Sound and Light

Overview

Objectives/Goals The goal of our experiment was to prove that light can transmit sound over long distances and to verify what solar panel and what laser is the best for this experiment. Methods/Materials Followed materials are needed: one or more lasers, one or more solar panels, an oscilloscope, a funtion generator, a sound source, an amplified speaker, an induction coil, a power supply, a microphone and alligator clips. A transmitter consisting of a laser and a sound source and a receiver consisting of an amplifier and a solar panel have to be built. Results The results were that the sound that came out from the amplified speaker was alway the same as we put in to the transmitter. Conclusions/Discussion When the laser beam is turned on, current flows through the coil and the laser is lit.The "sound vibrations" recorded on the tape are transformed into electrical vibrations. These fluctuations of the brightness of the laser beam are picked up by the solar cell and are turned into electrical pulses, which are amplified by the speaker or tape recorder and turned back into sound.

Competition history

• CSEF 2011 Electronics & Electromagnetics · Entry S0907

Resources

• CSEF project summary ↗

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

• All Physics and Astronomy projects
• CSEF Physics and Astronomy projects
• Every CSEF 2011 project