[GarthB]

Originally Posted by SAump

You may correct one now for the true horrizon distance. Really does matter when lightning is nearby. See http://en.wikipedia.org/wiki/Horizon for details.

The information contained there may or may not be correct, I don't know; but generally speaking, no one who seriously wishes to document facts should ever use Wikipedia.

At school, we will not accept Wikipedia as a reference on any subject. I don't know of any credible institution that does.