Pure physics, physics, and theoretical physics are related terms that describe different aspects of the field of physics.
Pure Physics: Pure physics, also known as fundamental physics or theoretical physics, refers to the study of the fundamental principles and laws that govern the behavior of the physical universe. It aims to understand the basic principles of nature and uncover the underlying fundamental truths about how the universe works. Pure physics often involves theoretical and mathematical explorations, as well as experimental investigations, to gain insights into the nature of reality.
Physics: Physics, in a broader sense, encompasses the entire field of study that deals with the properties, interactions, and behavior of matter and energy. It includes various sub-disciplines such as classical mechanics, electromagnetism, thermodynamics, quantum mechanics, relativity, particle physics, astrophysics, and many others. Physics seeks to describe and explain natural phenomena and formulate mathematical models and theories to understand and predict the behavior of physical systems.
Theoretical Physics: Theoretical physics is a subfield of physics that focuses on developing and applying mathematical models, theoretical frameworks, and fundamental principles to understand and explain physical phenomena. Theoretical physicists use mathematical tools and techniques to construct theoretical models, analyze their implications, and make predictions about the behavior of physical systems. They often work on formulating new theories or extending existing ones, addressing fundamental questions about the nature of the universe, and exploring the frontiers of knowledge.
In summary, pure physics and theoretical physics are often used interchangeably to refer to the fundamental and theoretical aspects of physics, where researchers seek to uncover the underlying principles and mathematical descriptions of the universe. Physics, on the other hand, is a broader term that encompasses all aspects of the study of matter, energy, and their interactions, including experimental investigations, applied physics, and various specialized sub-disciplines.