The Restless universe | |||

Introduction to The restless Universe 1 The lawful Universe 4 The intangible Universe -------------------- Other titles in the Physical World series | Answer and commentsSee Question 1.6 with its relevant text
Q1.6 In quantum mechanics, identical situations do not always produce identical outcomes. Nevertheless, a certain regularity remains because if an experimental arrangement has a variety of possible outcomes, each occurring with a definite probability, subsequent repetitions of the experiment will have the same outcomes occurring with the same probabilities. By repeating the experiment a large number of times we can check whether the probabilities predicted by quantum mechanics are valid. The most important characteristic of a scientific law is that it should be open to experimental tests. Quantum mechanics has introduced a new type of scientific law - one based on probability which embraces the fact that identical situations do not produce identical outcomes. | Relevant Links A note on powers of ten and significant figures Suggestions for further reading
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S207 The Physical World | |||