Mystery Definition and 913 Threads

http://www.abc.net.au/science/news/stories/s818193.htm

Why does Carbon 12 in dead tissue ''remain'' undisturbed?

I would like to know what sigma is and what it does. What is sigma? What does it stand for? How does it work? Do you have any examples of how it works? any help would be appreciated (im not sure if this should be in the calc section or not)

So what causes this? I was at a clinic the other day, waiting on my girlfriends mom to get out, and was reading a big-muscle-guy magazine. I was looking at the performance enhancers/weight loss formulas/muscle building/etc in there (do any of these really work?), and I noticed ads like this...

gravity must be the most confounding thing to science ,we all know its effects, but no one knows its mechanics, what is the most up to date theory, theories?

Does anyone know the workings behind those little scanners that department stores use...you know, the ones that they can take off and aim at the barcodes on heavy things? I know the barcodes themselves with the thickness of the lines and stuff represent the number that usually appears right...

stars are formed from gas clouds, these gas clouds posses potential energy and kinematic energy, they may also exhibit a density contrast, theory tells us that collapse of the gas cloud starts when PE overcomes KE, but i can find no explanation for the trigger to this collapse ,put another...

Recently in Chemistry we have been doing about how it is possible to identify carbon compounds by how many proton environments there are around a molecule. For this we look at graphs with various peaks dotted around them, this is not what bothers me, what bothers me is that some of these peaks...

This came about on a test today (we have handed it in) and it just got to me. I didn't think it was hard until my teacher made an outrageous claim. Here goes nothin: A hammer strikes a nail, and the nail goes in .8 cm. On the second strike, it will go in .7 cm. It is a geometric sequence...

You know guys, the planets is composed mainly of two types of rock material, Fe-material( siderolites) and the stony element (aerolites), these are heavy elements and available in the apace, which formed planets and stars within 1-2 billion years just because there were two Big Bangs, one...

coral castle mystery... pretty interesting http://www.fortunecity.com/greenfield/bp/16/coralcastle.htm

Dark matter?? What's that?

http://story.news.yahoo.com/news?tmpl=story&cid=573&ncid=757&e=2&u=/nm/20040211/od_nm/fires_dc Hmm, any guesses on what's going on here?

http://www.eurekalert.org/pub_releases/2004-02/cu-aua020304.php

Firstly, just a high to everyone, (first post, aye). Now, everyone has been saying that FTL Travel (Faster than Light) and even the speed of light is impossible. (dammit... ) than how is it that light can go at the speed of light. Now, for some touching back on the SOL theory. As you...

Why is there never thunders during winters? Shoudnt the cold air be even more conductive?

The question is: If a sprinter running at 10 meters per second could convert his kinetic energy into upward motion, how high could he jump? How do I solve this if I use the KE = 1/2 mv^2 I don't know what the mass is?

Ok I am not especially knowledgeable in thermodynamics or physics so I am sure the answer to this is quite simple. However to me it is quite a mystery. This is my thought. You have a cylinder filled with water; above it on supports is a solid object the exact size of the cylinder. Through...

Va Va Voom! I know a lot of the British people have seen the new Renault Clio adverts however I am not sure whether it is shown in the U.S. Anyway Thierry Henry (a famous French footballer...AMAZING) goes on and talks about what is Va Va Voom and what isn't Va Va Voom. I was just...

What determines the Colour of BLOOD And why the colour of insects different? I don't know Biology But i want the answer for above just to add to my knowledge

A question for Monique and anyone else who knows this material... Everyone born into my family has blue or grey eyes. Even when my mother's sister married a brown-eyed man, their children had blue eyes. Every single person born into our family has eyes of some shade of blue. Now, I don't...

I am very eager to understand what energy really is, thought no one really does. Are there more than one definition of energy? Is energy a property within all objects and thereby unifies all objects? Is it true that every object has a potential energy?

Why is the speed of light a constant?

Please take a look at these lines which demonstrate my problem in a korn shell terminal: First I defined var with a newline embedded in it. I printed it and, as expected, got abc def. I printed the same thing to file1. Next, I edited it using the pattern operator ${var//\\n\} to...

I first read this story in New Scientist when I was collecting it. Here are some highlights: The article has been reposted here: http://www.you.com.au/news/362.htm and in many other places. Any comments?

It seems to me that this is just a simple algebra problem, that doesn't have much to do with waves, but it's the only problem on the homework that I can't figure out. :-/ I know there's an easy solution to it, but I keep getting the wrong answer. Anyway, here it goes: A seismographic station...

I have an assignment free night and thought I would make a post that hopefully hasn't been made before. A discussion of perfect numbers: A positive integer n is said to be perfect if n is equal to the sum of all its positive divisors, not including n itself Alternatively, if σ(n)...

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?

Sometimes when I am driving I make myself the following questions. Why do the front windscreen of cars steam up? What is the physical reason? and what is the best way to eliminate the steam? I have heard many theories about the cause and how to act. who knows the right theory?

http://www.space.com/scienceastronomy/jupiter_dark_spot_031023.html

http://www.adn.com/alaska/story/4206897p-4219148c.html

I am posting here since no specific claims are made. This seems to be a good example of... http://www.news24houston.com/content/headlines/?ArID=16799&SecID=2

http://www.sabcnews.com/south_africa/general/0,2172,67329,00.html

http://www.upi.com/view.cfm?StoryID=20031006-113325-5591r

Observations from the Galileo spacecraft suggest that Jupiter's moon Europa hides a liquid ocean under its icy top. To protect the planet-sized world, considered a promising site to search for life beyond Earth, NASA engineers crashed the robot ship into Jupiter on September 21. This...

http://www.sciencedaily.com/releases/2003/09/030929055601.htm

Question posed: Julia is as old as John will be when Julia is twice as old as John was when Julia's age was half the sum of their present ages. John is as old as Julia was when John was half the age he will be 10 years from now. How old are John and Julia...

http://archive.ncsa.uiuc.edu/Cyberia/NumRel/GravWaves.html Eddington was not the only skeptic. Many physicists thought the waves predicted by the theory were simply a mathematical artifact. Yet others continued to further develop and test the concept. By the 1960s, theorists had showed...

Why is it said that a black hole is a literally bottemless pit in space-time? If it weren't bottemless, then the singularity inside would not have to be of infinite density. I'm not sure if I have missed anything important, so PLEASE help!

I was reading In Code by Saray Flannery,one of the problem in the book bothered me, it is not the problem itself, it is the solution. A Party Trick If someone tells me 2, 2 and 3 are the remainders when she divides her age by 3, 5 and 7 respectively then I can work out her age. Solution...

http://www.kansascity.com/mld/kansascitystar/living/special_packages/starmagazine/6693767.htm

http://www.paranormalnews.com/article.asp?ArticleID=725

dear reader, what is the mass of light particels?

dear reader, what is comptons effect.how did compton do this experiment?[?] :smile:

Imagine rolling a coin with a radius of 1 unit on a flat surface. To get translated 2[pi] units, the coin must obviously roll 1 revolution. (the angle swept is 2[pi] and the arc length covered equals to 2[pi]*r = 2[pi]*1 = 2[pi]. Now imagine rolling a coin on another stationary coin with the...

""During [most of] July, our water temperatures were, I would say, right around normal," said Capt. Butch Arbin, head of the Ocean City Beach Patrol. That's in the low 70s. About two weeks ago, he said, "there was a tremendous change in temperature, [dropping] as much as 10 degrees overnight."...

Check this site address out: http://scitoys/scitoys/scitoys/magnets/gauss.html It is a neat little science project site, and I found this project the most interesting (except for the non-elecricity requiring radio) on their site. How it tells you it works(shortened): You take a ruler and...

"HOWELL TOWNSHIP -- They've come late at night, holding flashlights, their beams cutting the dark in the middle of 1,000 acres of wheat fields. They've come in the afternoon under blue sky to lift their arms and pray." http://www.freep.com/news/mich/signs5_20030805.htm

"The notorious "elephant man" may have suffered from two rare disorders, according to scientists." http://news.bbc.co.uk/2/hi/health/3084483.stm

I'm sure you all have seen them, I just wonder if anyone knows what they do: I have noticed traffic sensors of some sort in various places over the last few months. They consist of two long wires which look like co-ax cable duct-taped across the road/street/lane/highway. They are connected to...