Jonathan Drori: The beautiful tricks of flowers

78,098 views ・ 2011-07-06

TED


Please double-click on the English subtitles below to play the video.

Prevodilac: Jelena Nedjic Lektor: Ana Zivanovic-Nenadovic
00:17
Do you know
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Da li znate
00:19
how many species of flowering plants there are?
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koliko biljaka cvetnica postoji?
00:22
There are a quarter of a million -- at least those are the ones we know about --
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Postoji četvrtina miliona, ili barem mi znamo za toliko vrsta,
00:25
a quarter of a million species of flowering plants.
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četvrtina miliona različitih vrsta biljaka cvetnica.
00:28
And flowers are a real bugger.
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A cveće je pravi mali projekat za biljku.
00:30
They're really difficult for plants to produce.
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Biljci je veoma je naporno da proizvede cvet.
00:32
They take an enormous amount of energy and a lot of resources.
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Cvet zahteva ogromnu količinu energije i jako puno resursa.
00:35
Why would they go to that bother?
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Zašto bi se biljke onda bavile time?
00:37
And the answer of course, like so many things in the world,
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Odgovor je naravno, kao i za toliko drugih stvari na svetu,
00:39
is sex.
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seks.
00:41
I know what's on your mind when you're looking at these pictures.
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Znam o čemu razmišljate kada gledate ove slike.
00:45
And the reason that sexual reproduction is so important --
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Razlog sbog koga je seksualna reprodukcija toliko važna
00:48
there are lots of other things that plants can do to reproduce.
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jeste što postoji mnogo drugih stvari koje bi biljke mogle da urade ne bi li se umnožile.
00:51
You can take cuttings;
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Ako razmotrimo strugotine kao primer;
00:53
they can sort of have sex with themselves;
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one mogu same sa sobom imati seks na neki način;
00:55
they can pollinate themselves.
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mogu same sebe oprašivati.
00:57
But they really need to spread their genes
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Ali je neophodno u stvari da oni rasprostrane svoje gene
00:59
to mix with other genes
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kako bi ih ukrstili sa drugim genima
01:01
so that they can adapt to environmental niches.
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ne bi li se uspešno prilagodile na ekološke niše.
01:03
Evolution works that way.
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Evolucija funkcioniše na taj način.
01:05
Now the way that plants transmit that information
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Put kojim biljke prenose tu informaciju
01:07
is through pollen.
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je polen.
01:09
Some of you may have seen some of these pictures before.
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Neki od vas su možda već videli neke od ovih slika.
01:11
As I say, every home should have a scanning electron microscope
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Kao što bih ja rekao, svaka kuća bi trebalo da ima skenirajući elektronski mikroskop
01:13
to be able to see these.
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kako bi bila u mogućnosti da vidi ovo.
01:15
And there is as many different kinds of pollen
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I postoji onoliko različitih vrsta polena
01:17
as there are flowering plants.
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koliko ima biljaka cvetnica.
01:19
And that's actually rather useful for forensics and so on.
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A to je u principu veoma korisno forezničarima i tako dalje.
01:22
Most pollen that causes hay fever for us
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Većinu tipova polena koja izaziva polensku groznicu kod ljudi
01:25
is from plants that use the wind
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proizvode biljke koje koriste vetar
01:27
to disseminate the pollen,
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kako bi rasprostranile svoj polen.
01:29
and that's a very inefficient process,
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I to je veoma neefikasan proces,
01:32
which is why it gets up our noses so much.
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usled koga polen završi u našim nosevima.
01:34
Because you have to chuck out masses and masses of it,
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Jer treba prozivesti ogromne količine polena,
01:36
hoping that your sex cells, your male sex cells,
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u nadi da će polne ćelije, muške polne ćelije,
01:39
which are held within the pollen,
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koje se nalaze unutar polena,
01:41
will somehow reach another flower just by chance.
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nekako pronaći drugi, odgovarajući cvet pukom igrom slučaja.
01:43
So all the grasses, which means all of the cereal crops,
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Većina trava, što uključuje i sve žitarice,
01:46
and most of the trees
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i većina drveća
01:48
have wind-borne pollen.
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imaju polen koji se prenosi vetrom.
01:50
But most species
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Ali većina cvetnica
01:52
actually use insects to do their bidding,
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u principu koristi insekte u te svrhe.
01:54
and that's more intelligent in a way,
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I to je inteligentniji način jer im
01:57
because the pollen, they don't need so much of it.
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nije potrebna tolika količina polena.
02:00
The insects
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Insekti
02:02
and other species
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i druge vrste
02:05
can take the pollen,
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mogu pokupiti polen
02:07
transfer it directly to where it's required.
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i preneti ga direktno tamo gde je potreban.
02:09
So we're aware, obviously, of the relationship
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Tako da smo očigledno svesni odnosa
02:12
between insects and plants.
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između insekata i biljaka.
02:14
There's a symbiotic relationship there,
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To je simbiotska zajednica,
02:16
whether it's flies or birds or bees,
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bez obzira da li polen raznose ptice ili pčele,
02:19
they're getting something in return,
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oni dobijaju nešto zauzvrat,
02:21
and that something in return is generally nectar.
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a to je najčešće nektar.
02:24
Sometimes that symbiosis
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U nekim slučajevima je ta simbioza
02:26
has led to wonderful adaptations --
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dovela do fantastičnih adaptacija
02:28
the hummingbird hawk-moth
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primer prilagođenosti koji vidimo kod kolibrija: jastreb-moljca
02:30
is beautiful in its adaptation.
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je prelep.
02:32
The plant gets something,
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Biljka dobija nešto
02:34
and the hawk-moth spreads the pollen somewhere else.
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onzirom da kolibri prenosi polen na drugo mesto.
02:38
Plants have evolved
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Biljke su evoluirale
02:40
to create little landing strips here and there
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da naprave male piste ovde i onde
02:42
for bees that might have lost their way.
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za pčele koje su se možda izgubile na svom putu.
02:44
There are markings on many plants
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Postoje simboli na mnogim biljkama
02:46
that look like other insects.
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koji izgledaju kao drugi insekti.
02:49
These are the anthers of a lily,
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Ovo su prašnici ljiljana
02:51
cleverly done
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prepametno dizajnirani
02:53
so that when the unsuspecting insect
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tako da kada insekt koji ništa ne sumlja
02:55
lands on it,
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sleti,
02:57
the anther flips up and whops it on the back
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prašnik se izdigne i lupi ga po leđima
02:59
with a great load of pollen that it then goes to another plant with.
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sa ogromnom količinom polena koji ovaj ponese do sledeće biljke sa sobom.
03:02
And there's an orchid
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I tu je primer orhideja
03:05
that might look to you as if it's got jaws,
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i vama se može učiniti da one imaju vilice.
03:07
and in a way, it has; it forces the insect to crawl out,
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I na neki način, imaju ih, obzirom da one prinude insekta da ispuzi odatle,
03:10
getting covered in pollen that it takes somewhere else.
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i na taj način insekt bude prekriven polenom koji prenese na drugo mesto.
03:14
Orchids: there are 20,000, at least,
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Orhideje, ima ih u najmanju ruku 20.000,
03:16
species of orchids --
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različitih vrsta orhideja--
03:18
amazingly, amazingly diverse.
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neverovatna, nevrovatna različitost.
03:20
And they get up to all sorts of tricks.
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I one koriste sve moguće vrste trikova.
03:22
They have to try and attract pollinators
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Moraju da pokušaju i privuku oprašivače
03:25
to do their bidding.
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koji prenose njihov polen.
03:27
This orchid, known as Darwin's orchid,
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Ova orhideja, poznata kao Darvinova orhideja,
03:30
because it's one that he studied
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jer je to vrsta koju je on izučavao
03:32
and made a wonderful prediction when he saw it --
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i došao do prelepe pretpostavke kada ju je video.
03:34
you can see that there's a very long nectar tube
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Možete videti da ima veoma dugu cev za nektar
03:37
that descends down
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koja se spušta
03:39
from the orchid.
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od orhideje.
03:41
And basically what the insect has to do --
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I u principu ono što insekt treba da uradi --
03:43
we're in the middle of the flower --
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mi smo sada u sredini cveta --
03:45
it has to stick its little proboscis
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mora da zarije svoje malo rilo
03:47
right into the middle of that
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tačno u sredinu ovoga
03:49
and all the way down that nectar tube
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i skroz do dna cevi za nektar
03:51
to get to the nectar.
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kako bi došao do nektara.
03:53
And Darwin said, looking at this flower,
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I, gledajući ovaj cvet, Darvin je rekao,
03:56
"I guess something has coevolved with this."
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"Pretpostvljam da je nešto ko-evoluiralo sa ovom adaptacijom."
03:58
And sure enough,
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I defintivno,
04:00
there's the insect.
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postoji insekt.
04:02
And I mean, normally it kind of rolls it away,
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I svakako, on inače nekako zavije svoje rilo,
04:04
but in its erect form,
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ali u svojoj ispravljenoj formi,
04:06
that's what it looks like.
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izgleda baš ovako.
04:09
Now you can imagine
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Vi sada možete zamisliti
04:11
that if nectar
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da ako je nektar
04:13
is such a valuable thing
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toliko važna stvar
04:16
and expensive for the plant to produce
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i za biljku energetski preskupa da ga proizvede,
04:18
and it attracts lots of pollinators,
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a pri tome privlači puno oprašivača,
04:21
then, just as in human sex,
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onda, kao i kod seksa među ljudima,
04:23
people might start to deceive.
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ljudi bi možda počeli da varaju.
04:25
They might say, "I've got a bit of nectar. Do you want to come and get it?"
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Mogli bi reći, "Imam malo nektara. Hoćeš da dođes da ga pokupis?"
04:28
Now this is a plant.
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A ovo je biljka.
04:31
This is a plant here
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Ovo je biljka ovde
04:33
that insects in South Africa just love,
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koju insekti u Južnoj Africi obožavaju.
04:37
and they've evolved with a long proboscis
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I evolucija je dovela kod njih do razvijanja dugog rila
04:40
to get the nectar at the bottom.
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kako bi mogli da pokupe nektar sa dna cveta.
04:42
And this is the mimic.
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A ovo je primer mimikrije.
04:44
So this is a plant that is mimicking the first plant.
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Ovo je biljka koja oponaša prvu biljku.
04:47
And here is the long-probosced fly
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A ovo je muva sa dugim rilom
04:50
that has not gotten any nectar from the mimic,
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koja ne može da dođe do nektara iz biljke koja je razvila mimikriju.
04:53
because the mimic doesn't give it any nectar. It thought it would get some.
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Prosto, usled toga što ta biljka ne proizvodi nikakav nektar. Ali je insekt misilio da ce doći do nektara.
04:56
So not only has the fly
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Tako da ne samo da muva
04:58
not got the nectar from the mimic plant,
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nije dobila nektar,
05:00
it's also -- if you look very closely
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već i - ukoliko pažljivo pogledate -
05:02
just at the head end, you can see that it's got a bit of pollen
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baš ovde na kraju glave insekta, možete uočiti malu količinu polena
05:05
that it would be transmitting to another plant,
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koju bi insekt preneo do sledeće biljke
05:07
if only some botanist hadn't come along
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samo da neki botaničar nije došao
05:09
and stuck it to a blue piece of card.
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i zakačio plavu karticu na muvu.
05:11
(Laughter)
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(Smeh)
05:16
Now deceit carries on through the plant kingdom.
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Dakle obmane su česta pojava u celom biljnom carstvu.
05:19
This flower with its black dots:
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Ovaj cvet sa crnim tačkama:
05:21
they might look like black dots to us,
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ovo možda izgleda kao crna tačka nama,
05:23
but if I tell you, to a male insect of the right species,
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ali mogu vam reći, da insektu mužjaku tačno određene vrste,
05:26
that looks like two females
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to izgleda kao dve ženke
05:28
who are really, really hot to trot.
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koje su zaista, zaista u sezoni parenja.
05:30
(Laughter)
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(Smeh)
05:32
And when the insect gets there and lands on it,
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I kada insekt sleti na biljku,
05:35
dousing itself in pollen, of course, that it's going to take to another plant,
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opija se polenom, koji će, naravno, preneti do druge biljke,
05:38
if you look at the every-home-should-have-one scanning electron microscope picture,
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ukoliko pogledate ovu sliku koja potiče iz elektronskog mikroskopa koji svako domaćinstvo treba imati,
05:42
you can see that there are actually some patterning there,
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moći ćete da videte određene,
05:44
which is three-dimensional.
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trodimenzionalne šeme.
05:46
So it probably even feels good for the insect,
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Tako da insekt verovatno uživa u svemu tome,
05:49
as well as looking good.
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pored toga što izgleda dobro.
05:52
And these electron microscope pictures --
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Ove su slike slikane elekronskim mikroskopom
05:54
here's one of an orchid mimicking an insect --
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ovo je orhideja koja imitira insekta;
05:57
you can see that different parts of the structure
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možete uočiti da različiti delovi ove strukture
06:00
have different colors and different textures to our eye,
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imaju različte boje i teksturu koje možemo uočiti našim okom,
06:03
have very, very different textures
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ali je to veoma, veoma različita tekstura
06:05
to what an insect might perceive.
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u odnosu na ono što insekt uočava.
06:08
And this one is evolved to mimic
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A ova biljka je evoluirala da imitira
06:10
a glossy metallic surface
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sjajno-metalnu površinu
06:13
you see on some beetles.
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koju možete videti na nekim bubama.
06:15
And under the scanning electron microscope,
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A ispod skenirajućeg elektronskog mikroskopa,
06:18
you can see the surface there --
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možete zapaziti površinu tamo
06:21
really quite different from the other surfaces we looked at.
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koja je poprilično različita u odnosu na površinu koju smo upravo posmatrali.
06:25
Sometimes the whole plant
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Ponekada cela biljka
06:27
mimics an insect, even to us.
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prosto izgleda kao insket, čak to tako izgleda i našem oku.
06:30
I mean, I think that looks like some sort of flying animal or beast.
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Hoću da kažem, da ja mislim da izgleda kao životinja koja leti ili zverka.
06:33
It's a wonderful, amazing thing.
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To je prelepa, očaravajuća stvar.
06:36
This one's clever. It's called obsidian.
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Ova ovde je jako pametna. Poznata je pod imenom opsidijan.
06:39
I think of it as insidium sometimes.
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A ja je ponekada zovem insidijum.
06:41
To the right species of bee,
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Pravoj vrsti vrsta pčele,
06:44
this looks like another very aggressive bee,
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ovo izgleda kao druga veoma agresivna vrsta pčele,
06:46
and it goes and bonks it on the head lots and lots of times to try and drive it away,
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i pčela je napada svojom glavom mnogo, mnogo puta kako bi pokušala da je otera,
06:49
and, of course, covers itself with pollen.
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i, naravno, na taj način bude okupana polenom.
06:51
The other thing it does
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Druga stvar koju radi
06:53
is that this plant mimics another orchid
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je ta da ova biljka imitira drugu orhideju
06:56
that has a wonderful store
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koja ima prelepo skladište
06:59
of food for insects.
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hrane za insekte.
07:01
And this one doesn't have anything for them.
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A ova ovde nema uopšte hranu za njih.
07:03
So it's deceiving on two levels --
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Tako da vrši prevaru na dva nivoa
07:05
fabulous.
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fantastično.
07:07
(Laughter)
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(Smeh)
07:09
Here we see ylang ylang,
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Ovde vidimo "ylang ylang",
07:11
the component of many perfumes.
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komponentu mnogih parfema.
07:13
I actually smelt someone with some on earlier.
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Ja sam u stvari ranije i osetio taj miris na nekome.
07:16
And the flowers don't really have to be that gaudy.
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A cveće ne treba zaista da izgleda toliko kitnjasto.
07:18
They're sending out a fantastic array of scent
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Ono odašilje fantastične vrste mirisa
07:21
to any insect that'll have it.
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svakom insketu koji to želi.
07:24
This one doesn't smell so good.
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Ova ne miriše tako dobro.
07:26
This is a flower
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Ovo je cvet
07:28
that really, really smells pretty nasty
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koji miriše veoma, veoma neprijatno
07:31
and is designed, again, evolved,
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a dizajniran je tako, odnosno, evoluirao je
07:34
to look like carrion.
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da liči na strvinu.
07:37
So flies love this.
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Tako da je muve obožavaju.
07:39
They fly in and they pollinate.
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One sleću na cvet i pokupe polen.
07:42
This, which is helicodiceros,
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Ova biljka, zvana helikodiceros,
07:46
is also known as dead horse arum.
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a poznata je i kao cvet mrtvog konja.
07:49
I don't know what a dead horse actually smells like,
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Ja ne znam kako mrtav konj u stvarnosti miriše,
07:51
but this one probably smells pretty much like it.
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ali ova biljka veoravatno miriše poprilično slično.
07:53
It's really horrible.
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Stvarno je užasno.
07:55
And blowflies just can't help themselves.
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A, muve zunzare prosto ne mogu da odole.
07:57
They fly into this thing,
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One lete ka ovom cvetu,
07:59
and they fly all the way down it.
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i prelete celim putem niz biljku.
08:01
They lay their eggs in it,
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Polože svoja jaja na nju,
08:03
thinking it's a nice bit of carrion,
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misleći da je to dobar primerak strvine,
08:05
and not realizing that there's no food for the eggs, that the eggs are going to die,
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ne shvatajući da tu nema hrane za njihova jaja, da će jaja uginuti,
08:08
but the plant, meanwhile, has benefited,
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ali biljka, u međuvremenu, uživa u svojim beneficijama,
08:11
because the bristles release
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jer se njihove čekinje otvore
08:13
and the flies disappear
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i muve odlete
08:15
to pollinate the next flower -- fantastic.
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kako bi oprašile sledeći cvet- fantastično.
08:18
Here's arum, arum maculatum,
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Ovo je "arum maculatum",
08:20
"lords and ladies," or "cuckoo-pint" in this country.
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kod nas poznat kao kozlac.
08:23
I photographed this thing last week in Dorset.
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Napravio sam ovu fotografiju prošle nedelje u Dorsetu.
08:25
This thing heats up
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Ova biljčica se zagreje
08:27
by about 15 degrees above ambient temperature --
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15 stepeni iznad temperature okoline -
08:29
amazing.
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čarobno.
08:31
And if you look down into it,
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I ukoliko analizirate biljku,
08:33
there's this sort of dam past the spadix,
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uočićete neku vrstu brane posle cvasti,
08:36
flies get attracted by the heat --
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vrućina privuče muve--
08:38
which is boiling off volatile chemicals, little midges --
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u kojoj ključaju isparljive hemikalije, i male muve--
08:40
and they get trapped underneath in this container.
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budu uhvaćene u zamku u ovom kontejneru.
08:43
They drink this fabulous nectar
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Piju ovaj dražesni nektar
08:46
and then they're all a bit sticky.
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i postanu potpuno lepljive.
08:48
At night they get covered in pollen,
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U toku noći muve budu potpuno prekrivene polenom,
08:51
which showers down over them,
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budu prosto istuširane polenom,
08:53
and then the bristles that we saw above,
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i tada čekinjice koje smo malo čas videli
08:55
they sort of wilt and allow all these midges out, covered in pollen --
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uvenu i omoguće izlaz muvicama, koje su prekrivene polenom-
08:58
fabulous thing.
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fantastično.
09:00
Now if you think that's fabulous, this is one of my great favorites.
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Ukoliko mislite da je ovo očaravajuće, sada cu vam pokazati moje omiljene.
09:03
This is the philodendron selloum.
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Ovo je filodendron.
09:06
For anyone here from Brazil, you'll know about this plant.
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Osobe u publici iz Brazila, znaju sve o ovoj biljci.
09:09
This is the most amazing thing.
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Ovo je najčudesnija stvar.
09:11
That sort of phallic bit there
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Ovaj deo koji podseća na falus
09:13
is about a foot long.
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je dug oko 30 cm.
09:15
And it does something
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I čini nešto
09:17
that no other plant that I know of does,
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što ne radi ni jedna druga biljka za koju ja znam,
09:20
and that is that when it flowers --
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kada cveta-
09:22
that's the spadix in the middle there --
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ovo je cvast u sredini ovde--
09:24
for a period of about two days,
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tokom od prilike dva dana,
09:27
it metabolizes in a way
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metabolizam te biljke podseća na neki način
09:29
which is rather similar to mammals.
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na metabolizam sisara na neki način.
09:31
So instead of having starch,
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Tako da umesto da koristi skrob,
09:33
which is the food of plants,
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a to je hrana za biljke,
09:35
it takes something rather similar to brown fat
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ona koristi materijal sličan tamnom masnom tkivu
09:37
and burns it at such a rate
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i sagoreva je takvom stopom
09:39
that it's burning fat, metabolizing,
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da sagoreva masti, stopom metabolizma,
09:42
about the rate of a small cat.
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koja je karakteristična za malu mačku.
09:45
And that's twice the energy output, weight for weight,
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A ukoliko uporedimo odnos proizvedene energije prema težini, to je dva puta više
09:48
than a hummingbird --
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u odnosu na kolibrija -
09:50
absolutely astonishing.
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potpuno zadivljujuće.
09:52
This thing does something else which is unusual.
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Ova stvarčica čini drugu neuobičajenu stvar.
09:54
Not only will it raise itself to 115 Fahrenheit,
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Ne samo da se zagreje do temeperature od 115 Farenhajta,
09:57
43 or 44 degrees Centigrade, for two days,
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43 ili 44 Celzijusove skale, u trajanju od dva dana,
10:00
but it keeps constant temperature.
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nego i održava konstantnu temperaturu.
10:03
There's a thermoregulation mechanism in there
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Postoji termoregulacioni sistem
10:05
that keeps constant temperature.
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koji održava konstantnu temperaturu.
10:07
"Now why does it do this," I hear you ask.
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Ali zašto sve to? Čujem vas kako pitate.
10:09
Now wouldn't you know it,
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Zar nije čudno što ne znate
10:11
there's some beetles that just love to make love at that temperature.
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da postoje neke bube koje obožavaju da se pare baš na toj temperaturi.
10:15
And they get inside, and they get it all on.
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I one uđu u biljku, i bace se na posao.
10:18
(Laughter)
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(Smeh)
10:20
And the plant showers them with pollen,
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A biljka ih okupa polenom,
10:22
and off they go and pollinate.
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i bube odlaze spremne za oprašivanje drugih.
10:25
And what a wonderful thing it is.
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A to je prelepa stvar.
10:28
Now most pollinators
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Većina oprašivača cvetnica
10:31
that we think about are insects,
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o kojima mi razmišljamo su insekti,
10:33
but actually in the tropics,
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ali u stvari u tropskim predelima
10:35
many birds and butterflies pollinate.
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oprašivači su ptice i leptiri.
10:38
And many of the tropical flowers are red,
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Veliki broj tropskog cveća je crvene boje,
10:40
and that's because butterflies and birds
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a to je zato što leptiri i ptice
10:42
see similarly to us, we think,
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mi bismo pomislili, vide slično nama
10:44
and can see the color red very well.
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i mogu uočiti crvenu boju veoma dobro.
10:47
But if you look at the spectrum,
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Ali ukoliko pogledate na spektar boja,
10:50
birds and us, we see red, green and blue
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ptice i mi, mi vidimo crveno, zeleno i plavo,
10:53
and see that spectrum.
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i vidimo taj spektar boja.
10:55
Insects see green, blue and ultraviolet,
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Insekti vide zeleno, plavo i ultraljubičaste zrake,
10:57
and they see various shades of ultraviolet.
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i uočavaju različite nijanse ultraljubičastog zračenja.
10:59
So there's something that goes on off the end there.
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Tako da se nešto dešava na kraju ove skale ovde.
11:02
"And wouldn't it be great if we could somehow see what that is," I hear you ask.
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"Ne bi li bilo sjajno kada bismo mi nekako mogli da vidimo šta je to," čujem vas kako pitate.
11:05
Well yes we can.
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Pa, možemo.
11:07
So what is an insect seeing?
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I šta onda insekt vidi?
11:10
Last week I took these pictures of rock rose,
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Prošle nedelje sam uslikao ružu kamenjara,
11:12
helianthemum, in Dorset.
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"helianthemum", u Dorsetu.
11:14
These are little yellow flowers like we all see,
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Ovo je malo žuto cveće kao što mi svi vidimo,
11:17
little yellow flowers all over the place.
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malo žuto cveće svuda unaokolo.
11:19
And this is what it looks like with visible light.
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I ovako ono izgleda u vidljivom delu spektra.
11:22
This is what it looks like if you take out the red.
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A ovako izgleda ako izbacite crvenu boju iz spektra.
11:25
Most bees don't perceive red.
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Većina pčela ne vidi crvenu boju.
11:28
And then I put some ultraviolet filters on my camera
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Tako da sam ja postavio filtere za ultraljubičaste zrake na svom aparatu
11:32
and took a very, very long exposure
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i postavio veoma, veoma dugo izlaganje
11:35
with the particular frequencies of ultraviolet light
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i koristio tačno određenu frekvenciju ultraljubičaste svetlosti
11:38
and this is what I got.
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i ovo je rezultat.
11:40
And that's a real fantastic bull's eye.
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A to je zaista impresivni centar.
11:43
Now we don't know
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E sada, mi ne znamo
11:45
exactly what a bee sees,
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tačno šta pčela vidi,
11:47
any more than you know what I'm seeing
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ništa više od onoga što vi znate šta ja vidim
11:49
when I call this red.
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kada kažem da je ovo crveno.
11:52
We can't know what's going on in -- let alone an insect's --
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Mi ne znamo šta se dešava u mozgu drugog čoveka,
11:55
another human being's mind.
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a kamoli u mozgu insekata.
11:58
But the contrast will look something like that,
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Ali kontrast bi izgledao nekako kao ovo.
12:02
so standing out a lot from the background.
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Toliko odskače od sredine.
12:04
Here's another little flower --
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Ovo je primer još jednog malog cveta
12:06
different range of ultraviolet frequencies,
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različit opseg ultraljubičastih frekvencija,
12:09
different filters
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različiti filteri
12:11
to match the pollinators.
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kako bi odgovarali polinatorima.
12:13
And that's the sort of thing that it would be seeing.
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I ovo je tip slike koju bi insekt video.
12:16
Just in case you think
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U slučaju da mislite
12:18
that all yellow flowers have this property --
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da svo žuto cveće poseduje ovu karakteristiku -
12:21
no flower was damaged in the process of this shot;
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ni jedan cvet nije bio oštećen u proceduri slikanja
12:24
it was just attached to the tripod,
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samo sam ga postavio na tronožac,
12:27
not killed --
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nisam ubio cvet--
12:29
then under ultraviolet light,
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i potom pod ultraljubičastom svetlošću,
12:31
look at that.
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pogledajte to.
12:33
And that could be the basis of a sunscreen
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I to bi mogla da bude osnova kreme za sunčanje,
12:35
because sunscreens work by absorbing ultraviolet light.
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obzirom da SPF faktor funkcioniše tako što apsorbuje ultraljubičaste zrake.
12:37
So maybe the chemical in that would be useful.
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Tako da bi hemijska supstanca u tome mogla biti korisna.
12:41
Finally, there's one of evening primrose
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Na kraju, ovo je noćna jagorčevina
12:44
that Bjorn Rorslett from Norway sent me --
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koju mi je poslao iz Norveške Bjorn Rorslet--
12:46
fantastic hidden pattern.
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fenomenalna skrivena šema.
12:48
And I love the idea of something hidden.
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I meni se jako sviđa ideja o skrivenim stvarima.
12:50
I think there's something poetic here,
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Mislim da postoji nešto poetično ovde.
12:52
that these pictures taken with ultraviolet filter,
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Pogledajte tu sliku napravljenu uz pomoć ultraljubičastih filtera,
12:55
the main use of that filter
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glavnu primenu tog filtera
12:57
is for astronomers to take pictures of Venus --
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pronalaze astronomi kada slikaju Veneru--
13:00
actually the clouds of Venus.
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u stvari oblake Venere.
13:03
That's the main use of that filter.
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Za to je ovaj filter najkorisniji.
13:05
Venus, of course, is the god of love and fertility,
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Venera, je, naravno, boginja ljubavi i plodnosti,
13:08
which is the flower story.
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a to je priča cveta.
13:10
And just as flowers spend a lot of effort
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I baš kao što cveće ulaže puno napora
13:12
trying to get pollinators to do their bidding,
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kako bi privuklo oprašivače da odrade njihov posao,
13:15
they've also somehow managed to persuade us to plant great fields full of them
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isto tako su nas ubedili da sadimo polja i polja cveća
13:18
and give them to each other
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i da ih poklanjamo jedni drugima
13:20
at times of birth and death,
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kada se rađamo i umiremo,
13:24
and particularly at marriage,
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a naročito kada se venčavamo,
13:26
which, when you think of it,
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što, kada razmislite o tome,
13:28
is the moment that encapsulates
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je momenat koji obležava
13:30
the transfer of genetic material
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prenos genetičkog materijala
13:33
from one organism to another.
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od jednog do drugog organizma.
13:35
Thank you very much.
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Hvala vam mnogo.
13:37
(Applause)
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(Aplauz)
About this website

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