Energy is Constant

This quick article about energy gives a concise explanation of what energy is, what types there are and that energy is constant. Even though energy is an abstract idea, we can see the effects of it.

A Way to Understand Energy

To understand the world of energy one has to accept the fact that all energies have a subdivision of either potential or kinetic energy. Then one has to understand the law of conservation o... See More

To understand the world of energy one has to accept the fact that all energies have a subdivision of either potential or kinetic energy. Then one has to understand the law of conservation of energy. Finally one learns about the work-energy theorem. All of this is what readers find out about when they read this author’s explanation of ’What is energy?’ This is a good article but the last section might be a little confusion for non mathematical readers.

So, what is Energy?

In this two page essay, author Bill Robertson takes a stab at making this very abstract concept more understandable . It was a good beginning but now I need more. This is a good refresher or... See More

In this two page essay, author Bill Robertson takes a stab at making this very abstract concept more understandable . It was a good beginning but now I need more. This is a good refresher or first step for someone getting ready to teach a unit on energy.

Defining energy in a different way

The purpose of this article is to define energy in a different way. The author makes a good effort to achieve that goal. However, there are some things that aren't well explained and the aut... See More

The purpose of this article is to define energy in a different way. The author makes a good effort to achieve that goal. However, there are some things that aren't well explained and the author assumes the reader will understand ("It turns out that all kinds of energy – sound energy, light energy, chemical energy, nuclear energy, and on and on – fit into the two categories of kinetic and potential energy.") but I am not certain that is a valid assumption. In this example, the reader may or may not understand that the terms "kinetic" and "potential" are categories that describe the state that the different types of energy are in at a given time. The battery may have potential energy because of the chemicals in it or may have kinetic energy because the chemicals are actively reacting to create the electricity - it depends on what the object is doing at the time that you are describing it. The mention of the term "calculus" gives "fits" to middle level teachers I know and I am not sure t