Applications of the Coil?

From:  Trevor Riehl [SMTP:triehl-at-compusmart.ab.ca]
Sent:  Monday, April 06, 1998 6:23 PM
To:  tesla-at-pupman-dot-com
Subject:  Applications of the Coil?

Originally, what was the coil created for?

Are there any modern day applications?  Future applications?

To what degree is the HAARP project related to the Tesla Coil?

Are there any books discussing the applications of the coil?