Demo 1 - Glass full of pins

Short Version Of This Demo

Materials you will need to for this demo you will also need water for this. There are 1500 pins in the bowl.

The major thing you need to know that the table or the surface you put the whine glass on is supposed to be straight as in its not supposed to lean on one side because if it those you will not be able to see the bubble it will make when you done and the water will spill.

1 st you need to fill the whine glass with water.

2 nd you are going to start adding needles in slowly until you put in all the needles in and when your done you can see that a bubble is formed if you cant see it you can lean to the side and then you might be able to see. =)

Here are some pictures of how it should look.

In here i have 15 pins

In here I have 800 pins

In here I have 1500 pins as you can see it created a bubble on the top.

Also you can see the later it has created in this picture too.

Surface Tension is a property of the surface of a liquid that allows it to resist an external force. It is revealed, for a example, in floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects to run on the water surface. This property is caused by cohesion of like molecules, and is responsible for many of the behaviors of liquids.=)

One of the examples is a bug called water strider which looks like this