Non-ionizing radiation

Non-ionizing radiation (NIR) refers to any type of electromagnetic radiation that does not carry enough energy per quantum to ionize atoms or molecules. This is in contrast to ionizing radiation, such as X-rays and alpha particles, which have enough energy to remove tightly bound electrons from atoms, thus causing the atom to become charged or ionized.

Types of Non-ionizing radiation

Non-ionizing radiation can be classified into two types: non-ionizing electromagnetic radiation (NIR) and mechanical radiation. NIR includes both high-frequency (HF) radiation such as radio waves and microwaves, and lower frequency (LF) radiation such as infrared and ultraviolet light. Mechanical radiation, on the other hand, includes sound and ultrasound waves.

Health effects

The health effects of non-ionizing radiation are not as well understood as those of ionizing radiation. While it is known that high levels of non-ionizing radiation can cause thermal burns, the risks associated with exposure to low levels of non-ionizing radiation are less clear. Some studies have suggested a link between long-term exposure to low levels of non-ionizing radiation and certain types of cancer, but these findings are controversial and not universally accepted.

Safety standards

In order to protect individuals from the potential health risks associated with non-ionizing radiation, various organizations have established safety standards. These standards set limits on the amount of non-ionizing radiation to which individuals can be exposed. The World Health Organization (WHO), for example, has established guidelines for exposure to different types of non-ionizing radiation.

See also

• Electromagnetic spectrum
• Ionizing radiation
• Radiation protection
• Radiation therapy

References

Non-ionizing radiation Resources
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