This document discusses several historic tragedies caused by radiation exposure, including the atomic bombings of Hiroshima and Nagasaki, the Three Mile Island accident, and the Chernobyl disaster. It describes the health effects of different levels of radiation exposure on the human body. It also notes that radiation can be used beneficially in medical applications like x-rays if administered properly and in appropriate quantities. The conclusion calls for learning lessons from past mistakes to prevent future nuclear accidents and for reconsidering the use of atomic energy.

1. Historic tragedy caused by the
radiation
C4 s1180128 Makoto Ookawara

2. Table of contents
● Influence of the human body caused by
the radiation
● Atom bomb of Hiroshima and Nagasaki
● Accident three mile island
● Nuclear plant accident of Chernobyl
● Medical care of the radiation
● My conclusion

3. Influence of the human body caused
by the radiation
● Higher than 100 rems have nausea,
vomiting, a headache.
● A white blood cell loses it in higher than
300 rems, and a platelet decreases.
● Half people die in higher than 450 rems.
● Higher than 800 rems are fatal injuries.

4. Atom bomb of Hiroshima and
Nagasaki
● Many people died within ten days from 7
after the atom bomb explosion.
● They did a severe burn in the whole body.
● They also did severe diarrhea, and blood
flowed from the gums.
● The survivor suffered from a cataract and
leukemia, a cancer.

5. Accident of three mile island
● The cooling loss of the nuclear reactor
lasted 16 hours.
● Radioactive gas was scattered in the air.
● 140,000 people evacuated from the area.
● It spent much money and time for the
convergence of the accident, but none of
the injured people appeared.
● Level 5

6. Nuclear plant accident of Chernobyl
● Level 7
● The number of the estimated total death is
16,000 people.
● It exploded without nuclear reaction being
stopped.
● 50 tons of nuclear fuel evaporated and
were released in the air.
● The radioactivity polluted a large area and
was prohibited from an entrance.

7. Medical care of the radiation
● The radiation has a good influence for the
human body if we take appropriate
quantity.
● It is used for the X-ray examination of the
stomach.
● The bone marrow transplantation helps
the supply of the white blood cell.
● The radiology is more unripe.

8. My conclusion
● The person caused the mistake caused by
the radiation many times.
● If we made use of a lesson well and
entered, we should have been able to
prevent the nuclear plant accident of
Fukushima.
● The world stops once and must think
about atomic energy.
● We must build it in oneself in the better
future.