New Product Idea
in [Design]
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From: AM on 2 Jul 2010 20:21 On Fri, 02 Jul 2010 23:14:15 GMT, Jan Panteltje <pNaonStpealmtje(a)yahoo.com> wrote: >You probably do not know calculus, or maybe you look or expect liberation >by finding 'aliens', liberation is not in 'aliens', it is in yourself. Not a soul anywhere ever said that if we ever did find or 'hear' a signal, that we would ever have any chance of contacting the radiator of said signal. Nobody ever said anything about any such signal liberating anyone either. You are nearly as bad as Dingdong from BC.
From: Tim Williams on 2 Jul 2010 20:27 "John Larkin" <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote in message news:bnhs265t5v2mdskoshu8c0at12hkhpb0c8(a)4ax.com... > Thousands of home seisometers, scattered all over the place, > interfaced to computers and the internet, would be interesting, sort > of like Seti at Home. With enough data, and enough computing, it might > be possible to 3D image the earth's internal structures, layer > characteristics, stuff like that. > > Maybe the computing part could be parceled back out to those same > computers. Nasty math problems. Yeah, but the SNR is atrocious. Road noise, footsteps, air conditioning? Even with a large array of sensors (say you get one in every house on the block), there's only so much signal to be found. The noise is most likely uncorrelated (though varying throughout the day), so it could be averaged out, but 1/sqrt(N) is a slow process. Given enough processing power of course, you could still get some interesting correlations. Quakes are big slow waves, so you won't see much change over a city block. Or the "noise" itself may be of keen interest to intelligence types. What better way to track everyone's position than an invisible fleet of passive seismometers? > I wonder if a fault diffracts sound waves. It certainly makes them, > now and then. Sometimes they have "negative resistance", where a quake triggers a fault line. Something like a Marx generator, made of rock instead of electrons. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: m II on 2 Jul 2010 20:50 AM wrote: >> than > ^^^^^ > thank ^^^^^ prick mike
From: m II on 2 Jul 2010 21:01 AnalModulation wrote: > You ARE AN IDIOT! =================================================== But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, �You fool!� will be liable to the hell of fire. Matthew 5:22 =================================================== > Essentially, mindsets like yours, and very likely everything about you, > is what is useless. I see you, on the left, four rows back. http://www.photosforsouls.com/hells-fire-duncanlong181.jpg father mike
From: Paul Hovnanian P.E. on 2 Jul 2010 21:42
Rich Grise on Google groups wrote: > > I was reading today about the recent earthquakes in and near so. Cal, > and they > were talking about how difficult it is to analyze faults and stuff - > they were wondering > how the quakes had affected nearby faults. Is it really that difficult? Its not like the SETI problem, with a few receivers looking for very weak signals in lots of noise. Its a question of distributing a large set of useful sensors (hard drive shock accelerometers are probably too insensitive to be of any use and we don't know their XYZ orientation at any given time) and networking them. Once they are in place, the analysis isn't that difficult. Answer this question: Why is it that whenever we (in the USA) have an earthquake, the local news cuts to a room full of ancient pen recorders? But when they had an earthquake (and tsunami) in Indonesia, the local officials had state of the art plots of things like phase and energy vs frequency and other stuff for the event on their PCs? I'll pull on my tin foil hat and suggest a reason: Large networks of advanced sensors tied to state of the art data analysis systems are not only useful for earthquake analysis. The same sorts of data (generated by thousands of micro-quakes daily) can reveal quite a lot about geological formations. Including the locations of oil, natural gas and other resources. Making such data available to the public in this country would upset the holders of mineral rights and mining and drilling leases. So we'll be looking at ancient pen recorders for the foreseeable future. -- Paul Hovnanian mailto:Paul(a)Hovnanian.com ------------------------------------------------------------------ Steinbach's Guideline for Systems Programming Never test for an error condition you don't know how to handle. |