Expandafoam is a closed-cell polyethylene joint filler for use as an expansion joint filler in brick and blockwork, isolation joints and hinge joints where a readily compressible low load transfer joint filler is required.
The guitar is a fretted musical instrument that usually has six strings. The sound is projected either acoustically, using a hollow wooden or plastic and wood box, or through electrical amplifier and a speaker. It is typically played by strumming or plucking the strings with the fingers, thumb or fingernails of the right hand or with a pick while fretting the strings with the fingers of the left hand. The guitar is a type of chordophone, traditionally constructed from wood and strung with either
Acoustic guitar. An acoustic guitar is a guitar that produces sound acousticallyâby transmitting the vibration of the strings to the airâas opposed to relying on electronic amplification (see electric guitar). The sound waves from the strings of an acoustic guitar resonate through the guitar's body, creating sound. This typically involves the use of a sound board and a sound box to strengthen the vibrations of the strings. The main source of sound in an acoustic guitar is the string, which is plucked or strummed with the finger or with a pick.