A BOLA PERFEITA de PALITO de FÓSFORO?

Today we are going to make the perfect matchstick. This match will be constructed in a slightly different way. Instead of grinding up a bunch of matchsticks, mixing them with glue, whatever, then Running them through a lathe, we're going to try to make a kind of a matchstick pine Cone with all the heads sticking out, like a kind of a giant strawberry. The way to do this is simply by sticking one stick next to the other. As the head is bigger than the foot of the matchstick, they bend and form a circle naturally. Then, on the top layer, you make it again a little smaller to form a kind of matchstick Igloo. There's only one detail. If I use the matchstick the size it is here, this Ball will be gigantic. So, we will need to do some math first. Look at that, 15.2 centimeters. Let's follow this account… It would make a ball 30.4 cm in diameter, almost a soccer ball, in fact, the soccer ball is 22 cm in diameter. It's much smaller… But okay, let's make another account here. I'm going to make A stack of matchstick that have three layers of 10, then I measure the area on the Front here to see how many matchstick are needed to fill a given area. I need 30 sticks for 3 cm². And now it's just a matter of calculating the area of That ball, and then we need to get the Mathematics book from Manual do Mundo and See how to calculate the area of a sphere. Four Pi R². My radius is 15.2, so 15.2 multiplied by. 15.2 multiplied by pi multiplied by four. 2,903. Doing a proportion calculation here, a rule of three, we will have, with all the broken ones, 28,648 matchsticks. Which would make 716 boxes of this one. If I took three seconds to place each matchstick, It would be more or less 24 hours of uninterrupted work without taking a shower, Without going to the bathroom, without eating, without anything. In conclusion, We need to make this ball smaller, because the balls in the Manual do Mundo, in general, Have a much smaller radius than this one, it's annoying to have a giant ball there, It doesn't make much sense. So I need to do another calculation to figure out how I would go about getting a smaller match. These sticks are very irregular, each Stick has a different size, when you put it in, it doesn't fit right… it's hard to estimate something here, see? Look, if I cut the matchstick to 2.5 cm, I'll have a ball that will have a diameter Of 17.4 cm, which, doing all those maths, would be 9,386 matchstick or 234 boxes, 8 hours of uninterrupted work. Let's do it? First practical problem here. How am I going to cut these 2.5 cm sticks? In the Pliers, I already saw that it doesn't work… I'll try it on a bench saw. I think

This match will take about 20 years, right? Shall we try to use a little technology? This is going to be a bizarre work. Let's try to make a ruler here on the laser, as we always do with balls, so that the Sphere comes out as perfect as possible. Just to give you an idea, I always use the wooden match as a pattern, it was one of The first ones, I think its size is really nice. Difference. That's it for today. Look how beautiful. Our near-perfect size estimate. That was the easy part, because from now on I don't have a ruler around me to tell Me what the limit is, how far I can go with the matchstick… I have to fit one on Top of the other and let it go which way it will. Honestly, I'm not sure how to do these next few layers here without a ruler. The Question is, I can't cut a ruler of the same size… each ruler has to decrease a Little bit until it reaches the top, until it reaches the top it will have a very Small match. According to the calculations I made, there are 29 rulers that I would Have to stack here to reduce the diameter of each one… Cutting the rulers is the least, I have to calculate each ruler. I was able to calculate these diameters using the Pythagorean theorem, I won't put Everything here because the video will get boring, but it will work. Look, I'm going to tell you that doing the math is the least important thing in this Case, the problem is that we have to draw each one of the rulers here on the laser because each one has a different size. This will wear out MDF that never ends, and halfway through we might even have to Change the size of the ruler, because the circles are getting smaller and smaller. Looking at everything happening like this is kind of strange, you can't understand What will come out in the end, but when we put one on top of the other, look at the perfect inverted match. I have to confess to you that it's a lot harder than we thought, I try to put three, Four sticks at the same time here, but then I have to adjust each one, it's slow as hell. I'm not going to do this alone, we're working here with eight hands, two mine, two Mari, two Vitor and two Daniel. The work just gets worse, I'm getting to the top here, the end of the ball on top, And the sticks are starting to be more vertical. So, they slip, we are having to use hot glue to hold them. We have a problem. This half-moon piece, we made it to serve as a guide, in case we were assembling it without these woods.

It has exactly half the sphere, but if we put it here in front, you'll notice that The sphere is getting taller than it should. This is a serious problem, because It ceases to be perfect. It's a white glue goo. It took three days, three days to get to this point, which is not even halfway through Yet. Let's continue without the same pattern. I'll tell you the truth, I'm not satisfied with this match at all. It's cool, it's interesting, but it's far from spherical. It's getting crappy. From the bottom of my heart, I want to set fire to this now. So, the guys are complaining back there that they don't want to set fire. So, I'm Going to do a poll now on Instagram asking people if they prefer that I keep the Match or set fire to it, ok? What the guys decide, I do. I have nothing to do with it. Who told you to ask, right? If I hadn't asked, I could have just set the match on fire and that was it. But not. You give people choice, and that's what they do with you. That's how the world works, right? Let's go to the second round which is the other hemisphere. Let's try to make it a little more perfect than this one to fix the ball. We abandoned the white glue, it takes a long time to dry, the stick keeps slipping On top of it, then we put our hand in it, it slides everything… This time it's 100% hot glue. We are also taking care to align these patterns as much as possible, because perhaps The problem with the first one was a misaligned pattern. But I think it was worse than that. I arrived at a dangerous time here, now I'm going to find out if this second half Will turn into a crushed jackfruit like this one, or if it will be an almost perfect sphere. Will I come to the conclusion that we shouldn't have thought about setting fire? Wow! Let's match, shall we? It's already here… There's not that sphere, sphere, but it's already there, it's with a little guy who's Going to be a match and not a jackfruit. The top is missing, which will have to be done on the eye itself. At these times, we have to think that beauty is not everything in life, right?

Before joining the two hemispheres, I'm going to use these leftover matchstick here. After all, it no longer serves as a matchstick… You know that my intention with This match here is not exactly to make it part of the Manual do Mundo collection, right? After more than seven days of hard work, this is our perfect match… I mean, perfect wouldn't be a word we could use at that moment and match doesn't exactly fit what we did either… So, it's our almost match… No, almost not either, right? It's our attempt at the perfect matchstick. Stop, stop, stop! Once you see it, it won't go away, no, because the best… will stay for the end. Sacrifice time. Wait a minute, we should understand how this thing works before setting it on fire, right? This here is called a matchstick, but this little red head doesn't have the chemical element phosphorus. The match itself is in that little sandpaper that is on the side of the box, and it makes it easier to start the fire. On the matchstick itself, here at the tip, generally, we will have a fuel and an oxidizer. Fuel is easy, right? It's the thing that catches fire. And usually this thing that Catches fire needs the oxygen in the air to catch fire. But we manage to make the Fire a little easier if we give oxygen in another way, and, in this case, what we Have here is something called potassium chlorate. The chemical formula is this one, you can see that in the end there is a lot of oxygen And this oxygen is going to be used in the fire. So, the fuel here in the head, which is usually sulfur or antimony trisulfide, will Catch fire much more easily, because the oxygen it will consume is already in the Head itself, it is not taken from the air. And this whole process will be beautiful to see with thousands of matchstick. Look at the audience that gathered here… Now yes. Catch fire. No fire? Sensational! If I hadn't given the thumbs up, I think it was worth it now, huh? I swore I was going to fall apart the whole thing because of the hot glue… No sign, the bottom part turned white, the top turned black. It doesn't want to catch fire, right? Now yes, huh?

Actually, we found out that the matchstick does not like to catch fire. One ball that I always thought was reaaly cool is the perfect cow hair ball made by The cow itself. It's a really cool story, and the match turned out really nice. Take a look here.