So color is a funny thing. Is it green or is it yellow? This is lime green. I would say that this tennis ball is neon yellow. It’s like neon green. Impossible. I think I would say green to be honest. Really? This tennis ball looks to be a very, it’s like a neon greenish yellow. We have the science to prove the color that’s behind the tennis ball. It’s optic yellow, that is the color of the ball. We have been able to very quickly through science and color science understand and know that this color is mostly and mainly yellow with the very slight hue or hint of green. Years ago we used white tennis balls. This is a world of color. So color television came to be and tennis at the time used white tennis balls. So the idea of the International Tennis Federation went off on this quest to develop a color that could be seen. A lot of science went into the choice of optic yellow in terms of making sure that a tennis ball could be seen clearly on a color TV screen. What we’re able to do is mimic that color, hit that color very closely. And if you’ve seen the tennis ball, and you’ve seen this recipe, you do know it gets your attention. This is not your regular yellow. There is something magical about this hue. High chroma is the definition. So you know, again, your eyes say, bam, wow. It makes the world a very colorful place. That’s what we want.
Guys, today we’re taking
a look at how to build a very simple tennis ball cannon made almost entirely out of soup cans. [Captions by Judy V. at Y Translator]
[Music] We’ll show you how
to construct the CANnon… Get it? Can– It’s not that funny. And then, we’ll try out
a few different types of fuel to see what works best. All we need to get started
is eight or nine cans, a little bit of electrical tape, and of course, a can opener. Here’s the basic idea. Several of these cans lined up
together will create a chamber, where pressure can be
built up when our fuel explodes. A tennis ball suspended
about halfway down the barrel will be launched out the front,
flying up to 100 feet. Of course, you need to get
cans that are the right size. The tennis ball should be
able to fit down in, but not have a lot
of extra space on the sides. More importantly though,
is that a lot of cans nowadays have a modified bottom that’s designed
to make stacking the cans easier. While the modified shape of the bottom
does make it a lot easier to stack the cans, it makes it harder to open
the bottom with a can opener. So, what you’re looking for
is a can that’s the same on the top and the bottom. If you go through cans regularly,
you can just save them up as you use them. [Music] Our last two cans,
let’s cut off the tops, but not the bottoms. With one of these two cans,
we’ll leave the bottom fully attached. With the other one,
we want to do a special cutting job where we leave two connection points, one sort of at the top,
and one at the bottom. Then we’re going to try
and fold that bottom in on itself, so it can act as a support
that still lets a lot of air through. With the last can,
we’ll leave the bottom attached, but let’s drill a small hole into it. [Music] After rinsing and
drying all of our cans, it’s now time to attach them together. The one with the hole in the bottom
is the bottom of our cannon, and the support should go
a little over halfway up the cannon. Now, using some electrical tape, we’re tightly going
to wrap a couple of layers around the seam where two cans meet. [Music] I like to make the folded support
at the top of the fifth can. That way there are four cans
above the tennis ball, and five below. Nine soup cans taped together
is giving us a pretty good barrel, and our tennis ball rests right
at the bottom of the fourth can. Let’s give this bad boy
a little bit of decoration so it doesn’t just look like
a bunch of cans taped together. [Music] Our soup can cannon
is now all constructed. Hello. Let’s see if we can’t fire
tennis ball out of this bad boy. When I first started
researching this project, I was told that the best fuel
to use is Zippo lighter fluid, although I’ve had some problems
getting it to work consistently. So, let’s give it a few tries,
and then if that doesn’t work, well, we might move on to something else. Now, the fuel itself is just
going to burn if we light it on fire. So, the goal is to get it
to spread out inside the cans, and then just start evaporating so, we have fuel fumes
filling the chamber at hopefully just the right ratios
that a flame near the hole at the back will ignite all of it, and will create a lot of pressure
launching our tennis ball out of front. [Music] I’m gonna use my little torch. Any barbecue lighter
or regular lighter, even a match should
work just as well. I’m not going to be pushing
the flame inside the cannon, I’m just going to try
and ignite out the back. [Music] So, the Zippo lighter fluid
maybe can work really well, and I just don’t know the right secret. There’s probably just
the right amount of fuel, just the right way
to spread it around, and just the right amount of time
to wait as it turns into fumes. I think I have an idea for something
that will work a little bit simpler. This is methanol, and I’ve done some
experiments with it before, and discovered that it
is pretty good at igniting almost no matter what the mix ratio is. So, I’m just going to try
putting about a capful of this down into our cannon,
we’ll see how that works. [Music] Well, we got better distance. The ball actually
left the cannon that time, although not very quickly. [Music] That sounded pretty good. [Music] Using the methanol,
we’re getting pretty decent distance. The balls are launching 40 or 50 feet, but I think we can do better. You can see that the balls in
these cans are not a perfect fit. This is the closest size
of cans that I was able to find. If somewhere near you sells a can
that holds the tennis ball even better than that, you’re almost certain
to get a lot more distance. Since we don’t have cans that size, I have two different stop-gap
measures we’re going to take to sort of improvised
shrinking these cans down. First, let’s try just
using a wad of paper towels, and pushing that down into the barrel. That should completely
closed off all of the air supply, and we should get a lot
more pressure in the chamber, throwing the tennis ball out a lot harder. [Music] Ah, yeah. Using paper towels as wadding
clearly works pretty well. The other thing we want to try
is restricting the barrel down to a slightly smaller size. This sheet of craft foam is about a dollar, and when cut to the right size, should provide several
successful high-powered launches. The inside of the cans that I’m using
have an 8 and 1/2 inch radius. So, I’ve cut my sheet
to 8 and 1/2 inches, and now will fit this down
as a tube inside the cannon. You can see that the foam nicely fills
the gaps around the tennis ball, and now it just barely fits in. Let’s add a little bit of fuel, and see how much of
a difference the foam makes. [Music] It makes a difference. It makes a huge difference. Oh my gosh.>>Where did it go?>>It hit the tree about
40 feet up and bounced. Oh my gosh. [Music] Boom! [Music] That is a cannon. The heat seems to have warped
the foam by just a little bit, but I’m pretty sure we can
still get some more shots out of it. [Music] Remember to check your
local laws and ordinances before building and
using something like this. Depending on where you live,
it may not be legal to fire one. And of course, always be sure
you’re doing it in a safe environment, and make sure you’re
not pointing the barrel at anything that could ever break or be injured. Guys, that’s not all. There’s more for you to see. That little box up at the top
will transport you directly to our last video and
you should go check it out. The box at the bottom will
show you what YouTube thinks you should be watching next. And this bomb here in the middle
will subscribe you to the channel, so, you never miss a video. Don’t forget to ring that bell,
and we will see you in the next one. Talk to you then.
Hello everybody its Felix here from the
tennis Brothers. In this video I’m going to be showing you some SET 1 highlights
from a doubles match I played in the British Tennis Premier Division 1. I played for Duke’s
Meadows. I think it was about a week ago. It”s a very good level and I hope you
guys enjoy this video. So guys if you want to find out who wins
the game subscribe right now and make sure to watch next week’s video you
Articles, Blog
Be so good they can’t ignore you – Pan Asia Logistics (Wimbledon Edition)
November 20, 2019
The first rule is “Trust Yourself” But what is most important is that you have deep, deep down, deep deep down and ask yourselves who do you want to be? Not what but who? I’m talking about not what your parents and teachers wanted you to be but YOU I’m talking about figuring out for yourselves what makes you happy? Don’t listen to the Nay sayers I mean how many times have you heard that you can’t do this and that can’t do that that has never been done before. As matter of fact I love it when someone says that never, no one has ever done this before because then when I do it that means that I’m the first one that just done it So pay no attention to the people who say you can’t do that. I always listen to myself and say: Yes, you can!
Hi everyone . Welcome to Easy Tennis. I’m Coach Emre. In this video, I’m gonna explain forehand technique in 2 parts Part 1 is about forehand used in short distances. Hold your racket in your forehand grip. It’s eastern, semi-western or western. If you don’t have any idea about forehand grips you can watch my forehand grips video. We don’t use the same swing in every part of the court I mean the swing we use when we’re close to the net is different than the swing we use when we’re behind the baseline. So when you’re close to the net and if you don’t want the ball go far You don’t need to take your racket behind you(backswing) Your racket should be synchronized with the ball. I mean as the ball goes up your racket goes up and down and down the same the ball bounces and your racket goes forward to contact the ball in front of you. Now part 2 Be in ready poasition racket head higher than the grip level For details I have a video about ready position. As the ball goes off your opponent’s strings you should decide your shot forehand, backhand whatever as soon as possible. Starting from the upper body you should turn to your right left hand waits the ball that’s for balance now my chest is facing to the right fence then the racket lag this motion is called “racket lag” my chest turns forward my wrist and my racket follows my turn like this then go to the contact point from low to high start pronation before the contact point. Contact the ball in front of you Brush the ball up and then follow through At contact my chest is facing forward at last, my chest is facing to the left fence. At contact, my racket’s handle is parallel to the ground the racket’s face is perpendicular to the ground you shouldn’t contact like this or this or this or this These are wrong. Your swing should be from low to high from low to high If your ball goes too high you might have opened your racket face at the contact to the ball. If you can’t go over the net you might have not swung from low to high This motion of forearm is called “pronation”. This motion You should start pronation before the contact point. That will create topspin. And then follow through Let the racket go after the contact point Don’t stop it don’t do this Let it go and it will stop naturally Turning your body forward and transmitting your forward momentum to the ball this will create more power but if you are out of balance I mean like this or this then you can’t do it Your spine should be upright. To recab, decide your shot as soon as possible turn to your right left hand here waits the ball for balance racket head higher than the grip level then the racket lag now my chest is facing to the right fence then my chest turns forward the butt cap of the racket pointing to the oncoming ball my wrist in the shape of “L” go to the contact point from low to high start pronation before the contact point and then follow through. Let it go and it will stop naturally. At last, my chest is facing to the left fence. That’s all for this video. In my channel, you can find all the drills you shoul do from the first day you hold your racket. Check out my playlists to do all the drills in order. If you like my video, please click the like button and subscribe to my channel if you already haven’t. See you!
So we know the important part is for
rotation. So how do we get the rotation? We know we turn our shoulders for our
racket arm but the ball toss arm is also very important if we have our ball toss arm very straight we are pretty much doing a somersault what they call shoulder over shoulder but we want to get this movement, this round rotation movement so that would mean that the ball toss arm needs to go out to the side now the ball toss doesn’t go straight up and down there it doesn’t stay there it comes around in a circle comes around in a circle and should land,
if I get it right, it should land pretty much to my left side. We don’t let it bounce of course, we hit it but that will help us get the rotation
contact above our head or where our head was
because we’re moving our head out of the way and get us following through and that’s why you see players following through
off to their side.
La La La La La Hmmm? Wait what? Where’s Gabe? I really, have no, idea! Ugh! Well I’ll just find him myself. Hey guys! *yawn* Sup’ Well Well, looks like you guys are having a good time, Not. Oh man, it’s so boring without Gabe. *sigh* Hey, at least you got me! Well, I’m not going to help you guys today. I need to chill, watch some TV, play some video games. Because i’m really stressed… But you need to help us! No! Please, please! Fine guys, lets get moving. Oww. So Mark, why are we at the mall? Oww. Well the tracking device said he was here, sooo. Where is he now? Wait, you have a tracking device in Gabe?! I have a tracking device on his phone, not in him. Guys, lets check the mall! What do we do now, there is a huge tennis ball in front of us. Uuhhh, ask him if we can have Gabe back. Hey, can we have our friend back? (No response) Uh, should we attack him or what? Uuhhh, maybe we can attack them! Seriously, you just came up with that idea?! Do you guys have any other idea? (No response) Okay then, now we attack! Hi – Ya! Ha. Pew pew pew, pe-pe-pe-pe pew! Hey, cut me some slack! I’m just trying to have some fun, plus you guys forced me to do this! Thanks for saving me, but, Where’d you get the weapons from? I don’t know, probably the director created weapons for us.
Hello everybody it’s Felix and Lucian here
from the Tennis Brothers. In this video I’m going to be going up against Lucian…
in a ten-point tie break. I’m very excited, the conditions aren’t too
amazing the court is a bit slippery and there’s the sun that’s going to be in that persons eyes – so it’s a bit of a
disadvantage. I think we’re going to switch every six points to make it a bit
more even and yeah pretty excited. Also for this time we are not doing serves – just because it’s really slippy It’s gonna be hard to play on but we’ll
give it our best shot So guys if you would like to know where
to get my racquet and Felix’s racquet make sure to go to tennis-point. They’ll
be links in the description of both of our rackets and…let’s do this. So guys this is a tight start. I’m trying to
really get him on the move as it’s slippy and maybe trying to get to the net a bit more So let’s see how we do… So guys – you might have seen, I fell over because you
cannot move. I was sliding all over the place. I think the aim is just to stay
consistent placing high balls and think push him through the court because the ball
slides a lot and it’s really tough to stay in the ralley Guys 5 all, pretty tight with both of
us finding the conditions hard and looking over there we not getting much
traction. I have to stay in the point. Hey guys it’s 7:5 it’s a big point here
hopefully I can get this point and the next one. So let’s see how I do. So guys
9:7 Felix… he got a bit lucky there…but I’m trying to go for a big shot here. So guys I managed to clinch it in the end.
If you enjoyed… make sure to LIKE and subscribe and turn the bell notification on…
you never miss another video. There will be plenty more time tie-break tennis videos to come. That is definitely something to look forward to in the future… I’ll see
you guys the next video…