CALCULUS
Khalid also discovered calculus. As he is a newton-like character in the book, so he invented so many things which newton discovered in reality. For example, the law of gravity, inverse square law, tangent to the curve, and other fundamental laws. Some quotes from the book are shown as follows to show his mathematical discoveries.
"he outlined a mathematics of motion, what he called the speed-of-the-speed."Everything is moving."....... And moving objects, say a cannonball , can be measured against these two dimensions. How high or low, how left or right. Placed as if on a map.Then again, the horizontal dimension can mark time passed, and the vertical movement in the single direction. That will make for curved lines, representing the passage of objects through the air.Then, lines drawn tangent to the curve indicate the speed of the speed." (305)

"The attraction is in inverse proportion to the square of the distance away."(330)