Physics, Fun and Beyond: Electrifying Projects and Inventions from Recycled and Low-Cost Materials > Playing with Sounds: Acoustics > Wireless Telephone: Parabolic Acoustic Mirrors** - Pg. : Safari Books Online

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Physics, Fun and Beyond: Electrifying Projects and Inventions from Recycled and Low-Cost Materials

Physics, Fun and Beyond: Electrifying Projects and Inventions from Recycled and Low-Cost Materials

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5. Wireless Telephone: Parabolic Acoustic Mirrors**

Attune yourself and communicate!

Supplies

plastic ruler (flexible) with measurements, 1 ft (30.5 cm) long
wooden disk, ⅜ to ⅝ in (1 to 1.5 cm) thick and about 2.3 ft (70 cm) in diameter
other wooden pieces, ⅝ in (1.5 cm) thick
thick (stiff) posterboard or cardboard, preferably colored
paper glue or superglue

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