Formation Definition and 509 Threads

In the experiment that I did today, there's a very strange step. After mixing two solutions in a beaker, according to the lab manual, we needed to scratch the bottom of the beaker using a spectula so as to help forming ppt. My question is why does scratching the beaker help forming ppt?

I wrote this short article for my grandson concerning the formation of clouds at an atomic level. I would be interested in constructive criticism before I put it away until he gets older. If anyone is aware of websites or other sources of information concerning this subject, I would be...

"Wisconsin crop circle formation was not made by hoaxers." "A Crop Circle, an eyewitness, photos, recorded anomalies and a meeting with a member of "The USAF Special Crop Circle Investigative Unit"! On July 23-24, 2003, a private scientific research team documented physical evidence that...

"Mysterious lights were videotaped emerging from the thirty-seven circles discovered in young wheat below the Ridgeway at Ogbourne St. George, Wiltshire, England, on Sunday, June 15, in a pattern nearly 600 feet in diameter." http://www.earthfiles.com/news/news.cfm?ID=551&category=Environment

My question pertains to atmosphere. Forgive me if it sounds stupid, or obvious, but I just don't know how atmospheres come about. I understand how planetoids and planets are formed, but when/how does it get an atmosphere? Any help would be appreciated.

Greetings ! Some less popular theories, at this time, suggest that planets formed or at least began to form before the Sun had formed. I'm not sure that I agree with that, but it's worth remembering as another counter example to the idea I just thought about. Anyway, the idea I just...

Hi, I'm an amateur cosmologist/physicist and I was hoping that someone more well-versed in these areas may be able to comment on this idea that I have. Assuming space-time is quanitized and the universe is limited to 3 spatial dimensions (as in Loop Quantum Gravity), has any research been...

hi,was the formation of our galaxy inevitable after the BB or could there have been a different outcome, if the former is true then that implies that information or rules were stored pre BB, if the later is true what other outcome could arise. wolram.

If some of the people that frequent this area of PF could please post their findings and or opinions on this debate I would appreciate the input very much. Did the planets of our solar system form uniformly; basically at the same time, out of the same solar material? Or, did some form sooner...