Symmetry Magazine
Symmetry Magazine: Explain It in 60 Seconds: A Theory
The definition of a theory as it applied to science is explained in this brief article. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of different concepts in particle physics.
CK-12 Foundation
Ck 12: Life Science: Scientific Theories
[Free Registration/Login may be required to access all resource tools.] Today most people realize that microorganisms, such as bacteria or viruses, are the cause of disease. This concept is known as the germ theory of disease, one of the...