Recent content by NebulaBilly

I just used a made up figure, just to ask the question how i would measure the temperature of radiation if i have a background radiaiton on 1.9K, its not a figure i have got anywhere i just used it for the purpose of the question

My apologises i did not mean to mislead anyone

If there was background radiation of say 1.95K what would be the correct way to calculate the temperature of radiation at t1? Do we need to know what t1 is and also i have looked at Stefan Boltzmann law but i do not think that formula would be appropriate for what is trying to be achieved here.

Hi Kimbyd, i appreciate your answer thanks for helping out in my discussion. Yes that is correct, if there was a balance, the universe would not be here, and it is also fascinating that nobody as of yet can explain how matter and anti matter became imbalanced.

Fresh 42, The question I pose is how I read it, if I was to try and make it clearer the only word I really missed out was Imagine. So Imagine there was a universe exactly the same as ours but there was no imbalance between matter/antimatter. What time would baryons Disappear and What time would...

Hi i have a problem/question. If there was a universal exactly the same as ours where there was no Imbalance between matter/antimatter at what time would baryons disappear and also at what time would the last scattering of photons occur? I understand that if there is no imbalance then...

Ok so let's try and do this, so D = dtana if I was to use the numbers 60.1 Mpc and 4 arc minutes converted into radians then it would read D=60.1tan0.01, this looking good so far? that would be 0.01Mpc what if I wanted to used Kpc would = 10?

Yes I mean I could use the basic trigonometry but would you not need the arc minutes in radians? or can it simply be 60.1xTan(8/60), I was trying to come up with a similar way and you are correct they way I am trying to do it I would need to convert arc minutes to seconds and the Mpc to Parsecs

The problem to solve states the edges are 4.0 arc minutes apart, its why I would include the arc minutes, like I say arc minutes I am not sure about. Also I think I wrote that incorrect Dia = Distance x Arc Minutes

My last thread got lots of hits and was a success so I thought I would start another discussion based on the Galaxy I was speaking about, In my previous thread we found the distance to the galaxy, now I want to take this further and work at the diameter of the galaxy. If two edges of this galaxy...

All looks good atleast can see how they got there now, sometimes the simplest way seems the most difficult.

Hi JMz yeah 900 but i think its because we did it incorrectly. If i do the mean like you suggest as the stars are opposite side of galaxy so mean would work, the recession speed would be 4,505km/s and then we would get a distance of 60.1 MPC

Hi thanks for your reply, i thought maybe a good way would be to calculate the redshift, then x it by speed of light, this gave me around 900km/s

I have been having a conversation with a few friends, and we have been discussing the speed of stars in a galaxy base of the wave lengths. We have 2 stars measuring wave lengths 494.6nm and 494.2nm. At rest the wavelength is 486.1nm. From this we managed to deduce that the speed of both stars...