In the following lesson you will find an article which has answers to these questions. 
After you have read it and done all exercises, come back and challenge yourself with the questions.

Only you know if you can answer them. If you are doing this course under supervision you may expect your teacher to ask you some of the questions.
Find the answers while reading the article in the lesson that follows.

  • Models are particularly useful in relativity and quantum mechanics, where conditions are outside those normally encountered by humans. What is a model?

  • How does a model differ from a theory?

  • If two different theories describe experimental observations equally well, can one be said to be more valid than the other (assuming both use accepted rules of logic)?

  • What determines the validity of a theory?

  • Certain criteria must be satisfied if a measurement or observation is to be believed. Will the criteria necessarily be as strict for an expected result as for an unexpected result?

  • Can the validity of a model be limited, or must it be universally valid? How does this compare to the required validity of a theory or a law?

  • Classical physics is a good approximation to modern physics under certain circumstances. What are they?

  • When is it necessary to use relativistic quantum mechanics?

  • Can classical physics be used to accurately describe a satellite moving at a speed of 7500 m/s? Explain why or why not.


Source: https://opentextbc.ca/physicstestbook2/chapter/physics-an-introduction/
Date: 17.04.2020 License: CC BY


Last modified: Wednesday, 4 November 2020, 5:56 PM