SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Politics : Politics for Pros- moderated -- Ignore unavailable to you. Want to Upgrade?

To: ManyMoose who wrote (373273)7/16/2010 6:54:13 PM
From: longnshort  Respond to of 793917
 
that's what I read. But what do I know



To: ManyMoose who wrote (373273)7/16/2010 7:20:55 PM
From: goldworldnet  Read Replies (4) | Respond to of 793917
 
What is the orbital altitude of GPS satellites?

Regular GPS satellites orbit at an altitude of 10,988 nautical miles (12,645 statute miles).

how-gps-works.com

Underwater GPS

GPS does not work underwater-the radio signals on which it depends cannot pass through water. So submariners have yet to benefit from the revolution in navigation that it allows.

newscientist.com

* * *



To: ManyMoose who wrote (373273)7/16/2010 11:04:33 PM
From: alanrs  Read Replies (1) | Respond to of 793917
 
I read a technical description of how it's done, don't recall where. It's fairly sophisticated having to do with identifying the electrical field (?) in the original well. I believe the bit has to be removed for the sensing instruments to be deployed or work, and then drilling resumes with whatever adjustments. It's not GPS.

ARS


HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News