Wave Blockers!

CSEF · 2010 Materials Science (Junior Division Only)

Overview

Objectives/Goals My project was to find out what materials could block Wi-Fi waves the best. Methods/Materials Using a transmitter (an Apple Time Capsule) and a receiver (an Apple MacBook Pro), I encased the transmitter in either aluminum foil, plastic wrap, wrapping paper, steel cake pans, a wooden box, a cardboard box or a lunchbox, and recorded the signal strength of the receiver (in bars, Max=4) at different distances up to 80 meters away. I also did a control test with no material surrounding the transmitter. Results The steel cake pans brought the signal down to 0 in both tests, while the cardboard box, lunchbox and wrapping paper always stayed at 4 bars. Conclusions/Discussion My conclusion is that steel is good for blocking Wi-Fi waves, and that a material's thickness may also be a factor when it's blocking Wi-Fi waves.

Summary statement

My project was to find out what materials could block Wi-Fi waves the best.

Help received

Father helped set up the transmitter and took pictures; mother handled the receiver and reported readings.

Competition history

  • CSEF 2010 Materials Science (Junior Division Only) · Entry J1526

Resources

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Source: California Science & Engineering Fair public projects

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