Muslim Scholars discovered that Willow Bark can help with pain (aspirin). Those contributions still influence us today by giving us the proper medication we can use to heal injuries or help with pain. Ancient Water Clocks were used to measure time by a regular flow of water. The creation of the Water Clock is still used today, just a little differently. Now, some modern Water Clocks are keep time by using a pendulum, but use the water for other purposes, like using the water to drive the clock by using a water wheel. Also, pi is a contribution that is still used today. We use pi to calculate the circumference, diameter, radius, and centre or origin.