Electromagnetic Spectrum Project

Electromagnetic Spectrum Project
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  • Alright, I understood most of what you said. Although, what's non-ionizing radiation again? Also, what are the differences between ionizing radiation? How does it affect us?
  • What we learned in science class today was quite interesting. But I have a couple of questions...
  • And I know just the person to ask!
  • Although, there are typical misconceptions about electromagnetic radiation. One concept that is misunderstood is the amount of danger that radiation poses. Scientists from the WHO, CDC, and other science organizations, say that actually, higher frequencies in the electromagnetic spectrum are harmful, meanwhile, lower frequency radiation, such as ELF radiation, is not proven to be harmful. Lower frequency radiation is what we're most exposed to everyday. 
  • Sure thing! So, there are two types of radiation in the electromagnetic spectrum, which are ionizing and non-ionizing radiation. One man-made source of x-rays (high energy waves) is airport security x-ray machines, and another man-made object that uses high frequency radiation is sterilization of food and medical equipment. This uses gamma rays.
  • Hey Clara! I heard you passionately speaking about the effects of being exposed to electromagnetic radiation in class today; it sounded like you knew it well! Can you, first, tell me about some sources of human-made and natural-made radiation?
  • These types of radiations are used for these purposes because they are ionizing radiation. Ionizing radiation damages tissues and creates abnormal tissue growth to occur. This is, of course, one of the main reasons why electromagnetic radiation is dangerous--it can kill you, just as cancer is a life-taking tumor which is caused by abnormal cell growth. Meanwhile, a natural source of x-rays are given off from stars, and gamma rays are also given off from stars, or from the sun.  As I had mentioned previously, there is also the non-ionizing radiation, which is in the electromagnetic spectrum. Some of these lower energy radiations would be radio waves and infrared. A man-made source of radio waves would be lightning. , and a man-made source of infrared would be from flames or more, ourselves! One man-made source of radio waves would  are created by transmitters, while infrared is created by lamps. 
  • Alright, so non-ionizing radiation does not damage tissues, or, as far as we know. Non-ionizing radiation is the part of the electromagnetic spectrum, which has far lower energy than high energy radiation, such as the x-rays and gamma rays I had mentioned. To be more exact, non-ionizing radiation has longer, slower waves (the frequency), which makes it have less energy. In this same way, high energy waves have higher frequencies, which means that it has a far shorter wave length and there are more waves per second.  This effects us because it determines whether or not we may consequently get cancer or some other abnormal cell growth. 
  • Alright, thank you for the wonderful explanation!
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