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  • Hey, I'm Dianna. You're watching Physics Girl.

  • I have just received a package.

  • A mystery package from Rosanna Pansino,

  • who's another YouTube creator.

  • She did a moon landing cake. So, she's a cool girl, yeah.

  • So, here we go.

  • "You've been selected to participate,

  • "in the Great Gift Exchange."

  • Cool, um, and then there's a URL.

  • Very mysterious... [HUMS] go.

  • Hey, y'all I'm Alton DuLaney.

  • The world's most famous gift wrap artist

  • and YouTube's Wrapresentative Giftlomat Presenter.

  • That's a great pun.

  • You have been selected to be a part of YouTube's Great Gift Exchange.

  • Where you and 11 other creators will participate

  • in a chain of charitable gift giving.

  • And, as a gift, each of you will make a donation

  • to a charity that is important to your recipient.

  • Then you'll be whisked away,

  • to my whimsical wrap shop where I'll teach you how

  • to gift wrap the creator's donation...

  • Oh, cool.

  • ...in a thoughtful way.

  • Now, you're probably curious about what's inside your present.

  • Go open that dang thing.

  • A pie cutter with an, "I love Pie" on it,

  • but, specifically, Pi, the symbol.

  • Like, 3.14. I love Pi,

  • which is true, both counts.

  • [GASPS] Oh, my gosh.

  • This is so cool!

  • It's like a bunch of pie.

  • "Insert rhubarbitrary pun here."

  • I love that.

  • So clearly Rosanna knows that I love puns,

  • and specifically puns of fruit.

  • Because I interviewed a lot of fruit during the lockdown.

  • "Wishing you a very cherry holiday."

  • "You're a great creator and that's no lime."

  • "Turn this potential energy into,

  • "pumpkinetic energy."

  • [LAUGHS] Oh, it's too good.

  • "To open me, give me apple."

  • Give me a... give me a pull?

  • Give me a pull.

  • Oh, it's a little box.

  • Oh, that's so cute.

  • Oh, my goodness.

  • This is so cool. All right, here we go.

  • "Rosanna Pansino has made a charitable donation

  • "to the Malala Fund in your name."

  • That is amazing.

  • The Malala Fund does incredible work for girls' education.

  • This is awesome.

  • Clearly, Rosanna has done her research.

  • She knows that puns are the...

  • "kiwi" to my heart.

  • Okay, let's check back with the rest of that video.

  • And now, without further ado.

  • Aah! I took years of modern dance.

  • Let's find out who your lucky giftcipient is.

  • [AMUSING INSTRUMENTAL MUSIC]

  • -What! -[BOX THUDS]

  • Oh, come on!

  • -[MUSIC STOPS] -Physics Girl,

  • your official giftcipient is...

  • The awesome Alex Wassabi.

  • Cool...

  • Yes, I... love this so much.

  • Alex is a really fun creator.

  • I'm so excited. I get to learn how to wrap like this?

  • See you at the wrap shop.

  • Oh, my voice! [CLEARS THROAT]

  • See you at the wrap shop and enjoy the train ride.

  • I think he and I are gonna make a great "pear"!

  • Okay, that is enough fruit puns.

  • [TRAIN WHISTLE BLOWING]

  • [TRAIN HORN TOOTING]

  • If I left San Diego about two hours ago.

  • I shouldn't have gotten to where there's snow so soon.

  • NARRATOR: And so Dianna rode

  • on our wintry train,

  • Huh, this actually makes no sense.

  • NARRATOR: to wrap with Alton,

  • and her physics brain.

  • [GASPS] It's holiday magic.

  • -Speaking of magic, what's that I hear? -[TRAIN HORN TOOTING]

  • That must be Physics Girl now.

  • I'm so excited to work with Dianna Cowern today.

  • From a young age, she was very interested,

  • in science communication and about making science

  • accessible to everyone,

  • especially, young women, who really look up to her.

  • [DOOR OPENS, CLOSES]

  • Well, hello, Dianna, and welcome to the wrap shop.

  • This is amazing, thank you.

  • I'm excited to do some gift wrapping with you.

  • I've heard much about you.

  • Well, I've heard a few things about you, too.

  • Is it true that we are just stardust, at the end of the day?

  • We are. We are all made of these exploded stars,

  • that in the long, long distant past turned into

  • all these elements that make up us.

  • Speaking of explosives, I think my mind has been blown,

  • -[DIANNA LAUGHS] -just, thinking about that.

  • -Already... -Did you grow up,

  • in a family where gift wrapping was a big part of the holidays?

  • Oh, absolutely. I grew up in Hawaii.

  • -Great, fun. -So, we didn't have, like,

  • the white Christmas or anything. I was such a nerd,

  • and I loved math and I would just fold everything

  • -so precisely. So, I was always like, -Oh.

  • making these... the lines and the creases.

  • -She and I are gonna get along just fine. -[LAUGHS]

  • Well, Alton, I have a question for you,

  • world's most famous gift wrap artist, do you have a piece of paper?

  • -Do I have a piece of paper? -[CHUCKLES]

  • [LAUGHS] Where were you hiding that?

  • How many times do you think you can fold this paper in half?

  • I could fold this paper all day long.

  • -All day long? -Yeah, once, twice.

  • ALTON: Three times, four. DIANNA: Mm-hmm, four. That was four times.

  • -Five, six. -Six.

  • -Maybe seven. -Seven. He's getting off his shoe.

  • -[BOTH LAUGHING] -DIANNA: Interesting.

  • There's sort of an urban legend that folding a piece of paper,

  • more than seven times in half is impossible, but

  • that's not completely true.

  • I have a feeling I'm not gonna be the only one doing teaching here today.

  • There's a girl Britney Gallivan who's a high school student,

  • really, really smart girl. She came up with an equation,

  • to determine how long a piece of paper would need to be,

  • and how thick it would need to be in order to fold it,

  • "n" times. Like, any number of times.

  • I know an equation just appeared on screen,

  • but don't be scared, I love the math.

  • "L", your length, equals "pi" times "t", your thickness,

  • over six, times two to the "n" plus four times two to the "n"

  • minus one. So cool!

  • Using this equation, Britney managed to fold a piece of paper in half twelve times.

  • But it started at 4,000 feet,

  • -Oh, my gosh. -long.

  • DIANNA: And it was the thickness of a sheet of toilet paper.

  • -That must have been one big roll of toilet paper. -[LAUGHS]

  • But there really are some hard limits to this.

  • If you fold a piece of paper in half more than 300 times,

  • you'll end up with a book with more pages,

  • than there are atoms in the universe.

  • -So... [LAUGHS] -[EXPLOSION SOUND]

  • that would be hard to fit in your backpack.

  • Wow, I promise you, Dianna, today we're not gonna fold any,

  • -wrapping paper more than seven times. -Okay.

  • So, I know that your gift recipient is Alex Wassabi.

  • Tell me what you know about Alex.

  • As a scientist, I have done some research.

  • So, here's little bit about Alex.

  • Alex Wassabi is a YouTuber. He's an incredibly positive person.

  • His motto is actually, "If you're not smiling, you're doing it wrong."

  • I love this. We're always smiling here at the wrap shop.

  • He likes to do vlogs and challenges,

  • he just has a really fun channel and fun energy about him.

  • Alex is a big supporter of the Make-A-Wish Foundation,

  • and so, I'm giving a donation to the Make-A-Wish Foundation in his name.

  • -Ah, such a great gift. -Yeah, and also, for fun,

  • I got a small little gift for Alex and his brothers,

  • because they're really big on family.

  • And I love that, so it's something for him to keep and it's something,

  • the charitable donation, that's something that goes above and beyond.

  • Really cool.

  • Well, if you're ready.

  • I was thinking we could head over to my gift wrap laboratory

  • and do a little experimenting with gift wrap.

  • Yes! I'm so ready.

  • Now, I know you live in a scientific world but, here at the wrap shop,

  • I like to have a little holiday magic.

  • -So, if you would snap with me on a count of three... -Mm-hmm.

  • -One, two, three. -[BOTH SNAP FINGERS]

  • ALTON: We disappear.

  • Welcome to my laboratory.

  • This is amazing.

  • So, I thought today we would start out by wrapping

  • the thing that every young scientist would love

  • to get for the holidays, the science kit.

  • Science kit! So many activities in here, so much learning.

  • Today, we'll be using the Japanese art of Foroshiki,

  • which is wrapping with fabric.

  • We'll be incorporating a common scientific fashion accessory,

  • the lab coat.

  • How are you at folding laundry?

  • -I'm more like a [WHOOSHES] roll-up kind of girl. -[BOTH LAUGH]

  • We're gonna start with the lab coat.

  • We're gonna slide this over as if we're dressing our lab kit.

  • And now, here's my new lab assistant.

  • So, Dianna, tell me. What are we cooking up in the lab today?

  • I think some presents.

  • [WHOOPING] My favorite.

  • And now what we're gonna do with the back of this,

  • we're gonna fold it in just a bit.

  • DIANNA: Then you'll tape it on? ALTON: Yeah, I'm just gonna

  • tape that down 'cause the front of this is really gonna be the star of the show.

  • -We're gonna flip that baby over. -All right.

  • ALTON: And now, we're gonna take the sleeves.

  • And we're gonna tie them in the middle.

  • into a little knot as if this were our bow.

  • Oh, cute. It's already nicer than any gift I've ever wrapped.

  • ALTON: I'm gonna slide the goggles down and around over this.

  • Just gonna fit around there.

  • -Yeah. -It needs a little stretching.

  • DIANNA: Oh, that's very cute.

  • And now, we're gonna add one more little flourish.

  • We're gonna add a little paper pocket square.

  • -Is mine too thin? -Yours is actually better than mine.

  • -ALTON: So just fold-up over there, yeah. -Fold it over?

  • And now you're gonna repeat that over and over.

  • DIANNA: Over and over. ALTON: Over and over.

  • Excellent. See, you're true to form.

  • -You're creasing between each wind. -DIANNA: Uh-huh.

  • ALTON: I love that. DIANNA: [LAUGHS]

  • So, now we're going to create a fan fold.

  • -Grab the ridges of that pleat. -Mmm.

  • ALTON: You're gonna pull it stronger with one hand than the others.

  • Oh, my gosh. There's immediately so much geometry going on here.

  • -Yeah, what is my angle there? -I'm up to 45.

  • DIANNA: Ta-da!

  • -ALTON: And now, we're gonna just tuck this into the pocket. -[GASPS]

  • -Oh, that is so cute. -Now, we might have to go under the... little strap.

  • DIANNA: Oh, I love it. ALTON: Ta-da.

  • -And it's easy to take it to the party too. Gotta go. -Yeah.

  • ALTON: I'm off to the holiday party. DIANNA: Oh, so easy.

  • Here we are, back at the wrap bench where things are really gonna heat up.

  • [LAUGHING] I'm very excited.

  • And, Dianna, we're going to create something you may be familiar with

  • coming from the island of Hawaii, a volcano.

  • Yes! [LAUGHING]

  • This volcanic wrap is both an innovative and a thematic way

  • to wrap the gift that

  • really plays off of Alex Wassabi's explosive personality.

  • Because it's gonna blow up. I mean we're gonna blow the lid off this thing.

  • So, the very first thing we're going to do

  • is we are going to adhere this water bottle

  • down to the center of our lid.

  • -And, so, you've got a glue gun there. -Mm-hmm.

  • Please tell me you've used a glue gun before.

  • -Oh, have I ever. -ALTON: Okay, good.

  • And then the next thing we're going to