Richard, What do you mean by "change through the noise=94? To me the experiment was = very repeatable and consistent. I do not know if the change was due to grav= ity, but before I criticize Dave, I would have to bring some serious data t= o show that he is wrong, Yigit Turgut just blasted at Dave without any proof of anything. What are Y= igit's credentials to make that obviously derogatory comment. I have been a degreed engineer for over 42 years, and I do not reject Dave= =92s point as insane. Crystal resonance can be affected by many things, and= most likely gravity has a part to play. What he was showing was a deviatio= n of about 2 or 3 mHz on a 10 MHz frequency. That=92s about 2.5 x 10 to the= 10th power. Changing the angle of the crystal relative to the gravity vector might be t= he reason of the change. My $0.02, Jean-Paul AC9GH On Aug 1, 2014, at 9:13 AM, Richard R. Pope wrote: > Allen, > I agree. I'm wondering if the average frequency meter is sensitive=20 > enough to detect the change through the noise. I don't know, maybe,=20 > maybe not. I might try to replicate his findings. > Thanks, > rich! >=20 > On 8/1/2014 8:04 AM, Allen Mulvey wrote: >> It has become extremely obvious to me lately, as I have been working on = the >> doors of my house, that gravity bends and warps things. It would seem th= at a >> quartz crystal is no different. Stress is applied, no matter how slight.= I >> would expect such stress to influence the resonance of the crystal. I.e. >> Change the stress =3D change the resonance. >>=20 >> Allen >>=20 >>> -----Original Message----- >>> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behal= f >>=20 >=20 > --=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 --=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 .