hotdensestate

COMIN' OUT OF MY CAGE AND I'VE BEEN DOING JUST FINE :cheesy:

chair looks like shit if you ask me

Right, awesome. So NASA launched something called COBE, which measured the actual cosmic microwave radiation. And every single bit of data it collected agreed basically 100% with what was theorized. simply put it's the most impressive example of actual evidence agreeing with an idea, in, like, ever. it's extremely impressive. That's basically it. The ideas aren't hard just usually when they're being talked about the big words make them totally incomprehensible. :P

Okey! So the people who came up with TBBT (I am going to call it that cuz I am lazy and don't want to type out all the words) thought. "Well. The whole universe exploded. We bet it was unbelievably hot afterwards. LET'S GO DO SOME MATHS!" So they did some mathz and came up with a graph of what cosmic microwave radiation would look like. They chose cosmic microwave radiation because microwaves have the longest wavelength and therefore are the oldest remaining light in the universe... again details are not that important, just all the microwave radiation we find in the background of our observations of space is from OLD STUFF. OLD OLD OLD. Okay, so, stuff gets hot because of energy, right. Energetic particles let off light coz light is a type of energy, basically. So, by examining this old light we get an idea of how much energy was running around a long time ago, from when the old light was given off. Since cosmic microwave radiation is basically the oldest light in the universe, it gives us the best picture of how much energy there was early on in the universe, which shows how hot it was, which is why these people made a model of how much of this radiation there would be, coz they wanted a way to show how hot the universe would be in a way that we could actually measure TODAY (the microwave light that was given off early on is still around, so we can measure it). Not sure how clear that was... so... still with me?

Naw, s'okay. I guess I will do the general theory first. The Big Bang theory is a theory that our entire universe was contracted into basically nothing (a point... infinitesimally small) until it basically EXPLODED at an incredible rate, releasing unbelievable amounts of energy and sending stuff flying everywhere. It explains why our universe is expanding today, still. (Physicists assume that our universe is expanding mainly because of something called a redshift which basically says that light coming from objects is getting "redder" or basically lower frequency, which implies that they are getting further away... I can get into redshifts too but they aren't really relevant to this particular graph.) The theory itself is fairly simple. Basically, it just says "the universe was tiny. then it exploded really fast. and it got big. and it's still getting bigger, but not as fast. that's how the universe as we know it started! kablooey!" With me so far? :nice:

hm. I can try to make it a little simpler if you like. first off, how familiar with the theory are you exactly? Do you know what it says or should I explain that too?

It's especially amazing coz it's so hard to get evidence for physics theories these days, since most of them are about the early universe or stuff that is too small to observe.

Okey, simply put, the people who first came up with the idea of the Big Bang theory had a particular graph of the way cosmic background radiation -- basically, how hot the universe should be everywhere. (Because an explosion of the entire universe from an infintesimibly small thing is a big fucking deal and would release an umbelievable amount of energy in the form of heat.) The people who came up with the Big Bang theory had a graph of what cosmic microwave radiation would look like. (Cosmic microwaves are basically the oldest light in the universe.) That graph is the line part of that picture. I don't honestly understand the equation in the upper right but I assume it models the graph. There was a mission called the COBE mission (standing for COsmic Background Explorer, the name of the satellite doing the observation) and it started collecting data points for cosmic microwave radiation. Cosmic microwave radiation is basically the oldest light in the universe... so according to the Big Bang theory, basically from when the universe was hottest. And the people who came up with the Big Bang theory had that graph of what it would look like. And then, the COBE people started gathering data on it, and they compared it with that graph, and that's all the tiny little dots on the line. In other words, EACH DATA POINT falls essentially EXACTLY on the line. In this representation of the graph the error bars are too tiny to be seen. Actually the reason they are too tiny to be seen most of the time is that they are EXACTLY ON that line. So basically it proves that the universe was really hot everywhere in the early universe. It's one of the strongest pieces of evidence for the Big Bang theory that basically anybody could hope for. It's harder to explain the more complicated stuff but it's one of the most amazing examples of experiment agreeing with theory ever. When it was shown in front of a room of astrophyisicists every one of them spontaneously stood up and started clapping for like ten minutes straight. Because it is that unbelievably awesome. Nothing ever agrees with a theory to that extent. :nice:

Seriously... that graph represents one of the most MIND-BLOWING things in science. Do you know what it is? I can explain. It's fucking mind-blowing. Your mind will have been blown.

I have only one thing to say in regards to this theory:

It's okay. Most people are.

Please. That song is rife with scientific innacuracies.

I'm improbable? What part of me is improbable? Honestly.

I'm not sure what you mean, it isn't my day. I don't own a day. That's impossible.

Hey you!

Hi everybody :nice: [ame=http://www.youtube.com/watch?v=cBN-CAhOYQ0&feature=channel]YouTube- Gardyn[/ame] Pogopogopogopogopogo (-inf, 3)

I am almost certain its reputation comes from the innumerable applications of calculus, which (I guess?) are harder. But calculus itself is nawt hard.

Like people r?

Guess so. Doing integrals next but they don't seem too bad either.

It really is. why has it got such a reputation??

:blank: Or the kind in our textbook at least.

...Alexa, it seems we're at an impasse.

Chris, it seems we're at an impasse.

Forcing self not to cry.

crest is drunk