artifact Definition and 14 Threads

How did you find PF?: Goggle search We recently found this stone object on our property here in NWA, and we were wondering if there was someone in PF that could assist us in identifying if this might be an indigenous stone tool. From a layman’s perspective it seems to be intentionally shaped...

By analyzing 91,742 reported extra-galactic distances and their one sigma uncertainties for 14,560 galaxies, it was found that pairs of reported extra-galactic distances of the same galaxy differ from each other by 2.07 the reported uncertainties on average. In my opinion, this indicates that...

he so-called [herringbone or spike MRI artifact][1] on a given example could be traced to a specific point(s) in Fourier space ("k-space"). The idea is that during the acquisition of the image, a certain RF wave emitted by the patient (providing the info about diseased or normal anatomy) had...

A delightful video here A lecturer derives special relativity in a world of bats and echo location using a bat (sound) clock. All communication is limited by the speed of sound. (so a parallel of our world and light speed communication) He ends up observing that in no cases for any observer...

I've read a lot about QM and studied the math and how it work many and many times in several lectures in several places, but whenever I review what the theory says and compare it to how the measurement work, I come to doubt in the theory it self, I think it can even be explained using classical...

Nice to hear your comments...

Fisherman nets 4,000-year-old pagan figurine http://www.grindtv.com/outdoor/outposts/post/fisherman-nets-4000-year-old-pagan-figurine/ Nikolay Tarasov pulls Bronze Age artifact, carved in bone and said to be worth more than its weight in gold, from Siberian river near the community of...

Hi everyone, Recently i went to visited my grandfather and he brought me to his room where he pulled out an old artifact that he got from his father that got it from his father. He says it is from Egypt. it like a circle container and has a symbol on it. The symbol really intrigued me so...

Hello, I can't seem to find a comprehensive explanation for this recurring phenomenon on my XRF spectra graphs. It's a high intensity peak that occurs seemingly below the 0 keV energy mark. And it seem to be common to many graphs, yet nowhere seems to say what it actually is, aside from a...

http://img76.imageshack.us/img76/2711/virgocluster.jpg Look at this image of the Virgo cluster of galaxies, for images of galaxies extending as far as the eye can see, some appear to exist in a swarm around the sub cluster at the core, others are in streamers and wisps of galaxies extending...

Could GR's "background independence" be a theoretical artifact? ==quote from Rovelli "Unfinished Revolution" (2006) page 2== ...Others, on the other hand, and in particular some hard–core particle physicists, do not accept the lesson of GR. They read GR as a field theory that can be...

Humans are artifact adoring artisans Humans are meme (idea) adoring creators. Humans create symbols (abstract ideas) upon which they place value sufficient for killing and dying. Americans create a flag (an artifact of cloth) which symbolizes the value they place in a nation...

Here's one for the conspiracy theorists:

http://www.mosnews.com/news/2004/08/10/tunguska.shtml According to the Moscow News, the first ever debris of the object that exploded over Tunguska, Russia in 1908 has been recovered. The article says that a large black, metallic box has been found and has been sent to a lab for analysis...