Radiation as used in physics, is energy in the form of waves or moving subatomic particles. Radiation can be classified as ionizing or non-ionizing radiation, depending on its effect on atomic matter. The most common use of the word "radiation" refers to ionizing radiation. Ionizing radiation has enough energy to ionize atoms or molecules while non-ionizing radiation does not. Radioactive material is a physical material that emits ionizing radiation.
This shows three different types of radiation and their penetration levels
This shows three different types of radiation and their penetration levels
[edit] Types of Radiation
* Electromagnetic radiation: (Energy in the form of electromagnetic waves or photons.)
o Non-ionizing
+ Thermal radiation (heat radiation)
+ Radio waves
+ Microwave radiation, as used in microwave ovens
+ Infrared radiation (IR), produced by heat
+ Visible......
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