TI3

[|Generate Radio Waves, a PhET simulation]

[|See the Spectrum of Radio Waves, from howstuffworks.com]

[|Is Cell-Phone Radiation Dangerous?, from howstuffworks.com]

[|Tanning & UV Radiation, from howstuffworks.com]

[|Generating X-Rays, from howstuffworks.com]

[|Frequency Allocation in United States]