Thanks for all of your informative posts. Also, thanks for mentioning (and correcting me) on what Dr. J considers "consumables".
I read all of the new posts, but eagerly look for those from you, Bill (the guy's ingenious!!), Richard , Jacob, Glenn, F.R. (haven't seen anything from F.R. recently - i like his "tell it like it is", or even "tell it like it isn't" approach - even when i disagree with him) & also a few others whose names happen to escape me at the moment (my "old-timers" actin' up).
Glad you said the "Cuben Cigar". Frankly, I didn't have the nerve. I think a couple of my recent posts exhausted my allotment of bad jokes for this month..
I'd very much like to read your notes on heat xfr. When you get a chance, please post them.
It was around 1968 that I had the great displeasure of trying a space blanket. It was all I happened to have with me, & so had to make do with it. The daytime temps were normal for that time of year in CT & I only had on a short-sleeve shirt, jeans, cotton socks (yes..the "death fabric" as another poster a while back termed it - wool was too expensive), & canvas sneakers - was warm enough during the day. No other shelter (no rain was in the forecast). We were traveling light (this was b/f i had the money to buy all of that not-so-great fancy, expensive, & heavy gear fr/brand name mfr's.). It was a cold night for early June (prob. in the 40's near/after midnight) & no wind. Surely, this new fangled space blanket would keep me warm just like advertised - that thing was supposed to be a veritable toaster of radiant heat!! NO WAY. I slept very little that night even though surrounded on three sides by natural shelter & insulated underneath by a makeshift bed of leaves on top of small hemlock boughs ("boughs" - seemed like a good idea at the time). Don't know what the temps were. Maybe a cold front moved in. Don't know. Actually, shivered quite a bit. Didn't sleep much - maybe 3-4 hrs all night with most of that coming when I first fell asleep b/f it got too cold. I think I only slept on & off after first waking up b/c I was exhausted from a full day of strenuous hiking in the hills. Should have practiced some firecraft, but didn't want to be noticed. Don't ask!!
[...ok... (the statue of limitations on trespassing has long since run out)... We were on Regional Water Company property practicing, what we called "Indian Camping", which, except for the hemlock boughs, might nowadays be called LNT. Great land (no hiking passes were issued back then by the RWA) with deep forest, great berry patches (too early in June for berries), rock cliffs, small caves, lots of wildlife, & one very rocky ledge with lots of loose flat rock where snakes, including some timber rattlers, would come out and sun themselves. We were teenagers & could out run the Rangers - most of the time! We never used fire & other than an occasional dip in the lake, never polluted the water. Scout's Honor. How's that for rationalization. Worked for us. My conscience would nevert let me get away with it now though. Well...what the RWA couldn't do (i.e., stop us), "Uncle Sam" eventually did.]
Now back to our regularly scheduled post:
My three friends had wool blankets. They slept fine. Come to think of it now, who ever saw an Indian with a space blanket?!! Should have known they must have had a good reason for not usin' 'em!!!. For my part, have never bothered with a space blanket since.
I guess in space such reflective surfaces are actually used the other way around, i.e. to keep radiant energy from the sun from heating things up. At least so I've been told by an engineer from a sister division who makes the space suits for NASA. With no atmosphere, things can get really hot up/out there.
The space blanket certainly did nothing for me that night.