Radiowaves and Lasers
How does one make radiowaves travel from place to place
using a laser? This is for a science fair project for a student, and I
have lost the plans. It uses a radio and a laser pointer and a speaker,
and maybe one or two other simple things.
Perhaps a small mirror (even a smooth piece of aluminum foil) placed on the
speaker of the radio? You may also need to adjust where on the speaker you
place the mirror. This probably works best with a paper cone type of
speaker. Try placing the mirror on the center of the speaker and on the wall
of the cone, among other positions.
Be careful to avoid direct eye exposure to the laser!
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Update: June 2012