The force between electrical charges is kind of a big deal—without it, the universe would be a primordial soup and you would not exist. That force is determined by the electric constant.
Related Posts
You Can Approximate Pi by Dropping Needles on the Floor
Who needs a supercomputer when you can calculate pi with a box of sewing needles?
Could You Use a Rowboat to Walk on the Seafloor Like Jack Sparrow?
In Pirates of the Caribbean, Jack and Will use an overturned dinghy to hold air underwater. Madness or brilliance?
How to Use Physics to Escape an Ice Bowl
Here are three smart tricks, based on an understanding of frictional forces, to beat a slippery slope.