Acoustics

Definitions:
 * Speed: Distance travelled in unit time (m/s)
 * Frequency: Number of complete waves in one second (hz)
 * Wavelength: Distance between matching points of the wave (m)
 * Longitudinal: Vibration parallel to direction of travel
 * Transverse: Vibration at right angle to direction of travel

Sound waves and their sources
All sounds origin in some object that vibrates. The back and forth of the vibration creates more waves after the first one. These waves travel and constantly push air molecules. While the sound is thicker, bigger is the wavelength between each wavethere exist three different source of sound get voice to musical instruments. Vibrating columns of air in the wood wings, vibrating surfaces, like in the drums, and vibrating straights. The distance between the middle of the wave and the top of it its call the laughtness, when the sound it’s big the laugh it’s bigger too. In the straight instruments a same straight can create different sounds. If the straight vibrates as long is possible its called first partial, if the straight vibrates in two segments is called second partial, and when the straight moves in three parts is call third partial. In the second partial the frequency is the half of the first and in the third partial is the four parts.One example that can be use in the column of air sounds is speaking. When we talk or create any sound the air in our lungs up and pass throw the vocal cords and this vibrates creating sound waves that rebound in the mouth and the nasal cavity, then they come out in form of sound. This entire factor together creates al the sounds that we enjoy in our world and that we grasp everyday .