A Quote by Emilio G. Segre
In an enterprise such as the building of the atomic bomb the difference between ideas, hopes, suggestions and theoretical calculations, and solid numbers based on measurement, is paramount. All the committees, the politicking and the plans would have come to naught if a few unpredictable nuclear cross sections had been different from what they are by a factor of two.
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Because of recent improvements in the accuracy of theoretical predictions based on large scale ab initio quantum mechanical calculations, meaningful comparisons between theoretical and experimental findings have become possible.
The time has come for those nations that rely on the force of nuclear armaments to respectfully heed the voices of peace-loving people, not least the atomic bomb survivors, to strive in good faith for nuclear disarmament and non-proliferation, and to advance towards the complete abolishment of all such weapons.
The scientists who made the atomic bomb are, in my sense, people with a tragic destiny. You know, there was the US race with Nazi Germany and good evidence that the Germans were more advanced in nuclear physics, and we had to get the bomb first. But then there was the use of that dreadful weapon, or instrument of genocide, and many of the more sensitive scientists turned quickly into anti - nuclear people - and very effective ones.
It is notorious that the same discovery is frequently made simultaneously and quite independently, by different persons. Thus, to speak of only a few cases in late years, the discoveries of photography, of electric telegraphy, and of the planet Neptune through theoretical calculations, have all their rival claimants. It would seem, that discoveries are usually made when the time is ripe for them - that is to say, when the ideas from which they naturally flow are fermenting in the minds of many men.
Native annalists may look sadly back from the future on that period when we had the atomic bomb and the Russians didn't. Or when the Russians had aquired (through connivance and treachery of Westerns with warped minds) the atomic bomb - and yet still didn't have any stockpile of the weapons. That was the era when we might have destroyed Russia completely and not even skinned our elbows doing it.
There has been a transition from a nuclear-annihilation scenario to an isolated-terrorist-nuclear-bomb scenario. But we're still locked into a mind-set that nuclear war would be so overwhelming that any kind of preparedness would be futile.
We do not need an atomic bomb. The Iranian nation is wise. It won't build two atomic bombs while you have 20,000 warheads.
If some nuclear properties of the heavy elements had been a little different from what they turned out to be, it might have been impossible to build a bomb.
Businesses should encourage all their staff to come up with ideas, not be afraid to make suggestions, and then to act on those suggestions. There is nothing worse than going to a job every day were you feel like you are not making a difference to either the place you work or the world you live in.
A bomb is a bomb, what's the difference between different kinds of bombs? All bombs are to kill, but it's about how to use it.
Before the first atomic bomb test, scientists took the time to calculate whether the blast would ignite the nitrogen in Earth's atmosphere and incinerate us all. The risk was low and the test went off, but Rees wonders what the odds would have had to be to discourage the bomb makers.
Active-shooter scenarios have become part of the education lexicon. I had fire drills. My parents had duck and cover - nuclear and atomic bomb drills. Kids today grow up with this idea that this could happen at any point in time.
The atomic bomb made the prospect of future war unendurable. It has led us up those last few steps to the mountain pass; and beyond there is a different country.
Had I known that the Germans would not succeed in producing an atomic bomb, I would not have lifted a finger.
In discussing the state of the atmosphere following a nuclear exchange, we point especially to the effects of the many fires that would be ignited by the thousands of nuclear explosions in cities, forests, agricultural fields, and oil and gas fields. As a result of these fires, the loading of the atmosphere with strongly light absorbing particles in the submicron size range (1 micron = 10-6 m) would increase so much that at noon solar radiation at the ground would be reduced by at least a factor of two and possibly a factor of greater than one hundred.
Ideas must be put to the test. That's why we make things; otherwise they would be no more than ideas. There is often a huge difference between an idea and its realization. I've had what I thought were great ideas that just didn't work.
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