Theoretical physics relies on mathematical representations to predict the behavior of objects that move or change. Sir Isaac Newton founded the field when he created calculus, the brand of math used to describe change over time.

1. A BRIEF INTRODUCTION
TO THEORETICAL
PHYSICS, BY STEVE
KANZER
By Steve Kanzer

2. Introduction
 Theoretical physics relies on mathematical
representations to predict the behavior of objects that
move or change. Sir Isaac Newton founded the field
when he created calculus, the brand of math used to
describe change over time. Through his use of
calculus, Newton developed a mathematical
description of gravity that proved his laws of motion.
While he primarily aimed to model the movement of
the earth, the sun, and stars, he found that his
conception of gravity also described the motion of
falling objects, pendulums, and other forms of motion
on the earth. Although individuals call the field
“theoretical” physics, it is primarily grounded in
observation and uses mathematics to describe what
scientists have witnessed as the natural behavior of
objects.

3. Theoretical Physics
 Today, however, much of the theory developed by
physicists remains untestable through modern
technology. Theoretical physicists continue to
push the bounds of modern mathematics and
often create new subfields just as Newton did
himself.
About the Author: Steve Kanzer functions as the
Chief Executive Officer and Chairman of
Accredited Ventures, Inc., a venture capital firm
that invests in the life sciences. Outside of his
professional career, Steve Kanzer maintains a
strong interest in theoretical physics.