1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Light from sound

  1. Jan 28, 2005 #1


    User Avatar

    Is there a cheap way for me to get light from sound? If not, is there an expensive way?
  2. jcsd
  3. Jan 28, 2005 #2
    Maybe you can do the opposite of the sound from light method used by the CIA to listen inside office buildings by using a laser reflected off the vibrating window of the office. The vibrations of course being from the people talking inside which affects the laser beam which is then converted back to sound for big brother. Simple as that!

    Last edited by a moderator: Jan 28, 2005
  4. Jan 29, 2005 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    investigate piezoelectric crystals.
  5. Jan 31, 2005 #4
    Connect a microphone to a LED.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Light from sound
  1. Light OR Sound (Replies: 3)

  2. Sound and Light Waves (Replies: 8)