Help- How do they make this noise with the guitar?

[IhaveAbellyButton]

In The Strokes' song "Killing Lies," there's a guitar solo that's very unique. The third note they play in the solo (I believe it's a F# if that helps any) sounds unlike anything I've heard before. My question is, is it some type of harmonic? If so, what's the technique to do it?

BTW - This album is so well crafted; Nick's and Albert's guitar playing/songwriting is second to none.

 

[AlacratStore]

The string vibrates :-In this causes the sounding board of the guitar to vibrate at the same frequency. The velocity of a wave through the soundboard is higher than that of the string, so the soundboard causes sounds much louder than the strings.

 

[aalentino]

Guitar consists of string when with pulled by guitarist vibrate and produce a special sound when guitarist press an appropriate thread match with the string .Its depends upon the combination of thread and the string to produce different sound .