1. Playing Music With Palm Pipes (PCV)
The Physics of sound
Playing Music With Palm Pipes (PCV)

2. What is Sound?
Sound is a mechanical wave, or a wave that transfers energy, that is a fluctuation of pressure transmitted through some medium (like air or water), composed of frequencies which are within the range of hearing
Sound is produced when an object creates vibration
Humans can hear within the range of 20 Hz to 20,000 Hz (Hz or Hertz - is the unit of frequency or number of vibrations per second)
If the end of the tube is uncovered such that the air at the end of the tube can freely vibrate when the sound wave reaches it, then the end is referred to as an open end. If both ends of the tube are uncovered or open, the musical instrument is said to contain an open-end air column.

3. Comparing pitches
White Tubes – C 261 Hz cm Red - D 293 Hz cm Orange – E 329 Hz cm Yellow – F 349 Hz cm Green – G 391 Hz cm Blue – A 440 Hz cm Purple – B 493 Hz cm Black – C 523 Hz cm

4. Can we play a song without instruments?
Green Green Orange Green Blue Green Orange Orange Red Orange Red Green Green Orange Green Blue Green Orange Red Orange Yellow Orange Red White

5. Orange Orange Orange Orange Orange Orange Orange Green White Red Orange Yellow Yellow Yellow Yellow Yellow Orange Orange Orange Orange Red Red Orange Red Green

6. Green Blue Green Orange Black Blue Green Green Blue Green Blue Green Black Purple Green Yellow Orange Purple Blue Green Green Blue Green Blue Green Blue Green

7. Why are there different pitches?
The pitches change by either increasing the speed or the wavelength or in this case, the wavelengths may be varied by having tubes of differing lengths
The higher pitch the sound the higher the frequency is. The lower the pitch the further away the wave length will be
In a sound wave, the points of interference are called nodes
The points of constructive interference is called the antinodes