Why does thunder seem to rumble on for a long time after a lightning strike?

The rolling sounds of thunder are some of the most amazing sounds nature produces.  But how do they get that rolling sound?  Well it all has to do with the speed of sound.  The speed of sound in air is about 770 mph, or 1129 ft/s.  This is a variable speed, based on perfect atmospheric conditions.  Of course in a thunder storm, conditions aren't perfect...  Anyhow, if you have ever had a lightning bolt strike close to you, you will be familiar with the fact that it sounds very different up close.  A close strike sounds like an explosion or gunshot, a very loud bang, followed by the

June 14th Weekend

This weekend my friend Exkalibur visited me in Buffalo, NY.  Exkalibur is a fellow Emergency Service 'whacker' like myself, and also a train 'foamer'.  We had hoped to see some good structure fires this weekend, and generally have fun driving around the Buffalo area calling in suspicious people, and helping out the police whenever possible, without getting in their way.

RF Sites: Safety

I wanted to take the time to discuss the topic of RF safety. Specifically in regards to transmission facility sites. First of all, I want to point out that, no... RF from normal radio frequencies will not give you cancer. However there are other health effects which various frequencies and power levels, can cause in humans. Such effects are Body Heating, and RF Burns and Shocks. These 2 issues are instant effects which have never been disputed.


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