Get Your Science On: Ramphone
What’s Going On?
Sound requires a substance (known as a medium) to go through for you to hear it. Typically, sound travels through the air to get to your ears. In the experiment you use ear muffs to block out the sound. However if you place the speaker directly on your forehead, the sound can conduct directly through your head!
How to build it
Attach MP3 player or radio to a small external speaker. Put in ear plugs or ear muffs, to block out the sound, and put the speaker on your forehead.
