Hot vs. Cold

On the contrary... it finally getting somewhere!

Wait! I think I just got it... Peter Gabriel -> lead singer of Genesis -> the first book of the Bible! Woof!!! That's a stretch

How do you say 'well duhh' in Russian ?

I believe our dyslexic friend Gwen meant to write: "No dog is female." I assume this would be in reaction to 1.) the negative connotations associated with the word "bitch" and 2.) the generally demeaning and limiting nature of gender labeling. I take Gwen's post as a hopeful and joyous cry: "Let every dog (and by extension every sentient being) be all that it can be!"

Wha?! Who?! Somebody actually used the "B" word in association to Gwen?!

Uh-uh. I got it Ken. And I concur.

B here, is not Gwen.

You don't even have to be dyslectic to see the obvious:

What's on everybody's mind, and keeps dropping the ball for some forty-thousand years?

A bitch.

... and named for a trumpet player, and an anatomical part, I assume.

How peculiar. I proposed a couple answers, just slightly off-color, and they apparently were deleted. Oh well, no great loss.

It makes Peter Gabriel a bit nicer.

Most science isn't written in the first person either. Dali didn't use 'I' much either. Leicester sounds confusing too.

But Dali did used the word "syphilitic" often when describing most people.

Didn't know that . He was kind of strung out though. He did some stunning 'realist' stuff which doesn't seem to get shown much. Those ants make me squirm whatever the interpretation.

Google "Peltier Junction" for more information on electronic cooling.

Isn't radiation just transfer of energy ? Outgoing radiation leaves cold ,and incoming radiation gives heat. I don't know , I must have recieved too much anti-relaxation today because I'm tired.

"How come there's no radiation to make things cold like there is to make things hot?"

Our "Guest" is, I think, pulling our collective leg. Tell him to pull the other one!

Thermal energy allways flows from regions of higher to regions of lower temperature when left to fend for itself. It requires some mechanism such as a heat pump or refigerator to move thermal energy from a region of lower to a region of higher temperature.

See Thermodynamics 101.

In fact there is a way to radiate your object cold: make sure that no radiation from other objects can get to the object and absorb the radiation that comes off.

This is how cooling in space works: keep your cooler away from the sun.

There are even Stirling engines build on the incoming radiation from the sun and the outgoing radiation of the cooler. (which needs to be much bigger)

As explained by the oldies in here: cold is the absence of heat.

In most American cities, coldness can also be caused by the absence of rent.

duct tape and polyimide tape (kapton) are 2

very different things

Just for posterity , here is vermins current quote-line ;

"__________________
In space, your duct tape doesn't work... " Ha-ha. Hang on , people may think I made this up .

There really is a COLD beam. The hardware is "Right Chere" and this is the splaniation fot it.

http://en.wikipedia.org/wiki/Spallation

http://www.physics.princeton.edu/mumu/johnson/p-i-exam/pbartarg.htm

It is a beam that takes a higher level of energy and brings it down a notch ot two.

The "Gee Wiz" stuff does exist ya just gotta know who is playing with it.

I didn't read through all the responses after several off topic ones, so I might have missed actual answers, so sorry if this is a repeat, but...

As far as the original question - the best way to start thinking about thermodynamics is to get rid of the hot and cold idea... there is no such thing as cold, only heat and lack of heat, or, more accurately, how much heat. Thermal energy flows 'downhill' from areas where there is a relatively high temperature to areas with a lower temperature. To make something 'cold' you have to remove heat, which requires the use of some energy and some process, like pumping water uphill.

On duct tape in space - I haven't taken the time to actually look up what the adhesive and backing are specifically, but the cotton is OK as long as it's dry so it won't freeze solid. The adhesive will boil when exposed to vacuum (partial pressure deal) and become something along the lines of asphalt (look up outgassing if you want). Same thing with oil based lubricants. The adhesive also becomes less effective (stiff) as temperature drops, but the vacuum is the main reason it won't work. The tape would be a useless lump long before any effect from radiation could be seen. Kapton tape with acrylic adhesive is basically the duct tape of space.

Bravo!!!

But the coldness of the sitation that I have absorbed has rendered my congitative thought prossess in a state of coldish fulidity, which robes me of my intuitive congunctiveness.

Oh, no! Here it come again! Duck!!!

Flogistan! Flogistan! My kingdom for some flogistan!!!

I bet you never looked for the Gecko Tape thread I alluded to, did you. Being a bit of a Threadworm I know these things !

I didn't have to look for gecko tape. I used to live with several of them. Dang! Do they like crickets or what?!

Yeah , those Ducts just haven't got the tongues for it. Silly quacking and trying to fly. Must have done something real bad in a former life.