Interesting item............... ----- Original Message ----- From: "Jake Anderson" To: Sent: Sunday, July 27, 2003 6:41 AM Subject: Re: [OT] Gravity's Rainbow > the microwave rangefinders are just there to find the distance between the > satellites, you could use a piece of string if you wanted to. You have to be > in space for the thing to work at all. > > "The GRACE satellites measure gravitational fluctuations by flying in a > caravan formation, one after the other, and constantly tracking the distance > between them with microwave range finders. As the lead satellite passes over > an area of greater gravity, it feels and reacts to the pull before the > trailing craft. The satellites fly about 137 miles (220 kilometers) apart, > with the ranging finding system between them accurate down to a micron, or > smaller than the average red blood cell." > > in other words the trailing craft sees how the gravity affects the lead > crafts orbit > ----- Original Message ----- > From: "rad0DW" > To: > Sent: Sunday, July 27, 2003 10:48 PM > Subject: [ot]: Gravity's Rainbow > > > > > http://story.news.yahoo.com/news?tmpl=story&cid=96&ncid=96&e=1&u=/space/2003 0725/sc_space/gravitysrainbowgracemissionpushesforward > > > > Gravity's Rainbow: GRACE Mission Pushes Forward > > > > You guys might enjoy this. Can anyone explain how the microwave distance > > measurment sensors work? Do they bounce the microwaves off and measure > > the time? Or is there something else going on? > > > > Thanks > > > > So if it's just microwave emitters and detectors, is this something you > > could only do in space? Would this fry people and animals? > > > > -- > > http://www.piclist.com hint: The list server can filter out subtopics > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics