Covering a range of topics related to the quantum theory of the atom, this site provides a three-part dissection of atomic theory including information on particles, waves, light, electrons, and atoms.

Read this article to help understand and describe Einstein's general theory of relativity.

A learning module that begins with "Freud's Theory of the Id, Ego, and Superego," accompanied by guided reading questions, assessment questions, and discussion questions. The text can be printed as a PDF or assigned online through free...

Explains what is meant by the Theory of Continental Drift, its earliest proponents, the stages of continental drift, the causes related to tectonic plate movement, the evidence that has been found, and how the Himalaya Mountains offer...

Article discussing the impact of technology on different aspects of society. Looks at education, humanitarian needs, prevention of corruption, modernization, global technological shifts, Ogburn's theory of social change, the...

Read a short biography about Albert Einstein, and find out how he discovered the general theory of relativity.

A publication of Albert Einstein's written legacy presented in the original language version with in-depth English language annotation readers can access. This volume focuses on his life and work in Switzerland.

By the end of this section, you will be able to describe the definition, aims, and branches of physics; describe and distinguish classical physics from modern physics and describe the importance of relativity, quantum mechanics, and...

A decent explanation of the concept of time as the fourth dimension. The author discusses Einstein's theory of special relativity and the idea of space-time.

Read about four theories related to deviance and criminology which have emerged within the past 50 years.

This article provides a quick introduction to special relativity.

In this first lesson of a three-part series on space-time, hilarious hosts Andrew Pontzen and Tom Whyntie go through the basics of space and time individually, and use a flip book to illustrate how we can begin to look at them together....

A historical approach to special relativity, giving all the events and names in the history of discovery of special relativity. Many links to these individuals.

Useful biographical information, inventions, and interesting facts about German-born physicist, Albert Einstein, known for developing the theory of relativity.

A college textbook section that explores the kinetic theory. Learn how the kinetic theory relates to ideal gas law and thermal energy. Section includes problems and questions for the students to answer to ensure understanding. Book can...

Astronomer Carl Sagan discusses the possibility of time travel in this audio-enhanced interview from the NOVAWeb site.

This site about Albert Einstein examines many of his theories. It also includes a list of Einstein quotes and references.

Instructional module focusing on the early work of Charles Darwin. Discusses Darwin's key role in supporting and describing the theory of evolution as driven by natural selection. Site also includes an interactive practice quiz and links...

This site from the Internet Encyclopedia of Philosophy is an excellent, detailed introduction to the philosophy of Epicurus. Divided into sections addressing his metaphysics, epistemology, ethics. Includes numerous links to related...

The University of St. Andrews offers a wonderful introduction to set theory that makes the topic interesting and understandable. Includes numerous links to related philosophers, mathematicians, and topics.

This site contains an in-depth explanation of the causes of earthquakes as they relate to plate tectonics, and also has many nice and easy to read pictures, maps, and diagrams of plate tectonics and earthquakes.

Mathematics explains the workings of the universe, from particle physics to engineering and economics. Math is even closely related to music, and their common ground has something to do with a Rubik's Cube puzzle. Michael Staff explains...

Explains what the ecological systems theory is and it relates to child development. Looks at five environmental contexts that impact on a child's life and development. Provides examples of how different events within these frameworks...

Questions related to the electronic structure and atomic chemical behavior of acid and bases.