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.
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--