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Yep, and there is an interesting story to go with that:
Physicists and Engineers worked on the GPS project, but came to a disagreement. The Engineers saw more than one gravitational time dilation effect and the Physicists said it was one and the same effect seen in two different ways and so should not be doubled; each refused to launch with the others claim.
The clever management solution was to have a switch in the software so it could be run either way, and they launched.
Turned out the Physicists had mastered their art, but I have sympathy for the Engineers; I happen to be both a Physicist and Engineer so really like this story which I seem to recall reading in the book Exploring Black Holes: Introduction to General Relativity by Taylor and Wheeler. The second edition is free (Exploring Black Holes: Introduction to General Relativity, Second Edition : John Archibald Wheeler, Edwin F. Taylor, Edmund Bertschinger : Free Download, Borrow, and Streaming : Internet Archive), and I see the story is still there (Chapter 4, section 10)
This is not a pirated copy as the authors chose to give it away free.
Physicists and Engineers worked on the GPS project, but came to a disagreement. The Engineers saw more than one gravitational time dilation effect and the Physicists said it was one and the same effect seen in two different ways and so should not be doubled; each refused to launch with the others claim.
The clever management solution was to have a switch in the software so it could be run either way, and they launched.
Turned out the Physicists had mastered their art, but I have sympathy for the Engineers; I happen to be both a Physicist and Engineer so really like this story which I seem to recall reading in the book Exploring Black Holes: Introduction to General Relativity by Taylor and Wheeler. The second edition is free (Exploring Black Holes: Introduction to General Relativity, Second Edition : John Archibald Wheeler, Edwin F. Taylor, Edmund Bertschinger : Free Download, Borrow, and Streaming : Internet Archive), and I see the story is still there (Chapter 4, section 10)
This is not a pirated copy as the authors chose to give it away free.
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