!

Uh!

Now, have you given any thought

Nego, jeste li pomišljali šta bi bilo

as of whether the invisibility is permanent?

da li je nevidljivost trajna?

If it is, how can you receive medical treatment

Da jeste, kako biste primili neku terapiju od lekara

from a doctor if you're injured?

ako ste povređeni?

The doctor wouldn't know

Doktor ne bi znao

where to apply ointments or bandages

gde da stavi kremu ili zavoje

because they cannot access your injury.

jer ne bi video vašu povredu.

For that matter, you can't see it either.

Usput, ni vi je ne biste videli.

I mean, what if you have an illness or an infection?

A, šta ako se razbolite ili dobijete neku infekciju?

How can the doctor diagnose you

Kako bi doktor postavio dijagnozu

without being able to see the color change or inflammation?

bez mogućnosti da vidi promenu boje ili upalu?

And what if everyone is permanently invisible?

Šta ako bi svi bili trajno nevidljivi?

Well, think about how boring the world would be

Pa, zamislite koliko bi svet bio dosadan

ako ne vidite ljude na ulicama,

without seeing people on the streets,

on TV,

na TV-u

or at home on your computer

ili kod kuće na računaru

like right now.

kao sada.

It's lonely being invisible.

Usamljeno je biti nevidljiv.

Now, which superpower physics lesson

A sada, koju super-moć

will you explore next?

ćeš sledeću istražiti?

Shifting body size and content,

Promena veličine i zapremine tela,

super speed,

super-brzina,

flight,

letenje,

super strength,

super-snaga,

immortality,

besmrtnost

and

i

invisibility.

nevidljivost.