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. The Three Mile Island accident occurred due to maintenance worker errors, forcing 140000 people to evacuate near the plant. The Chernobyl disaster released radiation equivalent to ten Hiroshimas and killed over 16000 people.

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.