Japan has few Natural Resources. They have to generate their electricity from imported fuels, primarily fossil (petrochemical) fuels. The nuclear reactor is an option to the use of fossil fuels to generate heat to generate electric power, and for Japan, an island nation, it was one that came with acceptable risks.
Nuclear reactors use nuclear fission.
No, Hawaii is currently not in danger of radiation from the incidents involving the nuclear reactors in Japan.
We use nuclear fission in nuclear reactors to tap nuclear energy.
In nuclear fission reactors
Before the Fukushima Daiichi Disaster, there were 54 operational nuclear reactors in Japan. Three of those melted down, and one had problems that rendered it inoperable. The government has decided the other two reactors at Fukushima Daiichi cannot be restarted. Also, as other reactors have been shut down for maintenance or refueling, they have not been restarted, with the result that now, in early December 2011, only eight Japanese reactors remain in operation.
The use of nuclear energy
the cause of the melt down of the reactors in japan is the water that is needed to cool down the reactors
The reason for having many reactors is because you can produce more electrical energy from them. Also Japan use BWR type reactors(Boiling Water Reactor) which are not as efficent as a more commonly used PWR reactor(Pressurized Water Reactor).
Nuclear reactors use controlled nuclear fission reactions to generate heat, which is then used to produce steam that drives turbines to generate electricity. The heat is produced in the reactor core where nuclear fuel rods containing uranium or plutonium undergo fission reactions. The reactor's cooling system helps regulate the temperature and prevent overheating.
To produce electricity
They all use nuclear fission
Minecraft doesn't have nuclear reactors.