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B1 متوسط انگلیسی 25:38 Educational

Lava vs Lasers - Which Is More Destructive?

Mark Rober · 46,967,328 بازدید · اضافه شده 3 روز پیش

آمار یادگیری

B1

سطح CEFR

5/10

سختی

زیرنویس‌ها (823 بخش‌ها)

00:00

Which has more destructive power.

00:01

Lava or lasers?

00:03

Well, today we're going to answer that age old question

00:06

with a bit of a scientific Face-Off

00:08

by testing each against seven objects

00:10

including a row of glass bottles,

00:12

a bunch of popcorn kernels

00:13

a metal maze

00:15

a can of beans

00:16

a bunch of matches

00:17

a canister of highly flammable butane

00:19

and finally an actual boat.

00:21

Ohhhh

00:22

WHAT!

00:23

And since lava won the last showdown between acid versus lava,

00:26

your questionable safety method practicing,

00:29

Hawaiian shirted reigning champion is back.

00:32

Kevin, the backyard scientist

00:35

and his laser wielding opponent in this match up

00:37

will be a former middle school science teacher

00:39

and a man who has appeared on Jimmy Kimmel Live!

00:41

Possibly more than Jimmy Kimmel himself.

00:44

Science Bob Pflugfelder

00:46

But once again, I'm not just going to be watching from the sidelines

00:49

because each of the seven objects

00:50

will have to face my X factor method of destruction.

00:54

That will be different for each object.

00:56

So, for example, that highly flammable cannister of butane gas

00:59

might be dropping into the path of two katanas

01:01

spinning at 1500 rpm

01:03

in a small room filled with open flames.

01:05

And as expected, the nerd trash talk commenced immediately.

01:09

I love Kevin's cute little backyard builds

01:11

You're going down, Bob.

01:12

Don't go sleeping on the X factor.

01:14

You got another excavator hiding outside?

01:18

I'm basically Oprah here because the winner of today's competition gets a boat.

01:22

Last time you said I'd win a car and we ended up burning all the cars

01:24

Did you win a car?

01:26

Technically, but

01:27

Well with that wee can com–

01:29

William!

01:30

Will’s back!

01:31

It smells like farts in here, Mark. Somebody farted.

01:33

I'll get you out, Will

01:34

AHHH

01:35

William

01:36

yeah

01:36

Don't you have better things to do?

01:37

Yeah, I do.

01:38

I've been planning Open Sauce,

01:39

the world's greatest science and engineering event

01:41

featuring over 150 of your favorite YouTube creators

01:44

you can meet in person.

01:46

June 15th and 16th are the dates

01:48

and you're supposed to fill out your form.

01:49

That's why I'm here.

01:49

Did you just advertise on my channel?

01:51

Yes.

01:51

So here is...

01:53

So here is... money

01:53

worth it

01:54

so in exchange for once again crashing the party

01:56

I sent William off

01:57

to find the official CrunchLabs bin of spare referee uniforms.

02:01

I forgot about that thing.

02:02

It was time to commence our seven item showdown of destruction.

02:05

Starting first with the row of glass bottles.

02:08

What I have in my hand is a 3000 watt, water cooled, high powered laser.

02:12

This thing gets hotter than lava, Kevin.

02:14

Only in a tiny spot.

02:15

That's all we need

02:16

I'm not even going to wear my glasses

02:17

You have to wear your glasses

02:18

Okay, I'm sorry.

02:19

Here we go.

02:21

Oh my goodness

02:21

Whoa

02:22

Whoa, it's like a mini volcano.

02:24

KEVIN: It’s... smoking WILL: Holy moley

02:26

Bob slowly worked his laser

02:28

through every bottle, setting them up

02:29

Oh

02:31

So he could breezily knock them down.

02:34

awww

02:35

That's a good way to cut a glass in half.

02:36

Which was fair enough.

02:37

But could lava do better?

02:39

Let's do it.

02:41

Nice.

02:42

And by the way, if you've ever wondered how to make lava,

02:44

all you got to do is stick some rocks in a graphite crucible

02:46

and then heat them up to 3000°F

02:49

so that the rocks just literally melt and turn into a liquid form.

02:52

Look at that.

02:53

Wow

02:54

That's actually hot!

02:56

Hot lava!

02:57

Whoa

03:02

Whoa

03:09

Whoa

03:11

Oh, you still got one.

03:14

Fill up their–

03:15

Whoa

03:15

Oh

03:17

BOB: That was... horrifying and amazing. KEVIN: That was awesome!

03:19

MARK: For Lava... KEVIN: That was also

03:20

a lot faster than Bob’s

03:21

Can't argue with that.

03:22

And with the flames safely doused

03:24

it was now my turn

03:25

I would say Kevin wins.

03:26

Hey I– I haven’t gone yet!

03:28

KEVIN: I think I won that one right, Will?

03:29

MARK: Wait! KEVIN: I think I won that one right, Will?

03:29

And they would soon live to regret

03:31

ever discounting the X factor.

03:33

Because what they didn't know

03:34

is when it comes to oversize, quadruple banded trigger locked slingshots.

03:37

I'm a bit of a sharpshooter. Mark: Three, Two. one

03:41

Darn it.

03:42

DARN IT!

03:44

This is harder than it looks, alright?

03:46

Frst try...

03:52

KEVIN & WILL: Whoa Mark: Yes!

03:54

And uhh, yeah, my slingshot

03:56

eventually handled all of them.

03:58

Mark, you made this easy

03:59

It's Kevin.

04:00

Let's go

04:01

Next round.

04:02

So lava put the first points on the board as we moved into the second event of the day

04:06

to see which of us could most effectively

04:08

pop some popcorn.

04:09

How did no one think of using a laser to pop popcorn?

04:12

Cause it’s a no brainer.

04:13

Just like you!

04:14

Don’t insult a guy with a military grade laser.

04:17

Three

04:17

two

04:18

one.

04:18

Wow!

04:20

Oh, I see a kernel.

04:21

Look!

04:22

Are they popping?

04:23

Yes!

04:23

What?

04:24

Oh I may have set it on fire.

04:26

This looks repulsive.

04:27

You haven't tasted it yet.

04:28

It's like a little bit burnt.

04:30

See?

04:30

Oh

04:30

are you–

04:31

OH! HEY! WHOA!

04:32

It just needs more time.

04:34

But Bob's time was up.

04:35

Do you have a plan, Kevin?

04:36

No.

04:37

First...

04:38

MARK: Ohhh KEVIN: Just like this

04:39

WILL: Oh man dude BOB: Looks delicious

04:40

MARK: That’s clever WILL: That’s Guy Fieri right there

04:42

And then, here we go. Popcorn.

04:43

Popcorn on top

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