ADMIN ADUMBRATION: I'll use David as an exemplar. This is a genuinely pseudo-random [tm] sample chosen because it is typical of a large percentage of posts. This has NOTHING to do with what he said or the topic or ... So, sorry David, you just happened to provide a good example. so EVERYONE* - please trim off prior material at least a little intelligently= .. Highly intelligently is even better :-). This example had one (nicely done) line of comment and just on 100 lines of prior material, and this is by no means an extreme example. The core of the relevant material being commented on occupied 4 lines. I knew instantly what David's witty response referred to as I'd noted the claim or typo (I don't know which it was) that he was referring to and wondered what it meant, so I "got it" instantly. I suspect that many others may have missed the point of the one liner and, if so, David's wit could have had a far wider appreciative,or not, audience. In the case of more technical badinage, a tightly trimmed thread allows quick reading through pertinent material as people develop arguments and address points raised. PLEASE trim off irrelevant old material. Russell * EXCEPT 'you know who you are' - please untrim just a tiny sliver of prior material so we may know to what you are referring to. Useful and/or funny points are quite often lost on many (including me) I think when the connection to prior material is uncertain or unknown. _____________ PRIOR MATERIAL ALL RETAINED AS OF RELEVANCE TO POINT BEING MADE. On 6 August 2014 06:03, David C Brown wrote: > You can detect gravitational waves using just your body? WOW > > > On 5 August 2014 15:30, Yigit Turgut wrote: > > > Bottom line is ; he is indirectly measuring the moment applied to the > > device by his hands (: > > > > Crystal inside is a piezoelectric crystal and when stress is applied > across > > boundries of the structure there is a potential fluctuation across the > > vertical axis or vice versa. What is being 'displayed' is a the > > differential change in the clock of the frequency meter actually. > > > > There is no such concept as 'gravity field' as the video states and bun= ch > > of other crap mentioned. There are gravitational waves and you need > > something like a LIGO to measure that. It's 'possible' to see them in a > lab > > on Earth as well but this requires very special hardware, for example m= e. > > > > > > On Tue, Aug 5, 2014 at 11:21 AM, wrote: > > > > > > > > Just an FYI, if you're measuring "weight", that certainly does have > > > something to do with gravity. > > > What we call weight is the reaction our mass has in relation to > > > gravity. For instance, if one > > > weighed say 100 pounds on earth, that same person would only weigh > > > about 11 pounds on the moon > > > because the moons gravity is about 1/9th that of the earth. > > > > > > Regards, > > > > > > Jim > > > > > > > -------- Original Message -------- > > > > Subject: Re: [EE] Dave on Gravity > > > > From: Peter > > > > Date: Tue, August 05, 2014 7:25 am > > > > To: piclist@mit.edu > > > > > > > > > > > > Sergey Dryga dryga.us> writes: > > > > > Without knowing the details of the crystal configuration, the > effect > > > seems > > > > > feasible enough. > > > > > > > > Gravity vector *orientation* caused crystal frequency changes are > well > > > > documented by makers. Technically one is weighing the crystal in > > various > > > > configurations and not measuring "gravity" at all. I think that mr > > > eevblog > > > > should have mentioned the need to use at least a Rubidium clock as > > > counter > > > > reference when doing what he did. He must have started some new > > movement > > > > among the masses with that blog (which I did not watch). All clocks > and > > > > watches also undergo the 2g "tipover" test for certification, among > > other > > > > things. Also some of the effects CAN be seen on decent equipment. > > Here's > > > a > > > > writeup by Brooke Clarke who used to be on this list too: > > > > > > > > http://www.pacificsites.com/~brooke/I/timefreq.shtml > > > > > > > > (search for 'gravity' in that) > > > > > > > > -- Peter > > > > > > > > -- > > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > > View/change your membership options at > > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > -- > > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > > View/change your membership options at > > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > -- > > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > > View/change your membership options at > > http://mailman.mit.edu/mailman/listinfo/piclist > > > > > > -- > __________________________________________ > David C Brown > 43 Bings Road > Whaley Bridge > High Peak Phone: 01663 733236 > Derbyshire eMail: dcb.home@gmail.com > SK23 7ND web: www.bings-knowle.co.uk/dcb > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .