Centrifuges are one method of enriching Uranium. Depending on how much you enrich it the Uranium can be usable as either reactor fuel or nuclear weapon explosive.
Other methods of enrichment include:
The Bikini atoll was used for nuclear weapons testing.
It can produce low grade plutonium that need be extracted from the used nuclear fuel through used fuel reprocessing. However, power reactors are subject to the international nuclear safeguards to prevent its misuse.
This is best explained in Glasstones's book The Effects of Nuclear Weapons.
If they are used, then very detrimentally.
the only time they were ever used was to end ww2.
if one of the public make nuclear weapons of course they can use but it can then become illegal if they harm someone
No nuclear weapons were used in the korean war
The radioactive elements plutonium or uranium are the elements that are used in nuclear weapons that create nuclear fission. Isotopes of hydrogen are used in nuclear weapons that create nuclear fusion.
Centrifuges are used for enriching ura nium in the U-235 isotope. They work with gaseous uranium hexafluoride, if you have a long line of hundreds of centrifuges and pass the gas through them, you can gradually spin off some of the heavier U-238 resulting in a main stream with a greater percentage of U-235. This method has been used in Europe for many years and uses much less power than the older gaseous diffusion method which has been continued in the US, but I think that is now changing to centrifuges. This is what the State Dept is so concerned about happening in Iran. If you have enough centrifuges you can get nearly pure U-235 out which of course can be used in weapons.
None. No nuclear weapons were used in Viet Nam.
The Bikini atoll was used for nuclear weapons testing.
The UN tried to limit nuclear weapons in many ways. For example, the UN simply wanted all nations to disarm itself with all WMD (Weapons of Mass Destruction), this includes Nuclear Weapons. Also when certain countries like Iran and Korea starts a nuclear program, the UN tries to make sure that none of it is used to make Nuclear Weapons.
Some of the countries have nuclear weapons because they use them as a defense mechanism. The nuclear weapons are intended to be used whenever there is a war.
the u.s. used non nuclear weapons and nuclear weapons against japan
the government. The government used Archibald Jameson's discovery of cold welding to make nuclear weapons for the us government
No nuclear weapons have been used in Afghanistan to date.
The threat that nuclear weapons would be used.