Steve posted a video "with Matt Parker" and Matt posted "with oranges"

1:25 Normal person: "because your hands are too small" Mathematician: "because your hands are finite"

When life gives you oranges, make spherical lattices with them

I started watching this video, but the intro made it sound like it was a follow-up to the video on Steve's channel. So I paused and went and started watching the video on Steve's channel and he made it sound like it was a follow-up to this video. The infinite loop made my brain crash, thanks.

"If feel like I've been accepted by your culture." "You haven't." LOL that was the best nonchalant burn ever...

The orange companion cube will never threaten to stab you, and in fact, cannot speak.

very simple and elegant work. "Let me just rotate by tau/2 radians", I could feel the frustration in your voice Matt

I love how us normal people go: "Oh, ok - so this is the best way to pack spheres (in our physical world)." And then end it there, but a mathematician goes: "Ah! But what about n-th dimension? Let's see how they stack in 23 dimensions."

"Okay, so this is a bit awkward, but we're gonna try something even more awkward now" Story of my life.

i finally found the guy from my math problems.

"When life gives you oranges, make a tetrahedron." -Matt Parker, Things To Make And Do In The Fourth Dimension

"My studio, my circle constant"

The chemistry between these guys always makes me just smile as wide as I can without thinking about it :D

Matt likes pi so much he's shaved it into the top of his head 1:11

That cutaway at the end xD

loved that they fumbled with the balls in their hands while having a perfect example in the box.

Looked it up. Christingle is a thing. The orange represents the world, the candle represents Jesus, the red ribbon represents Jesus's blood, and candy represents the fruit of the Earth. People do weird things.

I know Matt's thing is maths, and Steve's thing is physics, but I absolutely love the chemistry between them. It's hilarious to watch them rip back and forth. And I'm really starting to wonder if that Methodist orange stick lolly candle thing is actually real or not...

I like how Steve's video says "with Matt Parker," while Matt's video title says "with oranges." Says it all, doesn't it?

I love how you both cut each other off at the end of your videos.

FYI the Christingle is a British thing, not a Methodist thing. It's used by many Christian denominations but very few people outside the UK do it.

MFW I am stuck in a loop trying to figure out which video to watch first because both videos reference the other at the start making me think I should watch the other video first but then the other video references this video at the start making me think I should watch this one first!

"Edible spheres" That's what I'll ask for next time I'm in the grocery store.

I was sitting in my Asphalt Pavement DOT class this morning where we are learning about packing theory for aggregation and all I could think about was this video from 5 years ago. Thanks Matt and Steve for helping me pass my certification.

Not only do I love this video because of how interesting and informative it is, but also because of how entertaining it is. Here I am coming back to it 4 years later for the n-th time for the relentless sarcasm and great chemistry. We love you guys!

Now we know how Matt will calculate pi next year. I image some sort of juicer will be involved.

"Your hands are finite." may be my new favorite sentence.

Love the way you guys made this video as if it were after the one on Steve's channel, then made the one on Steve's channel look as if it was after this one.

I laughed so hard when Matt abruptly cut off Steve's segway into his channel. Love these chaps' banter.

22:20 DENIED

I don't care how geeky this sounds, but i genuinely share their enthusiasm.

I simply love the editing that allowed you to post the two videos in such a way that they cause an infinite loop...

Really enjoyed watching this video, guys. Thanks for the collaboration. If more people knew how much math could make you laugh, there might be more engineers in the world. :)

"Do you have an eighth?" is a real Parker Square of a drug deal. Everyone knows you don't buy partial pills, Matt. That's how you get cheated.

It's incredible how fast your channel has grown. I have loved your channel since the first day I found it a while ago.

Nicely done with having each video follow the narrative of the other! I never thought of using oranges for this! Diagrams provide fewer sticky fingers (not guaranteed).

you got to love the cut off at the end. almost an FU to physics vs applied mathematics

I remember working this out in a first-year chemistry lab. Was a good time.

Nice job, guys, making the videos link up in a cycle. I'm impressed.

Love that you guys made the videos match up no matter the order you watch the two videos.

*When you should revise for your physics test that's tommorow but Steve Mould and Matt Parker have both published new videos just 2 minutes after each other*

0:21 I thought the video was stuck for a moment there XD

Genuine hilarity when you cut him off in the middle of plugging his own video. And in the video you filmed for your channel in his studio no less. Brilliant!

I thought this was a follow-up video to Steve's, so I watched his first. I couldn't figure out which video his one was following up, so I continued, and then went back to yours. Well played you guys, well played.

This sums up why I ended up in Physics rather than maths too. I always preferred the Mathematical aspect of Physics, but because A) my organisation is an utter mess and B) I prefer the answer to the beauty I went towards Physics. Here we have Steve Mould with a "messy" sheet of working out on all directions (look OCD to mine) and Steve wanting to finish at the result rather than the beautiful simplified result. Its something I've noticed throughout my career, Mathematicians want utter perfection and Euler's Formula like beauty, physicists would rather take a few assumptions like sin x = x, and any simplification is to ease remembering. And that is also why Mathematical Analysis never agreed with me, a branch of Mathematics so anal as to demand a proof for "1+1=2" with a Physicist's constant reasoning "because it is" for any semi-obvious mathematical assumption. There's your answer, nobody cares why, lets get to the fun stuff. On a side note, I've always tended towards watching maths videos. Not sure if its because I simply prefer listening to Maths, if its because it gets difficult to find a video with enough Physics left to learn, or if its because the physics I do have left gets a little too in depth for easy watching. Either way, I could watch you two collab forever. Physicist and a mathematician, but you certainly didn't lack any chemistry. Yeah I know, women aren't funny.

*Waits for Steve to try and pour Matt out of a beaker*

I know little to no math and I'm not that bright BUT you guys are entertaining to watch and the math, references and such go way over my head but you do so nonchalantly and speak of it easy that it doesn't make me feel dumb or hurts my brain, thanks you and have a great day

Really great videos. Nice editing, love how you can watch either video first and it works :)

14:28 "that is the least cool use of the phrase have you got an eighth" Damn, wasn't expecting that kind of joke from parker at all lol

Nice video

These two videos recall all the memories on the metallurgy class back on college.

Very much enjoyed the "working it out" intermission in the video, and rather proud of myself for getting the right answer (even if it is just simple calculation) on my own. Thanks for the great video.

"I feel like I've accepted by your culture." No hesitation at all "You haven't."

21:28 Says "do it properly", but cuts the video anyway xD

Turns out the packing of spheres is the basis of an entire engineering branch: materials engineering! The understanding of how (at the atomic level) the packing of spheres/atoms and interactions thereof govern how different materials work! Most commonly studying metals, ceramics, and polymers as materials disciplines. This exact problem is the majority of a intro materials class, crystal structures and lattices! As a materials engineer these videos were lovely to expose this to more people! Well done.

I don't normally do the working out parts of these videos to be honest, but this time I thought I'd give it a go. Turns out I got the right answer. I know it isn't exactly like I've discovered e=mc², but it's always good to know that you have worked something out correctly.

You love to struggle arranging stuff in a square on this channel, don't you ? =D

"Two guys get together and play with balls"

Nicely done with the video looping

I really enjoy watching your videos. I met you at Big Bang Fair this year and you said you would take part in my scicomm quiz. Hope you can still do it

I would really love to hear about the properties of the "jumbled packagings" in higher dimensions, it is rather uinintuitive to imagine there are some that are not regular, so maybe the (prime?) properties of the actual dimension play a role in here?

Which came first? The "Calculating the optimal sphere packing density: with oranges" or the "3000 ball bearings show crystal defects with Matt Parker"?

That "the outro is the intro of the other video" thing in both vids is great. Really great.

I like the illusion that these videos looping with each other. For both videos, the final scene is the same as the first scene of the other video.

9.2 thousandth view! YYYYYAAAAAAAAAAAAAAAAAAAAYYYYYYYYYYY!!!!!! I'm surprised this never happened: Matt: There it is! Pi over root 18! Steve: Tau over root 72. Matt: Jerk.

The square base is not the same as the tetrahedron on its side (though the spacing is the same) as a tetrahedron is platonic and so is the same when placed on any face. There are no Square faces, and the square base has one, so the two shapes aren't congruent.

Totally digging when you bring up some basic 5 minute derivations such as this and the Euler's Disk. This was was a great one because of common familiarity with 45 45 90 triangles and I was able to tackle it with my GF who drew the diagram. As soon as you mentioned the ratical 18 I knew that we needed some right triangles. I wouldn't mind some Calculus problems either, but the Geometry ones are great because I usually suck at drawing pictures and creating equations based on the diagrams without some starting guidance.

awesome vids guys !! Thanks for keeping maths interesting !!

ALL HAIL THE GLORIOUS PARKER SQUARE

You guys should make an infinite number more collab videos together!

Love it! Thanks for the fun crossover!

It kind of both amazes me that this video leads strait into the next one which leads strait into this one, perfect loop.

15:45 NOICE

brb popping down to the shop for some oranges

That spontaneous conversation about the Christingle was hilarious!

lol I just watched Steve's video, and I love how both of you cut off the other person at the end before they could talk about their channel.

Steve x Matt I ship these 2

this is the most adorable math vid ive ever seen. boys playin with balls and fumblin around. yall r cute

The circular videodesign is fab!

What!!! these videos are an endless loop!! :o

Sweets on a Christingle? Bah! In my day we had to make do with cloves!

So, can we call this 6:12 a Parker-Packing?

Props on the never ending loop between videos

These guys are answering questions literally no one has asked before

The amount of spheres that can touch a sphere in any dimension is: n^2 + n 0: 0^2 + 0 = 0 1: 1^2 + 1 = 2 2: 2^2 + 2 = 6 3: 3^2 + 3 = 12 4: 4^2 + 4 = 20 ...

hypertetrahedral = simplexal?

Brilliant how you managed to somehow make two separate videos that blend seemlessly with no actual beginning or ending. #Mindblown

Cand you do a video on continued fractions? I just stumbled upon these, didn't know they existed. It's a pretty cool subject!

Please watch this video on 0.5 speed and try not to laugh.

god i want to ship them so hard. they're both gorgeous, personable, funny, and smart, and they both totally make it a fun way to pass the time thinking about mathematics. i love it when they show up in videos together! that chemistry and banter that they have, so delightful and dreamy. *faints*

Good paint job on the red pipes. Look really super.

two dudes hanging out doing math and physics for fun this is friend goals

pi > tau

Love the hard cut at the end :D

That was a glorious Parker cube!

That cut off was perfect.

I'm stuck in a loop of watching matt's video then Steve's video then back to matt again

6:50 The spheres mark the vertices of a cuboctahedron, if anyone was wondering.

Working it out worked. I'm satisfied. I'll watch the rest of the video anyway :)

i love that they both cut each other off at the end.