About Radiation
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Radiation can be useful but also dangerous to humans. The unit of rem is used to measure radiation dosage based on the harm it causes people. Exposure to radiation can cause nausea, vomiting, headaches and loss of white blood cells. Many people killed by the Hiroshima and Nagasaki atomic bombs actually died from radiation effects, not the explosions. Accidents like Three Mile Island and Chernobyl released radiation and forced thousands nearby to evacuate, resulting in over 16,000 deaths from Chernobyl. Radiation must be handled carefully to avoid serious health problems.
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X-rays have wavelengths between 10-0.01 nm and energies between 120eV to 120keV. They are produced when electrons are accelerated and collide with a metal target, usually tungsten. This causes electrons to be ejected from the target atom or decelerated, producing two types of X-rays - characteristic lines through electron transitions and continuous bremsstrahlung spectrum. X-rays are able to penetrate materials like soft tissue but not dense materials like bone, making them useful for medical imaging. Proper radiation protection techniques must be followed when working with X-rays to limit exposure.
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Radiations can affect human health and cause symptoms like nausea, vomiting, and hair loss. Exposure to radiation decreases white blood cells and can lead to cancers like leukemia and lung cancer. The atomic bombs dropped on Hiroshima and Nagasaki in 1945 exposed many people to high levels of radiation and caused much suffering. Nuclear power plant accidents like at Three Mile Island have also led to radiation exposure incidents. While radiation has medical uses like cancer treatment, excessive exposure can have negative health effects.
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This document discusses the effects of radiation on human health. It describes the units used to measure radiation exposure, the symptoms people experience at different exposure levels, and historical radiation incidents like Hiroshima, Nagasaki, Three Mile Island, and Chernobyl. While there is no direct medical treatment for radiation in the body, the document notes some people were saved through blood transfusions and bone marrow transplants after severe exposure.
Speaking&writing3 slide1
The document discusses the dangers of radiation from nuclear power plants and nuclear bombs. It notes that radiation within 20 miles of a power plant can be dangerous, and that people within 12 miles of the Fukushima plant were able to take shelter. It also explains that there are two types of radiation: ionizing radiation, which can cause cancer, and nonionizing radiation, which is safer and used in devices like microwaves and cell phones. Exposure to high levels of ionizing radiation from a nuclear bomb or accident can cause nausea, tiredness, vomiting, hair loss, diarrhea, and increased risk of death.
Lim Jus494 Nuclear
The document discusses various topics related to nuclear technology including nuclear energy, fission, radiation, doses, and effects. It notes that nuclear technology is often misunderstood due to limited knowledge and biased media representations. While high doses of radiation can cause harm, the effects of low doses are unclear and some research has indicated potential health benefits of low radiation exposure.
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About Radiation
- 1. About Radiation S1180204 Kazuma Abe
- 2. Introduction Radiation is a very useful technology for our life. However, it has some dangerous side.
- 3. Unit of radiation The unit of rem is used measure radiation dosage. The total rems are decided by damages that how much harm people suffers.
- 4. Effect of radiation If we exposure the radiation, radiation causes nausea, vomiting, headache and some loss of white blood cells.
- 5. Hiroshima and Nagasaki Many people were killed by atomic bomb, but they didn't die directly from the actual explosion. Actually, they were killed by radiation effects.
- 6. Three Mile Island There was a mistake by maintenance workers. About 140000 people escaped from near the nuclear plant.
- 7. Chernobyl As a result, the accident release was equivalent to ten Hiroshima. Over 16000 people were killed by this accident.
- 8. Conclusion Radiation is very useful for our life. However, it is very dangerous technology. So, serious problem will be caused by incorrect use of radiation.