clix - Lesson 4: How does Sound Travel?
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Lesson 4: How does Sound Travel?
  • 4.1 A speaker
  • 4.2 A slinky spring
  • 4.3 Is air like a spring?
  • 4.4 Does the medium move with the sound?
  • 4.5 Is this true in other cases also?

    Speaker

    We use speakers to listen to music. Speakers are used in mobile phones and in televisions too.

    Have you ever observed or touched a speaker while it is producing sound?

    Does its diaphragm vibrate? 

    Let us watch a video of a speaker producing sound.

     


    Video 4.1(a) : Normal motion video of vibrating speaker




    Video 4.1(b) : Slow motion video of vibrating speaker
     

    Sometimes speakers can create a nuisance when someone plays loud music, especially during festivals or marriages.

    But how does the sound go forth from a speaker?


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