Category: Science - Physics

Our Nuclear Future: Facts, Dangers and Opportunities

Our world is changing, and the change is becoming more rapid. The moving force behind this change is scientific discovery. All of us are deeply affected by the consequences of science. At the same time, very few understand the highly technical foundations of our civilization....

Chapters

1. CHAPTER I

Our world is changing, and the change is becoming more rapid. The moving force behind this change is scientific discovery. All of us are deeply affected by the consequences of s...

2. CHAPTER II

All matter is composed of atoms, which are very tiny objects. We cannot see them because waves of light wash over them like ocean waves over a pebble. An atom is about as big in...

3. CHAPTER III

Up to now we have regarded atoms as being divisible into electrons and nuclei. Electrons and nuclei, however, we have regarded as indivisible entities. This point of view is per...

4. CHAPTER IV

One might imagine that a radioactive nucleus would begin to “age” from the moment of its birth, and that after the passage of a predetermined time, the disintegration process wo...

5. CHAPTER V

The positive electric charges within an atomic nucleus repel one another. In the most heavily charged nuclei this repulsion becomes so great that the nucleus can break into two...

6. CHAPTER VI

The alchemists tried to transform one element into another artificially. They used heat, they used chemicals; they even used witchcraft. They failed. Their simplest method—to he...

7. CHAPTER VII

Neutrons are ideal projectiles for nuclear bombardment because they carry no charge, can approach nuclei easily, and interact with them strongly. These neutral particles, discov...

8. CHAPTER VIII

When an energetic particle moves through matter (living or nonliving), what happens is a question of chemistry. Chemistry is the subject that deals with the arrangement and rear...

9. CHAPTER IX

Because of the fallout, the test site must be isolated. The presence of human population does not improve nature (with exceptions which are quite rare and the more notable). Als...

10. CHAPTER X

In February 1954 preparations were made on Bikini Atoll for the explosion of a hydrogen bomb. March 1 was the “ready” date. It did not seem probable that the shot would actually...

11. CHAPTER XI

An example of a radioactive isotope which is produced in large quantity by the fission process and about which there is some reason to worry, but actually is not dangerous to ma...

12. CHAPTER XII

How much harm is being done by the atomic tests? Some scientists have claimed that from past tests alone about 50,000 persons throughout the world will die prematurely. There is...

13. CHAPTER XIII

Radiation may hurt the individual. It may also be harmful for our children and hurt the race. We have seen that the danger from the radiation due to testing is small compared to...

14. CHAPTER XIV

Nuclear explosions seem horrible for many reasons. They were presented to an unprepared world as a dramatic surprise—as the climax to the slaughter of the Second World War. Thei...

15. CHAPTER XV

Many people feel that tests should be discontinued. This feeling is widespread and strong. The question of tests is obviously important. It may influence our security as individ...

16. CHAPTER XVI

The weather is no longer quite as unpredictable as it used to be. Yet we are hardly ever sure of it even a few hours in advance. One week is about the limit of the period of any...

17. CHAPTER XVII

At the beginning of the scientific and industrial revolution two old ambitions were found to be impossible dreams. One was the transmutation of elements, the other the machine o...

18. CHAPTER XVIII

Nuclear reactors generate energy with the help of nuclear fission. Every time a fission occurs we are left with radioactive by-products. It is most important to prevent the unco...

19. CHAPTER XIX

The future depends on people. People are unpredictable. Therefore, the future is unpredictable. However, some general conditions of mankind depend on things like the development...