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.
March 14 is my favorite day to be a nerd. Across the country, math geeks in museums, schools, private groups and elsewhere gather to celebrate the number pi, approximately 3.14. That's why March 14 -- 3-14 -- is Pi Day. What's more, Albert Einstein was born on this day. A quick refresher: Pi is defined as the distance around a perfect circle, or the circumference, divided by the distance across it, or the diameter.