To: palmer
I dunno. The mine I used to work in was about a thousand feet deep. It was about 70 degrees F, IIRC. I hear diamond mines in South Africa are deeper and hotter. So a gradient from absolute zero to the temperature on my deck could be considered to have the portion from absolute zero to 70 F due to the earth’s core and the last 20 to 30 F due to sunlight, the way I see it.
44 posted on
06/21/2016 1:46:35 PM PDT by
wastoute
(Government cannot redistribute wealth. Government can only redistribute poverty.)
To: wastoute
Not likely. Your 1000 feet has a gradient of about 15 degreees (55 near the top depending on latitude) and 70 at the top. That's a very low gradient for heat flux. Consider midsummer on a sunny day. The earth's surface might reach 120F but 6 feet down it is still 60F or so.
Bottom line is that the earth is a very good insulator in general.
47 posted on
06/21/2016 2:25:10 PM PDT by
palmer
(Net "neutrality" = Obama turning the internet over to foreign enemies)
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