Radiation

Radiation is the third and last method of heat transfer. Radiation is the transfer of heat through light, sound, or heat waves. Radiation can be transfered in many examples. First, a microwave uses radiation to heat things because it has light waves. For example, if you put popcorn in the microwave it will heat up and pop. Bluetooth also uses radiation by transfering sound waves into your ear. However, radiation also has some sideaffects. If you look at the microwave while its heating something, all that radiation can transfer to you and give you cancer. If you sit in the sun all day and get too burnt, or too tan, that can cause you skin cancer. Another example for radiation is when you turn on a flashlight. The light rays come out, which is light radiation.