Recent content by Theinvoker

It is both, that's why its 1/a^4. As the universe expands (or contracts if you are looking that scenario) it is affected by the 3 spatial dimensions and by wavelength change due to the constant speed of light :)

Well that was a schoolboy error! I guess that's the beauty of the internet though, I can still go into work tomorrow without having to hide under my desk until the embaressment passes lol. I will edit my previous post just incase someone reads it but not the reply :)

The problem is, at the current time EM radiation only makes up a tiny portion of the universe. It was important in the radiation dominated era (in the standard model) when the universe was small, but it scales as 1/a^4 so drops off very quickly in terms of significance, so in terms of the BB...

Not sure about 2 off the top of my head but; 1. Approx 10^-5 % 3. No, but it did at much earlier epochs (assuming the standard model)

I agree in the technical sense this is true especially for people reading certain areas, however, most people, press and even books will refer to active and normal galaxies, the former having an active core and the others having a largely dormant core. Even MNRAS has a keyword for publication as...

Short answer is, it interferes with itself. It only really applies when the slit is larger than the wavelength and is a superposition of sets of waves diffracting at various points along the length of the slit.

Could be one of many reasons, but if you assume it to be correct it is not that surprising. In classical physics laws, people are used to X = Y, and that it will always be the case (in ideal conditions). However, in quantum mechanics you are dealing with probability and the equation must...

Life could be easy to form by DNA, but hard by any other method. Therefore it can form quickly by 1, but maintain invariability by 2.

No, quasars are active.

Well that makes me feel even worse :P lol

Yeah most are, the only ones in the UK I know that are different are Oxford, Cambridge, Open and possibly UCL although I'm not sure, which are all 80-85% for a first. Kinda sucks as if you mess up half a question and bang goes you first on that paper / assignment lol.

I want togo to your uni, 2:1 is 70-84% at mine, and first is 85+ :( lol

Ok now I feel like a right idiot lol. Many thanks couldn't see the wood for the trees! :)

Thanks for the quick reply. I am still a bit lost tho :( As an example: x^2 + 24x +133 I can see the answer is (x + sqrt11+12)(x - sqrt11+12) by using my calculator but can't figure out how to get there. Many thanks again!

Hi all, I was hoping someone could help me with factorizing an expression that has no common factors. I'm working through some pre-module work and I've never come across them before and have no idea where to start! They are all in the format: x^2 - ax - b (where there are no common...