Non-ionizing radiation refers to a type of electromagnetic radiation that does not carry enough energy to ionize atoms or molecules. This means it cannot remove tightly bound electrons, making it less harmful than ionizing radiation. Common sources of non-ionizing radiation include radio waves, microwaves, and visible light. Examples of non-ionizing radiation in everyday life include the signals from cell phones, the heat produced by microwave ovens, and sunlight. While non-ionizing radiation is generally considered safe at low levels, prolonged exposure to high levels can still pose health risks, such as skin damage from excessive ultraviolet (UV) radiation.