WARNING: Radiation From Cell Phone Strong Enough To Pop Popcorn. Collectively, five cell phones were able to pop popcorn kernels within seconds. Electromagnetic radiation operates your cell phone, which is the same frequency range of microwave signals. Microwave radiation causes dielectric heating, and human tissue qualifies as a dielectric material. This means that the tissue on your face will experience an increase in temperature when your cell phone is in use. Radio signals that are created by cell phones will be absorbed by the skull, and could cause a serious future health risks. It is always recommended to use ‘hands free mode’ as much as possible. See the experiment below for yourself, as this radiation is strong enough to pop popcorn!