The Greedy Cup Has Become Even More Devious

This is called the tortuous cup of Pythagoras. Now a name like the tortuous Pythagorean cup may seem redundant if you know what a normal Pythagorean cup is. This is a normal Pythagoras cup. It looks like a cup with something coming out of the center. Now you can fill this cup. Pick it up as usual and drink from it, but if you get

greedy

and fill it too much, drain the entire cup. This cup works using the siphon effect. ​​There is a tube in the middle part here and when you don't feel it too. tall does not reach the top of the tube and you can use the cup normally, but when you fill it too much it reaches the top of this U-shaped tube and creates a siphon that empties the entire cup, legend says that this cup was created by Pythagoras about 2,500 years ago to punish his companions who were too

greedy

and filled their wine cups too much.

That's why it is also called the greedy cup, but now let's look at the

devious

cup of Pythagoras. Let's notice that there is no central tube area. here now I can fill it with a modest amount of liquid and it doesn't empty, but look what happens when I get greedy, so now we have

more

than enough, we don't want to get greedy, but we do just want a little bit.

more

Look what happens, well we know there has to be some siphon effect here, but where it's actually hidden in the walls of the cup, it's gone.

I have a medium version of the cup here so that as the water fills the cup, it fills up. Up here it reaches this level and then it reaches this tube that goes up and turns to this side and then it starts to flow out this side and comes out the bottom, so it creates this siphon effect that drags it everywhere and it comes out the bottom. It is a much better version than the standard Pythagoras cut because it looks like a normal mug. It doesn't sound like you're drinking from some strange object with something in the center.

If it's so cool, why wasn't it made that way? First of all, this type of design is extremely difficult to manufacture and was almost unattainable until now, but what changed to be able to do it are 3D printers. 3D printers are amazing at making things that would be almost impossible to make with other methods, so until now I have overlooked the fact that the siphon effect works, obviously this effect has been known for thousands of years, but for hundreds For years we did not understand exactly how it worked, for example, the traditional explanation is that gravity pulls downward.

On the outlet side of the tube, this causes a reduced pressure in the part of the tube that is above the water level, so atmospheric pressure pushes water from the upper reservoir into the tube until everything is emptied, but If that is true, then a siphon should not be used. It doesn't work in a vacuum, but look, this still worked, it clearly works well in a vacuum, so it can't be that the atmosphere is pushing it into the tube, but it was recently proposed that a siphon works more like a chain . Let's say you have a chain hanging from a pulley and one side of the chain is at a higher level than the other side, so to get from top to bottom the chain has to go up and over it, but it still works better. time.

The shorter side will pull on the shorter side until the entire chain has fallen to the bottom edge so that the water can pull the remaining water in the tube through surface tension and cohesion, like this chain here, but if that were true, then it would mean that if there are gaps in the line, it would stop the siphon because there is air and the water cannot pull itself, but look at this, this is called flying drop siphon, clearly there is no continuation of water contact between these two tanks, but the siphon effect. it still works, so it can't be explained simply by a gravity effect or a cohesion effect or surface tension or an atmospheric effect, so what's the answer?

Well, actually they are contributing factors to all of these effects and probably

even

more so none of these ways of describing how a siphon works is wrong, but they are incomplete, they are needed all together to really describe how it works, so the safest thing to do is What can be said about how a siphon works is that once the liquid has been forced into the tube by suction or immersion the flow is maintained by the different fluid pressures of the tube openings and before finishing if you are looking a 3D printer to print glasses like this I want to tell you about the sponsor of this video creality they sent me their new Ender 5 S1 Printer this is my third 3D printer and it is my favorite it has CR touch Automatic leveling direct extrusion for printing up to 300 degrees Celsius too It has an improved motion system for up to 2000 millimeters per second squared acceleration It's so fast It has this stable cube frame and the z-axis moves downward as the print builds up, allowing for a very stable print.

You can also connect the Sonic pad to it. The Sonic Pad uses Clippers so you can turn your already fast printer to lightning speed. You can print from the cloud and see your prints update in real time. You can

even

calibrate your printer's vibration to get near-perfect prints. If you want to see the Ender 5s1 with Sonic pad, you can click the link in my description and By the way, I didn't design the mug in this video. I bought it from thingiverse and I will also put the link in the description of this mug so that once you get your new 3D printer you can print it and thanks again to creality. for sponsoring this video and thanks for watching another episode of action lab, you can head over to actionlab.com for new action lab equipment and experiment boxes and even some new Christmas decorations, thanks for watching and I'll see you next time.