Watch the The Edge online guitar lesson by Jeff McErlain from Kings of Tone
The Ebow is a really cool effect, it simulates the sound of a violin bow by creating a magnetic field between the unit and the pickup causing the string to continually vibrate. It is a great effect used in a number of tunes most notably on "With Or Without You". Brian May of Queen used to great effect on "Good Company" on Night at The Opera. Contrary to popular belief Robert Fripp does not use one on David Bowie's Heroes!