so it is pretty much the same thing in terms of your experience of life. when two gears mesh, one will spin clockwise (forwards) and one will spin counterclockwise (backwards). i have two projects which i can offer to begin the process. add to it other goals such as "efficiency" and "tolerance" and you would have a more complete picture. it has traditionally been closed from november to may. continuing our series of fun with science for the holidays, here is a special one – the colorful, glowing led. 