Trying to describe physics in as few words as possible for my teacher website. SOme ideas below. "Physics lets us describe the world around us with math. That's physics in a spherical nutshell" Physics lets us describe the world around us with math. We go beyond simple arithmetic and use equations, algebra, and calculus to make predictions about how things work in our universe. Whenever possible, we put our models to the ultimate test and perform experiments to temper our predictions.