what does energy mean to you?

What is energy? Where does energy come from? What does energy mean to you?

Stumped? Don't worry, you've come to the right place for a simple explanation. First, it helps to understand the concept of work. Imagine a box that you've pushed from your bed to the closet door. To push the box (or change its movement), a constant force is applied. The physical length between your bed and the closet door is the displacement. When you find the product of force and displacement, work is defined.

Now we'll take a look at power, which can be understood as the rate at which energy is converted or the rate of doing work. Defining power gives you the degree of speed per unit of energy.

In physics, I memorized the definition of energy -- the ability or potential to perform work or cause changes. Energy is the capacity for doing work. But what does that mean? Energy is essential to do work and it's useful to understand the amount of energy required to do work.

Increase your energy consciousness.

Did you know that about 20% of your home energy budget is consumed by lighting? ENERGY STAR explains the differences here. Basically, incandescent bulbs require more power to output 800 Lumens than the CFL alternative and more power means more energy!