Recent content by split

I just experienced an extremely weird coincidence. I was reading sosmath.com's CyberBoard and this thread just happened to be in the algebra section: http://www.sosmath.com/CBB/viewtopic.php?t=8884

When trying to determine whether a number is prime or not, the following algorithm is often used: Test all numbers up to [sqrt[n]] ([x] is the ceiling of x) to see if any divide evenly into n. If any do, the number is not prime. My question is, why do you only have to test up to [sqrt[n]]...

Sorry for misunderstanding those who responded. I am just interested in learning about chemistry. Whether or not what I am doing is banned in 49 states isn't important to me :). Liquid nitro just looked like something fun. I think I have *SAFE* experiment ideas taken care of, now that I've...

Seems you can't ask a question around here without being mocked. I know you all must show off your incredible wit, but c'mon, all I wanted was to learn something. I think I made it clear that I do not want to make things explode, nor do anything else dangerous. If liquid nitrogen is an...

The first link did not work because the PhysicsForums messageboard software does not handle URLs correctly and included the comma the first time. Go to: http://www.polsci.wvu.edu/Henry/Icecream/Icecream.html Actually, I'm not really interested in explosions. Just wacky things that will...

I was inspired after reading http://www.polsci.wvu.edu/Henry/Icecream/Icecream.html, a site that explains how to make ice cream using ln (which seems to be quite popular.) I became obsessed after reading this site: http://www.physik.uni-augsburg.de/~ubws/nitrogen.html Looking at the first...

My friend and I have a lot of ideas for liquid nitrogen experiments (and we will be safe! :)), but we have no idea where to order it from. If from an online source, try to be specific. If in reality, try to give a little input on the process. Thanks.

But what about just the concept and its implications? A general overview of what it is should be taught, shouldn't it?

Modern Physics -- What's the Deal? Until recently, I had not heard of things such as QM or relativity. I had always thought of things using the Bohr (right?) model taught to me last year in physical science and, well, throughout my public schooling career. What is the current state of...

Wow, I never knew the Princeton one existed. That's one of the best I've come across. There are quite a few links at http://math.smsu.edu/~les , while we're sharing. The one at Ole Miss gives out TI-89s, if you're interested.

For those of you who enjoy puzzles, someone on http://livejournal.com that features a new math problem posted daily. Anonymous responses are permitted, but LJ accounts are now free and it doesn't take long to sign up. Take your pick. Mike Nolan http://mike.zx.ath.cx

Let's make it "what is your favorite constant?" All of these constants are important for different reasons.

So, what is it?

Argh. I meant "compressed." Is there any matter that exhibits interesting properties when greatly compressed? Also, why can't water be compressed much further? It seems to me like anything could be compressed with the right force. Then again I'm not exactly a professional physicist. Maybe...

What would happen if you were to take some liquid, let's say a half-gallon of water to make it easy to think about, and pour it into a small chamber, then condense it as much as possible? I'm talking about some extremely stable chamber that can withstand lots of pressure from the water being...