What is Time?

Time is both the dimension of change and the 'flow' of change – one word, two subtly different meanings

Introduction – what is Time?
What the dictionaries say about Time…
- …and what we can deduce from the dictionaries.
What is change (and what do Clocks actually measure)?
What is a dimension?
1. Time: the dimension
2. Time: the ‘flow’
- Duration and Persistence
So what does this mean for Time?
Time, change and relativity
Conclusion
What does ChatGPT make of this?
What Grok says
- Understanding Relativity: The Spacetime Interval Explained
Gemini’s view
- The Black Hole information paradox
- Time dilation
Question I get asked about Time and related stuff.
Appendix 1: What the dictionaries say about time
Bibliography
Contact
Author: Simon Morley

Prof Hawking also stated on page 1 of Brief History that he didn’t actually know what Time is.

So he’s perhaps not best placed to comment on Time.

What is Time? The ‘ultimate paradox’ resolved

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