Recent content by Walternate

Hello! I have a small question, in my textbook and everywhere I look online it states that to find the redshift of a receding galaxy from the spectrograph you divide the change in wavelength by the original point you are measuring from. The problem I have is, if there is a 20nm shift for...

Thank you Bob :) I can see I was way off with what I was trying to do then. I'm not sure where I got cm3 for flux either, I should have spotted that really! I imagine flux is measured through a 2 dimensional plane? I will have a read of what you posted for me so thank you! But I think I am a...

Hi! Hopefully I'm not being too stupid, but I'm trying to work out the radiation dose received at a particular point in space being subjected to a high rate of proton flux. I think.. that I am right in working it out this way so far, for instance if the flux rate of Protons >100Mev is 10^7 cm3...

Thanks both of you :) Yes I think I understand know, what threw me was that this is a Level one book and it put this in there without any warning and not even a statement like 'while this may seem to make no sense it does, but we will not be exploring why in this course' which it has done for...

Hi! Hope someone can help, I am currently studying an Open University course and I am a little confused by a statement in one of the textbooks. It says that the value of the fine structure constant increases with collision energy (in Electron/Positron annihilation). I am probably being...