Recent content by Endervhar

I generally regard anything in the popular media with extreme suspicion, unless you include popular science books in this, in which case I might drop the "extreme". John Gribbin suggests using Universe (higher case U) for the detectable universe, universe (lower case) for any other proposed...

This may seem a little off topic, but its a question that arose from my thinking about the subject matter of this thread.At the time of the BB the Universe was smaller than an atomic nucleus. It is sometimes described as being "infinitely small". Unless, at t = 10^-43s, the Universe had a...

Just an update. My friend visited and was quite happy with what I could tell him. I have to say there is still quite a lot more I want to sort out. However, I'm awaiting a date for admission to Hosp. in London, so things will be a bit disrupted for a while. I wanted to say thanks for the...

Makes sense, thanks. Lots more thinking to do!

OK with that, except; how do you discover from the table that the light will be just arriving now?

Marcus, thanks for your continued, patient input. I had already suspected that something was wrong and had returned to the forum to post the following: Problem here? In the example I suggest above, the figure in Col 6 =5.4 and the figure in Col 4 = 3.5. 5.4/3.5 = (roughly) 1.543...

Thanks, I think things are beginning to make sense. Later this week I should be seeing the friend whose question started all this. I know he will not be looking for a particularly technical/mathematical explanation. Hopefully, something along the lines of the following will suffice, so I...

What is the significance of the "z" in S=z+1?

Shall have to give that a bit of thought to make sure I've grasped it; but perhaps not tonight.

Having looked back at the original table, and at the calculator, my interpretation of Col 1 begins to look a bit suspect!

Thanks for the good wishes. Recovery is progressing steadily. I think I feel brave enough to return to the table. I would be wise to check my understanding of the columns we have looked at so far, in case any of my questions arise from misinterpretation on my part. Col 1 looks as though...

Just a note to say that I'm not ignoring the helpful information that has been posted through lack of interest. Last Tue I was discharged after 10 days in hospital with pneumonia. I thought the enforced inactivity would give me a good opportunity to get to grips with this time/distance stuff...

Scrap that last question, the light just arrived!

So far, so good! Some light filters through. "...it took 8.7 billion years to get here..." Where did that come from?

Thanks again. I think things are getting clearer. I shall give it some thought before deciding if I still need to ask the second part of the question. The passage of light through an expanding Universe seems to have much in common with grasping new concepts as one gets older. It takes...