Double stops

Could someone explain to me exactly what a double stop is, and how it's used in music? Thanks
# 1

Double stop -- as I know them -- refer to 2 note "licks/riffs".
Example.
Pride and joy SRV, Opening riff.
e l---0-0-0-0-0-0-0-3-3-3-3-3-3
b l---3-3-3-3-3-3-3-4-4-4-4-4-4
g lXXXXXXXXXXXXXXXXXXXXXXX
d lXXXXXXXXXXXXXXXXXXXXXXX
a lXXXXXXXXXXXXXXXXXXXXXXX
e lXXXXXXXXXXXXXXXXXXXXXXX
So basically any 2 note riff played in a repetitive fasion. Look into Chuck Berry.
Hope it helps.
2 Cents
Example.
Pride and joy SRV, Opening riff.
e l---0-0-0-0-0-0-0-3-3-3-3-3-3
b l---3-3-3-3-3-3-3-4-4-4-4-4-4
g lXXXXXXXXXXXXXXXXXXXXXXX
d lXXXXXXXXXXXXXXXXXXXXXXX
a lXXXXXXXXXXXXXXXXXXXXXXX
e lXXXXXXXXXXXXXXXXXXXXXXX
So basically any 2 note riff played in a repetitive fasion. Look into Chuck Berry.
Hope it helps.
2 Cents
[FONT=Comic Sans MS]I reject your reality and substitue my own[/FONT]
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[FONT=Comic Sans MS]But it goes to eleven....[/FONT]
[FONT=Comic Sans MS]BYAAAAAAAAAAAH![/FONT]
[FONT=Comic Sans MS]But it goes to eleven....[/FONT]
# 2

# 3