How Do You Build A 5Th Grade Radio Science Project?
Radio frequencies, referred to as “RF” in the electronics industry, are signals which oscillate at very high frequencies. Radio, TV and satellite RF signals are used to transmit sound, video and data through the air. Appliances such as TVs and computers, which contain circuitry that operate at high frequencies, radiate RF energy. A fifth-grade science project can build an RF detector to investigate the presence of RF radiation from common household appliances. Remove the lid from a shoebox or tear off the flaps of a similar size cardboard box so that there is one opening to the box. Line the inside of the box with aluminum foil. Tune an AM radio to a spot on the dial where there are no local stations, and all you hear is silence or a soft hissing sound. Place the radio inside the box. The aluminum foil will act as an RF shield, so that when you point the open end of the box at an appliance, any RF radiation detected by the radio will be known to come only from the object you are pointi