Every scientific discipline relies on two important concepts to describe and understand the natural world: scientific theory and scientific law. Although these terms are often used interchangeably, they have different meanings and implications in the context of science. In this article, we will explore the difference between scientific theory and scientific law.

What is Scientific Theory?

A scientific theory is a well-substantiated explanation of some aspect of the natural world that is based on empirical evidence, experimentation, and observation. It is a comprehensive framework that explains why things happen and how they work. In other words, a theory is an explanation of facts that has been repeatedly tested and confirmed through various lines of evidence.

Scientific theories are never considered to be absolute truths or final explanations because they are always open to revision or refutation based on new evidence or data. Theories may be modified or discarded if they fail to explain new findings or observations accurately.

Examples of Scientific Theories

Some examples of widely accepted scientific theories include:

What is Scientific Law?

A scientific law is a concise statement that describes a fundamental relationship or principle in nature that has been observed to be true repeatedly in different experiments and observations. It usually takes the form of a mathematical equation or formula that summarizes the behavior of a physical system.

Unlike scientific theories, laws do not attempt to explain why things happen; they only describe what happens under certain conditions. They are considered to be universal truths because they apply everywhere and at all times within their domain.

Examples of Scientific Laws

Some examples of widely accepted scientific laws include:

Key Differences Between Scientific Theory and Scientific Law

The main differences between scientific theory and scientific law are summarized below:


In conclusion, scientific theory and scientific law are two essential concepts in science that help us understand the natural world. Although they have different meanings and implications, they work together to provide a complete understanding of the natural phenomena around us. Scientists use both theories and laws to describe and explain the natural world accurately.