1. Article #2
Radiation Effects on Humans

2. Units of Measurement
The unit used to measure radiation dosage is the rem. which
stand for roentgen equivalent man. It represents the amount of
radiation needed to produce a particular amount of damage to
living tissue.

3. Effects of Radiation Exposure on
Human Health
Exposure of Just 25 rems causes some detectable changes in
blood, doses to near 100 rem usually have no immediate
harmful effects. Doses above 100 rems cause the first signs of
radiation sickness including.
1 nausea
2vomiying
3headache
4some loss of white blood cell
Doses of 300 rems or more cause temporary hair loss, but
more significant internal harm.
dose of 800 rems or more are always fatal.

4. Hiroshima and Nagasaki
Many people at Hiroshima and Nagasaki died not directly from
the actual explosion,but from the radiation released as a result
of the explosion. the doctors who is in Hiroshima and Nagasaki
Didn't know the causes and how to cure radioactive patient .

5. Chernobyl
the Chernobyl nuclear accident is summarized as a
mismanaged electrical engineering experiment which resulted
in the reactor exploding. the explosion was chemical, driven by
gases and steam generated by the core runaway,not by
nuclear reactions.

6. The Mile Island
nuclear worker head big noises coming from nuclear plants.
some 220 gallons of water per minute began flowing out of the
reactor vessel . Within five minutes after the main feed water
system failed,the rector, deprived of all normal and emergency
sources of cooling water, and no longer able to use its
enormous energy to generate electricity.
the loss of coolant at the reactor continued for some 16 hours.
Abort a third of the core melted down.

7. Medical Treatment
there is currently no effective medical treatment available for
potentially fatal radiation doses.Medical science has no way of
telling the difference between people who have received fatal
doses and will die despite all effects and can be saved includes
blood transfusion and bone marrow transplants.

8. Summary
Radiation effects on humans of great account. And the medical
curing don't find. so we should prevent radiation accidents.