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.
Pi is always the same number, no matter which circle you use to compute it. A = pi*r^2 A very brief history of pi. Pi is a very old number. We know that the Egyptians and the Babylonians knew about the existence of the constant ratio pi, although they didn't know its value nearly as well as we do today.ere's pi to many more digits: 3.14159265358979323846. The area of a circle is pi times the square of the length of the radius, or pi r squared: The modern symbol for pi [ ] was first used in our modern sense in 1706 by William Jones, who wrote: