Learners will blend physics and engineering as they make and test their own vinyl record players using a rotating drill, a large-gauge sewing needle, and cups of various sizes and materials to serve as a sound amplifier. The key takeaways of this lesson are:

  • Amplitude is a basic property of a sound wave
  • Some materials amplify sound better than others, while some will vibrate more freely to produce better sound quality (timbre)
  • Analog signals are captured in sound recording studios, encoded in a master disc, and stored in the grooves of a vinyl record where they are "read" by a stylus.