# Glass Magic Trick Video

By on May 6, 2007, with 201 Comments

Jason Mayoff, Zachary Burgeson and Eric Cole liked this video so much that all of them un-connectedly submitted it for me to publish on Mighty Optical Illusions homepage. I am really puzzled with this one. I browsed the web for explanation, and almost everywhere people said that the fluid this guy is purring is just an ordinary water. I wouldn’t bet my allowance on it.

Allrighty then, I’ll let you smart-asses figure this one for yourselves, since I really don’t have a clue. Can we solve it together? In the past, I believe we managed to solve every single puzzle on this website. I hope that the tradition won’t be stopped today. This is more of a magic trick than optical illusion, but when we solve it, maybe I’ll change my statement. For more illusionary videos, be sure to jump to our videos section. Now employ your gray brain cells, and start thinking!

201 Responses
1. me says:

There are definitely cylinders in the cups. at 0:43 you can see the water hit the cylinder and splash off.

2. cardboss says:

It’s a mixture of cylinders and water. Water is in the internal cylinders of the cups (except the small one doesn’t have a cylinder). The amount of space in each glass (not including the different size cylinders) is equal to the amount of space in the glass that is being poured from the cup before. You start with a concentrated white liquid and end with more volume of a diluted solution. BOOM!

• A Guy says:

Wut?

3. Ur moms so unoriginal... says:

Perspective much?

4. hi! says:

Theres a glass inside the main glass, so it is invisible, but its not at the same size, but raised up more. so when the milk is poured, the cups appears to be filled all the way, when actually its the cup INSIDE the cup thats getting filled.

5. Charlotte Gatto says:

I can definitely see the liquid getting less concentrated and the cylinders inside the glasses. Also, what gives it away is that he very carefully pours the liquid around the edge of every glass, except the smallest one. When he gets to the smallest glass he pours it into the center.

6. emma says:

i was too busy dancing to the music to realize what they were doing exactly…eh i’ll watch it later lol

7. Mia says:

there isnt water inside of the glasses because the milk wouldnt have gone into the glasses like that,but then again the milk did do watery at the end :D but i deffinetly enjoyed that little trick :D xx

• Yasmin says:

The person is using milk powder or paint. You can se the residue left in the first cup and how think it is. The cups DONT have cylinders inside. You would be able to see the different levels in the liquid when it is poured of of the biggest glass. The person hold the glasses very still so you cannot see the water wobble. When they pour the last glass though, you can see the water in the glass wobble a little when they start pouring.

8. Ro says:

My guess is there is definitely already water in the glasses, difficult to see because of the purposeful patterned glasses. The liquid is not milk, but something heavier than water and thick. It is poured down the sides so that there is little splash, and it sinks immediately to the bottom, but still mixes with the water. The mixture does become more diluted at the end.

9. David says:

It looks like a clear hub that takes up space in the center of each glass.The hub of the final glass is already filled with water so you have more than you started out with.

10. Dhawal says:

They have inverted glassed inside the glasses. It is because of the lining texture we cannot see the glasses!!

11. Mickey says:

The illusion comes from the fact that liquid takes the form of the container its in. Ex take a 1L coke bottle a 1L glass and a 1L milk jug..each are different shapes..but each hold the same amount of liquid. Got nothing to do with extra material.

12. Brittany says:

Simple really.. yeast is a living micro-organism that is activated when submurged in warm water.. The effect is nearly instantanous and the mixture looks like a watery-milky substance. I could be wrong but that was my best guess..

• Yasmin says:

Yrast wouldn’t make the water expand that much. Yeast works by making air bubbles form inside what it is mixed into. If it was yeast there would be a gross froth on top of the water.

13. vcg says:

i think there is already water in each container that will equal the amount for all the containers when the liquid inside the largest glass will be poured again. :)

• MagicGuy says:

I agree with this one…

14. rich says:

There are clear cylinder in all but the first glass to take up volume

15. Gandy says:

There a rim around the glass on the inside , a glass within a glass if you will and the liquid goes down the rim thus filling the gap and not the glass.

16. Lauren says:

Each glass has a different circumference. The shortest being the widest, tallest being the thinnest. I do that trick when pouring drinks for me and my brothers. I get the short, thick one and fill it. My brother gets the tall, thin one, filled halfway(to the height of my cup) and because mine is so wide and his is so small, I get more.

17. ANuzz says:

There are cylinders in the middle of the glasses, the cylinders have already been filled with water, hence the transparency in the empty glasses and the reason the last glass is a bit more clear than the first.

18. ANuzz says:

Also he never picks up the glasses that he is about to pour into, he holds them pretty firm and still.

19. Jinxxed says:

It’s one of two things, either he is doing what i’d do and use chemistry to my advantage or i’d fill the bigger glasses with just enough water and use baking soda and milk in the first glass to maintain colour throughout the pouring process.

You can kinda guess which way he went considering the residue in the first glass compared to the others.

20. Daniel says:

If you see the first small cup, it is more whiter, and as it pours to the next after the next cup, the water turns more pale and less colorless. So I think the particles in the cups are getting dissolved or mixed forming more and more amount of water.

21. Daniel says:

My second answer can be the cups has some amount of water in it. Increasing the amount and paling the water color

22. rhubarb says:

come on! there are cups inside the others!

23. Austin says:

I think that somehow they made the cups longer going backwards and forwards in the video and every time the cup got taller it got less length going back and forth

24. Purple says:

you can definitely see the white liquid get thinner and thinner so that means there in water in the bottom of the glass….. at 37 sec. you can see water.

25. PeterPan says:

hey…You can actualy notice that the have water in the glasses when he starts to put the liquid from the first glass to the second one…focus on the time that the qhit liquid hits the bottom of the glass you will se that its getting mixed with water…!!!

26. PeterPan says:

freaking keyboard…qhit=white* / se=see*

27. PeterPan says:

You cant notice the water cause of the glasses…

28. d says:

yes if you look at the 2nd glass that they pour into the 3rd glass as he’s tipping it over you can see the edge of a cylinder shape in the middle of it so that the entire glass isn’t being filled the whole way with just what he has and its being mixed with water that is what is in the center of the glass cylinder in each glass to the next it gets the diluted mix of the milk and water… yes i think everyone got it..

29. Ty says:

Looks like vinegar and water expanding with cups ready to go.

30. Ty says:

Vinegar and baking soda I mean, sorry.

31. Regan Clem says:

There is a cylinder filled with liquid inside the middle of each container (besides the smallest one). Notice that his pour always starts on the outside edge, but then he tries to burst the container with the final pours. This made it so there was more liquid at the end than the beginning.

32. anonymous says:

watch as the video plays it skips showin that there was editing they carefully placed their hand to the closest spot to make the video runt together more smoothly. this is a simple video making trick.

33. Psychic_77 says:

It has already been said several times, but no one has offered their proof so everyone else can see it too and just as easily, so here you are.

Each glass has a cylinder in it except the smallest, these cylinders are filled with water at the beginning, then when he refills all smaller glasses he only goes to the top of the cylinder.

0:00 – The very beginning….. because of the darker lighting due to him blocking the light, you can pretty clearly see the blurry water cylinder in each glass.

0:15 – Here you can clearly see the “milk” bounces/splash off the water at the top of the cylinder in the middle of the glass.

0:42 – Here once again you can clearly see “milk” hitting water at the top of the cylinder.

0:48 – Now the blurry middle of each glass is completely gone, because the water has been mixed and poured into the last glass.

0:50 – In the second part of the video, we are now picking up the glasses to make sure we pour only down the side and around the cylinders.

1:10 – The cylinder is clearly in view now, with an extra reservoir of “milk” in the middle of the glass.

1:12 – Even more clearly, you can the see “milk” inside the cylinder splash and resettle as he tips the cup back too quickly.

1:15 – Now you can easily see the “milk” run along the inside of the cylinder and splash down into the cup below, also visible is the ringed top of the cylinder due to lighting.

34. bmm113 says:

There’s extra water in all the cups! :D Solved it! We’re a little late on the draw, but we solved it :D theres water already in the cups, so when you pour the cloudy water into the glass it blends