 Hello, Science Bob.
- Yeah.
- Welcome.
Thank you for being here.
 Good to be here.
 I want to--
 Wow, look at that.
Wow.
 Congratulate you.
I want to start with this here.
 Wow.
Yeah.
 Happy spring break.
That's right.
That's for science and Bob.
- Wow.
- How you doing?
 I am doing great.
 Well, show us
some of the stuff
that you've been
working on here.
 All right, so I
figured we'd start with a
do at home experiment.
- Well, great.
That's fun.
 Something you can do with
the kids when you get home.
- OK.
- Really easy.
You need just three things.
You need a fan--
standard old fan.
 Have one of those.
 Now, you do need
to remove the front,
which is basically removing all
the safety features of the fan.
- Great.
- So just keep that in mind.
 OK.
 You need some toilet paper.
 We have that.
 And then you just need some
tape, and that's about it.
 Great.
All right.
 So really-- so you
remove the front of this.
We're going to bring this,
actually, around on the floor.
It's a little
easier on the floor.
You can come around
the front here.
 OK.
 And we're going to
face that straight up.
And I'm gonna have
you come over here.
 All right.
 And I'm going to give you
one end of the toilet paper.
 OK.
 And we are going to gently
pull out about 15 feet of this.
- All right.
- All right?
It's a little more--
 This is a big step in
our relationship, Bob.
 All right, there we go.
And I'm gonna have you--
 Yeah, that's about
how much I use.
 I'm gonna have you--
it's easiest if this
is up higher, so I'm
gonna have you step
back a little bit,
and just kind of hold it so it's
off the ground, and maybe even
above your head a little bit.
- All righty.
 All right?
And then I'm going
to tape one end--
 Oops.
Sorry.
 That's OK.
It's all right.
It's all good.
 I'm going to tape one end--
 This is like a
CVS receipt, right?
 Yeah.
 Same thing.
 All right, so I've
got one end on the fan,
and I'm going to turn the fan
on, and then we're just gonna--
you're just gonna let it
slip through your hands.
 OK.
 Oh, and here's the
science behind this.
 All right.
 You've got two forces
at work here on a fan.
You've got the
centripetal force,
which wants to go that way.
And then you've got
the centripetal force
creating a vertical force,
which is the wind blowing up.
 OK.
 Normally you don't
get to see these two
forces working
together, so we're
going to try to visualize that.
- Finally they come together.
 Finally, and in
a cool visual way.
All right, here we go.
You ready?
 Yeah.
 And let's see.
I think we're ready.
All right, let go, let
go, let go, let go,
let go, let go, let go, let go.
 Oh.
 Yeah!
[APPLAUSE]
 I like that.
That's nice.
That is cool.
Yeah.
 It's kinda neat.
So here we go.
I'm going to very
slowly attempt to bring
this back up onto the table.
 Uh-huh.
 Without it self destructing.
 Uh-huh.
 And if all goes well, I should
be able to actually turn it,
and go horizontal with this.
[APPLAUSE]
 I like that.
It looks great.
Pretty nifty.
 Yeah.
So I thought we'd create our
first Jimmy Kimmel hashtag.
So if anyone tries this
at home, hashtag it
toilet paper tornado.
- Oh.
- And we'll share--
 That was my wrestling name.
 Yeah.
 All right, there you go.
All right.
All right.
Very good.
 Let's come on back here.
All right, we're going
to start off over here.
 Well, this is the saddest
birthday party ever, isn't it?
 All right.
Believe it or not, we're going
to gear up for these balloons
here.
- OK.
I like when we gear up.
 All right.
So a little bit of
interesting science--
I've gotten some people who
have been confused by a sign
that they've seen in a hospital.
And the sign reads no
smoking, oxygen in use.
 OK.
 Which would make you
come to the conclusion
that oxygen is flammable.
 Oxygen is not flammable.
 Well, that's what
we're going to find out.
 Oh, OK.
 All right.
So 100% pure oxygen, and this
is my world's tiniest tiki torch
here.
- OK.
 So I've got a lighter, so
here's what we're going to do.
We're going to find out if
oxygen is, in fact, flammable.
I'll light this.
You're going to bring it
up to the oxygen balloon,
and we don't need
these just yet.
 OK.
 And if it explodes,
we'll have an answer.
If not, we'll know
it's not flammable.
All right, so there we go.
We light that one,
bring it over.
100% oxygen. Yeah, I know.
Kind of sad.
 Yeah.
 All right, now--
we're going to come back
to this in a second.
We're gonna back to the
oxygen. But right now
I've got this one,
which is 100% hydrogen.
 OK.
 Now, we've played
with hydrogen before.
 Oh, yeah.
Hydrogen is fun.
Yeah.
- Yeah.
Hydrogen's fun, because
hydrogen makes it flammable.
So I'm going to be-- yeah,
hold the end of that.
We're gonna see about
100% hydrogen looks like.
We might want to
put these on now.
 OK, but what about-- nobody
in the audience has these.
 And if you're in
the audience, you
probably want to cover your
ears a little bit, all right?
- All right.
- Terrific.
Here we go.
100% hydrogen meets fire.
 There we go.
That was good.
 All right.
So-- now, let's
answer the question
as to why they have those
signs in the hospital,
even though oxygen
is not flammable.
In this balloon we have two
parts hydrogen, and one part
oxygen. So we take that hydrogen
balloon that just blew up,
but now we're going to give
it a good source of oxygen,
and we're going to see if
it burns any differently.
 Mhm.
 This one, folks, you
are definitely going
to want to cover up your ears.
 OK.
 All right?
Good.
All right, they seem ready.
This one's for you.
Here we go.
 See, they weren't
covering their ears.
I could tell.
All right.
 All right.
Here we go.
So this is two parts
hydrogen, one part oxygen.
Here we go, in 3, 2, 1.
[CROWD GASPING]
[APPLAUSE]
 Wow.
 Like a baseball.
That's pretty-- that was--
- I'm guessing they felt that.
 I could feel that.
Yeah.
 You could feel that.
So that's why you don't
want oxygen anywhere near--
 This is how the
old man in "Up" died.
 Oh, no.
All right.
 All right, what
else do we have--
- Come on over here.
- Science Bob.
 All right, so here we have
kind of a cool invention.
 Yes.
All right.
 This is known as
a vacuum cannon.
 OK.
 All right, so we're going
to bring you around here,
and here's basically
how this works.
It's simple-- design
is pretty simple.
We have a clear PVC tube.
 Mhm.
 At the end of the tube
are two mylar, which
is like little
plastic, ends to it.
And we have a vacuum pump.
So this, instead of
pushing air into it,
is going to suck
the air out of it.
Now, what you're going
to do at the right time
is you're going to pierce
this membrane on the end.
- Do it now?
- Not yet.
 OK.
 And all of the air going
to rush in very, very, very,
very quickly.
So we figured, what's the
nerdiest thing that you could
do with an air cannon, and
we came up with the idea,
is it possible to send
Superman literally
faster than a speeding bullet?
 Yeah.
I mean--
 That would be cool, right?
 I mean, it's how
the intro goes.
Sure, yeah.
 And we're going to
see what happens when
we send Superman
faster than a speeding
bullet into a brick wall.
- OK.
All right.
Here we go.
 We're going to crank this up.
There we go.
You might want these.
- Oh.
Really?
- Yeah.
 OK.
So everyone plug
their ears again, huh?
 Yeah, yeah, plug
your ears again.
 Wow.
 All right, I'm going to
check the meter over here.
Oh, by the way, our
piercing device--
there you go.
All right, we're
still lowering--
all right, come on
around this end,
and you're just going to
hit it right in the middle
when it's time.
- All right.
 All right, Superman is ready.
Here we go.
Superman at the
speeding bullet speed--
Oh.
Wait, let's go see.
Let's see.
You got it.
Let's see what's
left of Superman.
Almost went through.
 Oh!
Superman's dead, everybody!
Oh, my god!
 Yeah.
 Wow.
Let's look at the replay here,
see what happened to Superman.
Somehow Science Bob managed to
out-Lex Luthor Lex Luthor here.
All right, Bob, I
love it when you give
me a giant blaster like this.
What's going on?
What is this called?
 So we've got a pressure
release over here.
And when you pull
on the trigger,
that's going to move
a valve over here.
We're just going to throw all
of this air down this barrel.
 Mhm?
 Now, the barrel is filled
with a number of cucumbers.
Right?
- All right.
 And then at the
end of the barrel
is eight stainless steel,
razor sharp blades.
 Oh.
 So the idea is that--
- That seems like a great idea.
- Yeah.
See, it's great.
So the idea is that--
I don't know-- three
cucumbers might take you,
what, five minutes to chop?
- Yeah, something like that.
 We're going to try to
do it in 20 microseconds.
 All right.
Here we go.
 So here we go.
You're going to point it
at our little salad chute
there, which should gather
all of our ingredients.
 Tell me when.
All right.
Ready-- 3, 2, 1.
Fire!
See that?
 Wow.
Let's have a look
at that in-- yeah.
 Look at that.
 That doesn't seem
practical, but--
 Yeah.
See?
Isn't that great?
- Yeah, it looks delicious.
Yeah.
 Now, the next one--
what if we could
create an entire salad?
 Oh, that was the little one.
 Come on down here.
Come on down here.
 All right.
 All right?
So--
 Wow, it does smell
like cucumber in here.
 So let me show you
what we've got here.
 All right.
Thank you, fellas.
 So we've got a number of
various salad components,
from lettuce, to
peppers, and that
will be able to make our salad.
 Wow.
 Now, you're going to need
to lower your mask for this.
 OK.
I'm gonna lower my mask.
 We also have your
electronic menu here.
 Carrots, apples, tomatoes.
 So just flip on what
you'd like in your salad.
 Well, I want everything.
 Oh, all right.
 Let's put an everything salad.
There we go.
- Great.
 All right.
 All right, now,
flip that switch.
That's gonna arm it.
 I've flipped that up.
- Now everything is armed.
- OK.
 All right, here we go.
Hit that button.
 I'm ready.
Here we go!
Whoa!
Wow!
Look at that.
Science Bob Pflugfelder.
Check him out on
Instagram, Science Bob--
