Oh oh, we're filming, how embarrassing

Wow there was just a huge

Thudding knock on our door which was quite frightening, but nothing is gonna get in the way of DONGs.

What is it oh? I'm not recording on my screen well, let's check out Wikipedia

Okay, we've got dong Lake pretty good. We've got the dong people

Queen dong

The dong language Oh, but what's this? Dong: a segment of the Vsauce YouTube channel.

guys

We made it

We made it

Which brings me to interactive polyhedra.

I love interacting with polyhedra. I'd probably say the icosahedron is my

17th favorite it has 20 sides

and what a beaut it's a platonic solid meaning every single one of its faces is a

regular polygon an equilateral triangle in this case and

Every corner is the same look at this corner. It's the meeting of 1 2 3 4 5 equilateral triangles great

What about this corner 5 triangles this corner 5 triangles? It's a platonic solid guys, and I love it but sometimes

even a platonic solid

Needs to get cut

I'm talking truncation where the corners are

cut off now

what would happen if I cut off a corner if I just sliced right through with the plane on an

Icosahedron well let's take a look all right

So we'd cut right through here that would leave us with a face that is 1 2 3 4 5 sided, a Pentagon.

But then the faces as they are right now

Which our triangles would receive 1 2 3 new sides.

So they would have 6 making them hexagons. Pentagon's and hexagons on the same solid.

That is a truncated icosahedron. A.K.A. a

soccer ball.

Pretty, pretty cool.

Of course David Mccooey's visual polyhedra encyclopedia is way

Way more extensive than the site's I just showed

But we have shown this on a dong before what we haven't shown is the proper way to have a mathematical

breakfast which brings me to George Hart and

A technique to cut a bagel so that you're left with two completely separate

But interlocked rings, that's right these two bagel rings have not been cut and glued back together

This was one bagel, and you could do this yourself in the morning this entire site is incredibly informative

You can learn all about how to make the proper cut to cut your bagel in two pieces that are

Interlocked how delicious now of course you can cut bagels in any way that you want in the morning your life is your life

But if you don't cut them like this you're a loser okay next we've got

Stranger things this site allows you to upload any image that you want, and then it's A.I. will try to understand

what's in the photo it will then create a Stranger Things

styled poster using that image, the poster is pretty much all the same

But what it does is it replaces the word things

With what it thinks your image is a picture of. I'll show you what I'm talking about,

You click the TV to upload a picture, and I will try

How about that picture of a light bulb that we took last time?

Okay, now. It's gonna process and

Stranger lighting not bad right and then here's the bulb in the poster. Let's go again. I'm gonna try something a little tougher

I'm gonna try this picture that draw with Jazza on YouTube made of me as a supervillain and open that one and

Stranger green

Hmmm Vsauce one is green in its theme

That's pretty good, but I'm not done yet what I really want to try is this picture right here

It's a napkin ring and I wonder if it knows what a napkin ring is

Stranger red all right. Let me just say this. I think that if it doesn't have any clue what the image is it just

mentions the color that it is

I'll give it one more chance. I'll upload this photo of me from brain candy live where I'm covered in smoke

Stranger facial hair that's pretty good and the poster looks

Cool look at how my face is just emerging from the storm clouds all right, ooh

The Stroop test alright great, so I love the Stroop test

It's a classic in psychology in the Stroop test you see words

That you can read and those words are printed in a color now your challenge is to in this game here

Report the color that the word is printed in not what the word actually says and it's pretty interesting how difficult this is to do.

There are a lot of theories about why it's so difficult one is that reading and understanding

Comprehending written words is more automatic that when we see a word because we're so used to it

It's habitual

We automatically create a meaning in our mind from that word

But we don't use color that way when I look around the world. I think of maybe what the objects are, but I don't

automatically

Involuntarily think about what colors I'm looking at now some people are better at this than others

but as it turns out the word actually reading what the word says has this kind of automatic primacy that takes away from the

Finite amount of attention you have to pay

Towards things like saying what color the word is printed in let's see how I do play blue. It's written in yellow

Though good got that

blue

yellow

pink

But

Black-blue

Next level I'm ready

Pink no now they move yellow red

But I hit black, but that was just a mistake from the clicking try the level again, yeah

You know what I'm gonna try not saying any words because I think that might give me an advantage

Oh, this is really getting harder

Man Wow with this changing

Background I'm really focused on what the word means not what color it's written in and now there's cats right okay?

I think the cats are easier than the flashing background

I'm gonna go one more level

Okay

You win I defeated all the distractions in 70.2 seconds, can you do better probably next?

general relativity

the comic yeah

This is a pretty cool way to read about how Einstein thought about the world and the thought experiments he used to understand

What became his theory of general relativity you just scroll down and read all of the things that are going on

It's very neat

I really really like it and I highly recommend it, so it's really all I have to say I don't do any spoilers

But check that out. It's science mags general relativity sight okay two more things

Colorado's

Phet website is phenomenal, and we've covered this before but this one relates to my

newest video

And/or my next video depending on how soon I get that done this might come out before then doesn't really matter the point is

pendulums I

Love that here, I can actually

Raise up a pendulum

I'm gonna put it all the way up at 90 degrees and I can let it go and I can see

How it swings now right now, there's no friction, but watch what happens if I have a mass way up here

And then I introduce a second mass

That I will give the same

as to one kilogram, I'll raise it up and

Notice that mass two is further away from the pivot point it should fall more slowly

And it does

Why?

Even interact with the real world when you can do all the same stuff on a computer finally big shout out to brilliant

Org our sponsor for this episode. It's fantastic

I'm gonna play through some of these right now the great thing about brilliant org is that you can choose anything you want

It doesn't even have to be math you know what I'm gonna do science gravitational physics

That's pretty related in my last video. Whoo should we do new tone?

I think we should here we go escape velocity what brilliant

Or does is present you with?

Challenging puzzles that you then have to answer and by answering them whether you're right or wrong you learn a whole bunch of stuff so

Let's do an introduction to gravity mass dependence. Yeah, everyone loves

Mass Newtons studies an apple in his hand he estimates that the mass of the Apple is about 10%

Of the mass of his head how do the following?

gravitational forces compare we have the force that the earth applies to Newton's head and the force that the earth applies to the Apple ah

Perfect so the force of the earth on his head is about 10 times that of the Apple which is

This one e to the head correct. Got it right. I started a one day Street

Alright next what about the force Newton's head applies to the earth?

Well that is also going to be ten times more than what the Apple applies to earth

Correct now with they're just kind of floating in space

I think the force that his head exerts on the Apple and the force the Apple exerts on his head

Guess what guys those are even steven?

Correct only 52 percent of people got this right guess they didn't watch my last video him I right

Smash that subscribe button over on Vsauce 1 to learn more

Continued mass dependence ok the last series of questions shows us that the form of Newton's

Universal force law needs to be linear in each mass

Symmetric in the masses which of these choices is a possible mass dependence of the law well, I already know that it's multiplication

genius alert and can now

finish quiz

quiz complete I

Completed four problems and got four correct guess. I'm done. Just kidding

I'm not go to brilliant org slash dong to continue your educational journey in your life and as always

Thanks for watching