Direction coupling between the various radiations generated in a nuclear reaction both with one another and with the initiating radiation can also be detected and measured by coincidences; this provides valuable information about the structure of the atomic nuclei.
President Obama has made it clear that the United States is determined to prevent Iran from acquiring nuclear weapons.
The risk of just one terrorist with just one nuclear weapon is a risk we simply cannot afford to take.
Of all the failed technologies that litter the onward march of science - steam carriages, zeppelins, armoured trains - none has been so catastrophic to prosperity as the last century's attempt to generate electricity from nuclear fission.
My parents suffered from that ideal of a perfect nuclear family. They found that a difficult pressure, I think.
I am a nuclear physicist by training and a deeply committed Christian. I don't have any doubt in my own mind about God who created the entire universe. But I don't adhere to passages that so and so was created 4,000 years before Christ, and things of that kind.
And the fact of the matter is there were thousands of people that went through those training camps in Afghanistan. We know they are seeking deadlier weapons - chemical, biological and nuclear weapons if they can get it.
It used to be you needed to have a very large sophisticated state before you could even have a nuclear weapon... Now the technology is widespread enough. It doesn't take very many people to be able to cobble together a devastating attack, and all it takes is one.
We've gotten a long way on missile defense. We know how to do it. We know how to take down incoming warheads, but we need to do a lot more work in order to be - to deploy a system that'll defend the United States against those kinds of limited strikes that might be possible by a nuclear armed North Korea or Iran.
There are two problems for our species' survival - nuclear war and environmental catastrophe - and we're hurtling towards them. Knowingly.
The nuclear arsenal that Pakistan has, I believe is secure. I think the government and the military have taken adequate steps to protect that.
The Russians and the Chinese have been absolutely clear they don't want to see Iran with a nuclear weapon.
A nuclear-weapons armed Iran is not in anyone's human-rights interests. That is a direct threat to the lives and the livelihoods and the stability not only of the region but beyond.
I grew up during the Cold War, when everything seemed very tenuous. For many years, right up until the fall of the Berlin Wall, I had vivid nightmares of nuclear apocalypse.
What the United States has to do is send a clear message to Iran that they will not be able to develop nuclear weapons. Why endure the difficulty of sanctions if they are not going to be able to develop nuclear weapons anyway?
When decisions on nuclear power stations and runways are delayed and the government dilly-dallies, people think they aren't important.
As a child, I was aware of the widely-held attitude that the ocean is so big, so resilient that we could use the sea as the ultimate place to dispose of anything we did not want, from garbage and nuclear wastes to sludge from sewage to entire ships that had reached the end of their useful life.
The revival of the Right is as extraordinary as it would be if the public had demanded dozens of new nuclear plants in the days after the Three Mile Island disaster; if we had reacted to Watergate by making Richard Nixon a national hero.
Unfortunately, the cyber threat to 'the grid' is only one means of eviscerating the soft underbelly of American society. Another which has been getting increasing attention could be delivered via the kind of nuclear-armed ballistic missile that Iran and North Korea have been developing: a strategic electro-magnetic pulse attack.
Almost every way we make electricity today, except for the emerging renewables and nuclear, puts out CO2. And so, what we're going to have to do at a global scale, is create a new system. And so, we need energy miracles.
Well, Israel, obviously, thinks of the Iranian nuclear program as an existential threat to Israel.
In early 1961 a new president, John F. Kennedy, was told by military leaders and civilian officials that the Kingdom of Laos - of no conceivable strategic importance to the U.S. - required the presence of American troops and perhaps even tactical nuclear weapons. Why? Because if Laos fell, Asia would go red from Thailand to Indonesia.
By the time I'm 50, there is probably going to be a nuclear holocaust. I should just enjoy myself.
Smiling is very important. If we are not able to smile, then the world will not have peace. It is not by going out for a demonstration against nuclear missiles that we can bring about peace. It is with our capacity of smiling, breathing, and being peace that we can make peace.
I would like nuclear fusion to become a practical power source. It would provide an inexhaustible supply of energy, without pollution or global warming.
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