Recent content by Jvonderlinn

I always thought I was quite smart, but very lazy! I have a BS in Aero engineering and worked at Boeing for 37 years. I used to understand time derivatives but just turned 75 and forget stuff as fast as I read it. Re your wonderful answer, "I'm beginning to see the light". Love reading about...

Thanks Marcus. Problem is my browser does not give me the reply option, only Preview Post and Submit Reply, neither of which present a text box. Not sure how I found the one I am now using? I tried Chrome and IE and same problem with each. Anyhow, I did get the Charley link to work and have read...

I am not a cosmologist so do not understand how light from the most distant galaxies could take 13.7 billion years to reach us when 13.7 billion years ago the universe was much smaller.