TED Talk – How GPS satellites keep exact time …

TED Talk – how GPS satellites keep exact time …

Interesting and potentially useful resource for those of you in spatial educational endeavours …
http://youtu.be/70cDSUI4XKE

————————-

Aside – the throw away line about Einstein’s Theory of Relativity? If you were not aware, HERE is a lovely example of how what is seen by most as ‘esoteric science’ is actually used in a pragmatic way by pretty much all of us every day with our GPSes in survey equipment, smart phones, etc.  —  “if left uncompensated, it would cause navigational errors that accumulate faster than 10 km per day!” –> http://physicscentral.com/explore/writers/will.cfm

Regards,
Greg Cocks
Geologist | Scientific Data, GIS & Business Analyst | Environmental Scientist | Technical Manager
Eldorado Springs, CO
gregcocks.kiwi@gmail.com
303-828-7576 mobile
LinkedIn 

(Jan. 29)