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How a Guitar Works By Mr. Lewis Who Invented the Guitar? This question is hard to answer. Nevertheless . . . The guitar might be a version of a middle age instrument called “guittern.” Information and photo from http://www.guitarsite.com/history2.htm , December 6, 2001

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how a guitar works

How a Guitar Works

By Mr. Lewis

who invented the guitar
Who Invented the Guitar?
  • This question is hard to answer. Nevertheless . . .
    • The guitar might be a version of a middle age instrument called “guittern.”

Information and photo from http://www.guitarsite.com/history2.htm, December 6, 2001

who invented the guitar3
Who Invented the Guitar?
  • Another concept is that the guitar was invented around 7 BC. It was called a Kithara (citharis).

Information and photo from http://www.guitarsite.com/history2.htm, December 6, 2001

where can one find the object
Where Can One Find the Object?
  • Guitars are available all over the world. If one wants to buy a guitar, he or she can visit a music store, swap meet, garage sale, or major department store, such as J.C. Penny's.
  • Guitars can also be found in homes, trunks of cars, garages, street corners, etc.
when does the object get used
When Does the Object Get Used?
  • People use guitars daily for practice purposes, for concert performance, for recording sessions, for decorative needs, etc.

Photo from http://www.howstuffworks.com/guitar.htm, December 6, 2001.

what use is the object
What Use Is the Object?
  • A guitar is used to make musicwhich can be therapeutic, especially if the music is relaxing. Nonetheless, some find therapy in smashing guitars, such as Pete Townshend of the musical group the Who. Personally, I think he smashed his instruments for show.

Photo from http://shopping.artistdirect.com/artist_catalog.asp?catalog=THEWHO&store=TheWhoDirect, December 6, 2001.

why would one use the object
Why Would One Use the Object?
  • People use guitars as tools to create music, as props for paintings, to show off their talents, etc.

Photo from http://members.tripod.com/~AFH/index.html, December 6, 2001.

how does a guitar work
How Does a Guitar Work.
  • This presentation will focus on the acoustic guitar. Thus, electric guitars will not be reported. Nonetheless, to understand how either of the two work, one needs to understand the principals of sound waves. Therefore, an investigation of sound properties must first be addressed.
an investigation of sound waves
An Investigation of Sound Waves
  • Sound travels through the air in a wave pattern.
  • When a string is plucked, it creates a disturbance in the air. Air is moved.
  • The louder the sound, the more air that is moved.
  • When a guitar string is tightened, it creates a higher pitch. Sound waves fluctuate (rise and fall) back and forth more quickly.

Information from http://www.howstuffworks.com/guitar.htm, December 6, 2001.

an investigation of sound waves10
An Investigation of Sound Waves
  • When a string is loose, the fluctuation switches back and forth more slowly.
  • An acoustic guitar produces sound in the following way:
      • When the strings on a guitar vibrate, they transmit their vibrations to the saddle that is located on the top or soundboard of the guitar.
      • The saddle transmits its vibrations to the soundboard.
      • The soundboard and body amplify the sound.
      • The sound comes out through the sound hole.

Information from http://www.howstuffworks.com/guitar.htm, December 6, 2001.

the tuning keys
The Tuning Keys

To tighten the strings on a guitar, one uses the tuning keys that are

located at the head (see photo below).

By turning the keys, one either loosens or tightens the keys.

Photo from http://www.howstuffworks.com/guitar1.htm, December 6, 2001.

the bridge and saddle
The Bridge and Saddle

String are attached to the guitar at the bridge, using bridge pins

that go through small holes in the bridge. The bridge sets on the soundboard (see photo below).

The saddle rests in the bridge, and the strings rest on the saddle.

Photo from http://www.howstuffworks.com/guitar1.htm, December 6, 2001.

tension plus distance equals pitch change
Tension Plus Distance Equals Pitch Change

When a guitar string is attached to the bridge and keys and one tightens it, tension occurs. By pressing down on the sting on the fret board which is located on the guitar neck, a person is shortening the distance of the string. That procedure raises the pitch

of the sound, causing the wave to fluctuate

faster. Consequently, beautiful music can be played.

Photo from http://www.carmelmusic.com/stocklist/scanned%20photos/M_1_21_FB.jpg, December 7, 2001.

all in all
All in all,
  • The sounds that a guitar can produce are brought about through physics, in this case wave motion. How one plays the instrument determines what sounds are produced.

Photo from http://www.carmelmusic.com/stocklist/scanned%20photos/Coll_OM_2H_F.jpg, December 7, 2001.