jim mcnamara

Hi Jim, in one of your comments from 2015, to cool water, you recommend placing a pipe 12 feet underground going back-and-forth so a lot of pipe can be put in a smaller area.
My question is: what is the ratio of how much surrounding soil must there be around the pipe, separating it from other pipe, so that the soil does not start to heat up. Or must this be done experimentally?
I am asking because I have also seen this suggested to condense water from the atmosphere. Many thanks,
Dan Kainen

Dear Jim,
In one of your replies to a post ("Which time of the day does the sun have highest and lowest UVA") you stated that UVB is at least a thousand times more damaging to your skin than UVA. However, except for the link you added, I can't find any information on the internet that supports this claim. Do you perhaps have some references to scientific articles that come to that same conclusion?
Thank you so much in advance!
Karlijn

Is that Redi Killowatt inside the vacuum tube? Cool!

Congratulations again on getting the Mentor title! You deserve it and I'm glad the biology forum has you! :) I tried to PM you but it wouldn't let me!

Jim, Have you read Paul & Anne Erlich's book, "The Dominant Animal"?
Sandy

Dear Mr. McNamara, is your primary interest in one of the earth sciences? Thank you.
Sanborn Chase