cardiologist holding a heart. Cardiologists treat disease and injury of the heart and cardiovascular system. The Cardiologist Job Description can be divided into two parts; Cardiologist and Interventional Cardiologist. A cardiologist is a physician who specializes in diagnosing, treating and preventing diseases of the cardiovascular system, which includes the heart and the blood vessels.
Newton actually discovered calculus between 1665 and 1667 after his university closed due to an outbreak of the Plague. Newton was only 22 at the time, and he preferred not to publish his discoveries. Meanwhile, in Germany, Leibniz discovered Calculus independently and he was very open with his findings. This led to a bitter dispute between the two mathematicians later known as the Great Sulk. Today it is well known that both men discovered calculus independantly of the other, Leibniz about 8 years after Newton.
During his lifetime Newton developed the theory of gravity, the laws of motion (which became the basis for physics), a new type of mathematics called calculus, and made breakthroughs in the area of optics such as the reflecting telescope. Early Life. Isaac Newton was born in Woolsthorpe, England on January 4, 1643.