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There are several sources of natural or background radiation for people.

First, there are naturally occurring radioactive elements in the crust of the earth which have been present since the earth's formation. These can irradiate people in several ways.

  • They can irradiate people externally because the soil and rocks all around us (and some building materials such as concrete and brick) act as radiation sources.
  • Plants and animals that we use for food take in the radioactive elements and we ingest them along with our food.
  • Some of the radioactivity is present in the air and we inhale it along with the air.

Second, there are radioactive elements which are produced by interactions of cosmic rays with the atmosphere, the best known being carbon-14 and hydrogen-3 (or tritium). These can irradiate us in much the same ways as the elements discussed above.

Third, we are constantly irradiated by cosmic rays.

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13y ago

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What is background radiation List some of its sources?

Background radiation is the nuclear radiation that arises naturally from cosmic rays and form radioactive isotopes in the soil and air. Some of its sources are : the sun, heat, soil, rocks, and plants.


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After exposure to radiation, you should seek medical attention to assess your level of exposure and receive appropriate treatment. It is important to follow the guidance of healthcare professionals to minimize any potential health risks associated with radiation exposure.


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From which direction do you receive background radiation from the big bang?

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How much radiation do you receive per year in your lives?

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How do you prevent exposure to radiation?

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How much radiation do you get from flying?

The amount of radiation you get from flying is low and considered safe. The level of radiation exposure during a typical flight is similar to what you would receive from a chest X-ray.


Why are children more at risk from radiation?

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Is there a amount on how much radiation one can receive on brain?

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Why is it not safe for the technician to be in the room when the x-ray is taken?

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