08 Mar 20
@metal-brain saidSo why do they do it?
You don't need to know the time difference before launch
because all you need to do is reset the receiver clock to the atomic clocks after they are in orbit.
So why do they do it before launch?
@metal-brain saidIn other words, you refuse to explain why and regress to stupidity.
Because they can.
Let us help you there; They do it because it is necessary for GPS before launch, exactly like we and science have been saying all the long.
Strange if it was necessary for GPS if all those relativity time dilation equations were wrong! That would be a mystery.
@humy said"exactly like we and science have been saying all the long."
In other words, you refuse to explain why and regress to stupidity.
Let us help you there; They do it because it is necessary for GPS before launch, exactly like we and science have been saying all the long.
Strange if it was necessary for GPS if all those relativity time dilation equations were wrong! That would be a mystery.
Science doesn't say anything. There is no person named science that said something. Furthermore, you do not represent science and you only speak for yourself, not science or other people. You are not a "we". You are one person who believes in countless myths that are untrue.
Why is it necessary? You cannot explain that.
You know fully well that GPS receiver's clocks are periodically reset to become synchronized to the atomic clocks in the satellites. That is all that is needed.
There is no need to adjust for time difference before launch. The receiver clock can be reset at any time. If you dispute this give me a reason for it. Why would it matter?
@metal-brain saidWow you must be really getting desperate to now resort to stupidly arguing over trivial semantics. "what the science says" means "what the facts of science imply" and only a complete moron would fail to understand the intended meaning.
"exactly like we and science have been saying all the long."
Science doesn't say anything. There is no person named science that said something.
The rest of your post is your some old moronic straw man BS.
@metal-brain saidrelativity theory is correct.
Why is it necessary?
Thus without such GPS pre-launch adjustments GPS would quickly fail.
If all that wasn't true they wouldn't do any such pre-launch adjustments.
See links provided for source of information.
@humy saidA flawed article written by an ignoramus is not proof. It certainly is not science to cherry pick an article using confirmation bias.
Wow you must be really getting desperate to now resort to stupidly arguing over trivial semantics. "what the science says" means "what the facts of science imply" and only a complete moron would fail to understand the intended meaning.
The rest of your post is your some old moronic straw man BS.
Since you have so much faith that GR and SR equations are used show me you can use them. At 3200km in orbit what is the time difference between the satellites and the receiver on earth's surface?
09 Mar 20
@humy saidYou know fully well that GPS receiver's clocks are periodically reset to become synchronized to the atomic clocks in the satellites. That is all that is needed.
relativity theory is correct.
Thus without such GPS pre-launch adjustments GPS would quickly fail.
If all that wasn't true they wouldn't do any such pre-launch adjustments.
See links provided for source of information.
There is no need to adjust for time difference before launch. The receiver clock can be reset at any time. If you dispute this give me a reason for it. Why would it matter?
"Thus without such GPS pre-launch adjustments GPS would quickly fail."
They would not fail at all. You have given no logical explanation for that. You just keep mindlessly repeating it like a parrot.
@metal-brain saidwiki science links are edited by scientists and science experts that know a LOT more about it than you or I and thus they are a far more reliable source of scientific knowledge than you would ever be. That is why both I and we, as in all of us here excluding yourself, always trust their word over your ignorant word on any science topic including GPS and relativity.
A flawed article written by an ignoramus is not proof.
Hypocritical name calling those scientists and science expert editors "ignoramus" by ignorant you just because they happen to say something that contradicts you stupid ignorant claims is not a sign they are wrong but merely a sign of your total stupidity and that it is always you, not they, who are wrong.
There are other science websites other than wiki ones that also explain the need for relativity time dilation to be taken into account in GPS.
Just a few examples from my quick 1 minute google search include;
http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.html
https://gssc.esa.int/navipedia/index.php/Relativistic_Clock_Correction
"...The rate of advance of two identical clocks, placed one in the satellite and the other on the terrestrial surface, will differ due to the difference of the gravitational potential (general relativity) and to the relative speed between them (special relativity)...."
http://www.physics.org/article-questions.asp?id=77
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5253894/
"...without carefully accounting for numerous relativistic effects, the system would not work. ..."
... etc. and obviously I would find more of them with a longer search.
Thus they all say basically the same kind of things and using different wording from wiki and from different editors from wiki and various wording with the same basic meaning expressed.
So, you are claiming an absurdity like flat Earth by implying all those experts and science links are ignorant and lying. What for? Just to spite you? You aren't that important; not even close. Your delusional ignorant words about science are always either refuted or ignored by all scientists that have the displeasure of reading you ranting and raving, including all scientists here.
11 Mar 20
@humy saidI don't doubt your ability to find multiple sources of the same popular myth. You still have not answered my questions.
wiki science links are edited by scientists and science experts that know a LOT more about it than you or I and thus they are a far more reliable source of scientific knowledge than you would ever be. That is why both I and we, as in all of us here excluding yourself, always trust their word over your ignorant word on any science topic including GPS and relativity.
Hypocritical ...[text shortened]... ientists that have the displeasure of reading you ranting and raving, including all scientists here.
11 Mar 20
@metal-brain saidWhat you call "popular myth" is called by all non-morons including all of us here as "known undisputed scientific facts" or words of that effect.
I don't doubt your ability to find multiple sources of the same popular myth.
You still have not answered my questions.What questions? Which ones?
@humy saidSince you have so much faith that GR and SR equations are used show me you can use them. At 3200km in orbit what is the time difference between the satellites and the receiver on earth's surface?
What you call "popular myth" is called by all non-morons including all of us here as "known undisputed scientific facts" or words of that effect.
You still have not answered my questions.What questions? Which ones?
There is no need to adjust for time difference before launch. The receiver clock can be reset at any time. If you dispute this give me a reason for it. Why would it matter?
13 Mar 20
5 edits
@metal-brain saidNo faith required. Just established and generally undisputed science which is the same science that says the Earth is round and not flat.
Since you have so much faith that GR and SR equations
At 3200km in orbit what is the time difference between the satellites and the receiver on earth's surface?What possible relevance does the exact figure have to anything we were talking about? Even if you wanted to know, which I know you don't, I won't baby sit you and calculate it for you. Just look up the equations herehttps://en.wikipedia.org/wiki/Gravitational_time_dilation and calculate it yourself if you want to know (which you don't).
The receiver clock can be reset at any time. If you dispute this...which I OBVIOUSLY don't and OBVIOUSLY never have done and you OBVIOUSLY knew this all the long and are just making up new stupid straw mans that convinces nobody here but rather just shows us all you are a complete moron. So your next extremely stupid staw man question doesn't apply.
So is that ALL your completely stupid pathetic irrelevant straw man "questions" you say you want me to answer? Is that it? You make no point and convince nobody here of anything other than you are a complete moron.
@Metal-Brain
Re you daft or just obstructionist? You think they actually launched the sats without even BOTHERING to consult SR or GR equations? If that were the case, show me the paper saying they knew in advance they would not have to worry about such nonsense.