A believer in the theory that the fundamental phenomena of life are to be explained upon purely chemical and physical principles; -- opposed to vitalist.

an atom's way of knowing about atoms

an atoms way of knowing about atoms

a scientist who studies the fundamental properties of matter

a specialist in physics.

A scientist who studies the ways matter and energy act.

A person who studies physics.

a scientist who studies the properties and interactions of matter and energy in all their forms (liquid, solid, gas, and plasma)

A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena spanning all length scales: from the sub-atomic particles from which all ordinary matter is made (particle physics) to the behavior of the material Universe as a whole (cosmology). There are numerous branches of physics and each has its corresponding specialists.