In beaker A, you can see the oil and the water existing in separate layers. In beaker B, the beaker is shaken up, which disperses the oil in the water temporarily. When you set it back down again, however, (beaker C), you can see that it separates again. In beaker D, we added an emulsifier.
Why PI Was Created. PI was created to provide high school students a place where they can create their invention ideas. Too often, students conceive ideas that can change the world. Due to insufficient support and guidance, most high school students cannot bring their invention ideas to life.
But why was pi chosen as the symbol for this ratio in the first place? Well, it was introduced by 18th-century Welsh mathematician William Jones, most likely, it's believed, because pi is the first letter of the Greek word for periphery (periphÃ©rion). Here's what it looks like in Greek: ÏÎµÏÎ¹ÏÎ­ÏÎµÎ¹Î±.