At conservapedia's article on the
Global Positioning System, one can read:
These receivers rely on precisely timing signals sent from GPS satellites, with corrections for atmospheric attenuation and relativistic effects.
GPS seems to be a useful device!
FrankC aka ComedyFan 10:53, 6 January 2010 (EST)
Great catch of a misleading statement, Frank! I've corrected it. Our
theory of relativity entry explains how it did not aid the development of
GPS. The repeated attempt by relativists to falsely claim credit for
GPS reinforces the lack of any legitimate contributions.--
Andy Schlafly 11:29, 6 January 2010 (EST) Well, you are consistent! Just another question: What's about
particle accelerators? Generally, the theory of relativity is used to explain why it takes more energy to accelerate an electron from 200,000,000 m/sec to 200,002,000 m/sec than from 2,000 m/sec to 4,000 m/sec. Have you thought about an explanation for this phenomenon? Accelerators have applications beyond basic research!
FrankC aka ComedyFan 12:02, 6 January 2010 (EST) Frank, I have an open mind about this, but I'm not aware of a single benefit from what you describe, nor do you identify one. Do you have an open mind about this?--
Andy Schlafly 14:44, 6 January 2010 (EST)
- Synchrotron radiation is used in medicine
- So, may I ask again: what your explanation for the phenomenon? I suppose you are aware of the phenomenon I described above?
FrankC aka ComedyFan 15:47, 6 January 2010 (EST) Frank, inventors and doctors and engineers don't typically even bother learning relativity. Should I repeat that? Complain to engineering departments and medical schools if you think that should change. Nothing useful has even been designed or built using relativity. If you want to look and look and look for a counterexample then you'll be wasting your time. I'm not going to waste mine. This is my final reply on this topic for now. Do something logical, such as editing the Bible, and after benefiting from that experience we can revisit this issue in a month or so.--
Andy Schlafly 15:52, 6 January 2010 (EST) Why does it matter whether the users of the invention learn relativity? Most users of microwaves never learn Maxwell's equations either. That doesn't mean that the laws are irrelevant to the gadget's operation. Likewise, the engineers who correct the clocks of GPS satellites may not know or care that relativistic effects are behind the clock skew. But that dodges the point that relativistic effects are real, observable, and must be corrected for in several useful inventions.--
NgSmith Here's a good source:
| US Navy. As for engineers not bothering to learn relativity, I think that's a mite off the mark. I'm an engineer and I had to take a class dealing with the basics of SR, and I'm just an electrical engineer. Aerospace engineers certainly deal with relativity a great deal, as do nuclear engineers.
anieleGiusto" target="_blank">DanieleGiusto 00:26, 7 April 2010 (EDT) Bah... My engineering professor worked at a synchrotron at Brookhaven National Laboratory. He was in charge of a beam line for the Naval Research Laboratory. They are actually very interesting devices in that they really help with all fields of science and even fields outside of it. My one friend conducted some research with a synchrotron when doing research with fuel cells. My engineering professor studied magnetic materials with a synchrotron. Every once in a while you also find stories like this
http://news.discovery.com/human/brain-human-ancestor-skull.html which actually wouldn't have been possible without the synchrotron. I'm only just scratching the surface of how useful they are. Would you like some more information?
AdamYak 14:35, 10 August 2010 (EDT) Yes, I would like more support for your claim. Relativity is not even part of most engineering curricula.--
Andy Schlafly 09:17, 11 August 2010 (EDT) Are not the atomic bomb and nuclear power examples of inventions based on the equivalence of matter and energy? MLS 9 Aug 10
GPS revisited
The same Tom von Flandern who is quoted in the article on the
theory of relativity saying that the GPS programmers "have basically blown off Einstein", wrote in an article in 1998:
So we can state that the clock rate effect predicted by GR is confirmed to within no worse than