Heat

Correction: All motion does not cease at 0 deg. K. Vibrational motion persists at this temperature and substances therefore posses a vibrational zero-point energy.

We live and learn.

zero point energy is not necessarily motion. It is the zeroth quantum state for vibration (example is a simple diatomic molecule of HCl). The energy of this vibration state is above the potential well of the molecule in terms of potential energy vs interatomic distance. The same can also be stated about the rotational quantum states. There is no particular energy to be gleaned here, since the lowest quantized state is the state of the system a 0K.

If there is no vibration-rotational energy in the bottom state, then how is there motion? I keep hearing about zero-point energy, but I am completely skeptical about its importance or relevance to the matters at hand.

Thanks for your response. I quote from "Inorganic Energetics" by W. E. Dasent. He definitely knows more about it than I - so I must defer to him.

Quantitative idiocy is proportional to ignorance, however the converse cannot be derived.

For example, there is a cure for ignorance called education (whether self-inflicted or not), and has even been tried with some success on prison inmates. The contrapositive is not proven, as there is no cure for idiocy.

Mike, Ignorance is NOT idiocy.

Ignorance = Not knowing the answer.

Idiocy = Not understanding the answer.

We are all 'ignorant' of things until we learn about them. Remember, the CEO if International Business Machines thought that the market for Personal computers would be 'six, worldwide.' We were all 'ignorant' of the power in these devices back then.

As has been stated: no cure for idiocy, or insanity. Both expect to do things the same way and expect different (successful) results.

At least an ignorant scientist (such as myself) can have hope. I can hope to learn what I am ignorant of that is stalling my present research, but I would be a complete idiot to keep doing the same failed experiment over and over (and seeing an output impedance of 100-1000 Ohms), but expecting that "next time" it will work, and I will "magically" get 1 Ohm.

For instance: I was making a thermal battery (recharges using heat). I had some that were demonstrating about 10 Ohms output impedance at 80 C. The problem was the configuration was eventually shorting out the potential against the steel container. (Who told me a steel container was a useful idea in the first place?)

I wanted to try getting the electrodes nearer each other, so I tried some off the shelf battery separator (made for wet cells), that was highly porous thin PP (I won't mention the trade name of the material for obvious reasons). The cells made thus far with this material simply do not work at all, or have really high output impedance (>1000 Ohms). If I was an idiot, I would keep making them the same way, expecting a better result. If I was smart I would go back to what was working, and figure out using the same materials as before (natural fiber) to get thinner electrode separation without shorting, and also use a non-conductive high temperature limit container.

Am I making sense here, or is this mostly illegible babble?

Q:What is the difference between ignorance and indifference?

A: I don't know and i don't care.

You, sir, have hit the target dead center.

I had actually forgotten that old 'two liner' joke that explains the terms so succinctly.

I think that line was from Pretty Woman.

another strike

Both ends at once - double diarrhea.

But why not, everything which has heat does not emit its molecular kinetics in the realm of radio, UHF, VHF frequencies' bandwidth, why at some bandwidth in the infrared and above? Quite weird, actually. It must have been directly dependent on molecular dynamics.

Wow, you must have been through to all these. Awesome links by the way.

The heat that comes from my wood burning stove is NOT electromagnetic!

But the heat radiated from it, is.

Please define what "heat" is to you. By my way of thinking the "heat", which traverses space to get from one object to another falls somewhere on the electromagnetic spectrum. Does it not? Ergo it is electromagnetic!

The sub-set of a set is not the same thing as the whole set, even when the other sub-sets happen to be empty in a given circumstance. In thermodynamics, radiant heat transfer can never be an empty set but the other two transfer mechanisms of conduction and convection can be empty sets.

Are you sure that someone didn't slip an electromagnet into your stove?

WHY DON'T YOU LEARN HOW TO USE A SEARCH ENGINE????????

Thermal radiation - Wikipedia, the free encyclopedia

Even someone as dull as you can do it, I'm sure.

Are you sure about that?

No wonder. Hmmm. Gender test might not be essentially done through an ulltra scan.

"It's a girl!, Madam".

How do heat and light reach earth unless they travel in the form of radiation(waves)?.

At what distance or wavelength attenuation of sound,light,heat,smell disappear.

Smell? really? Are we holding a calf branding this week? Basically one has to be upwind of the calf (and the branding iron) if one does not desire a snoot full of hair smoke.

Just the radiated heat, not the conducted or the convected.

Perhaps I can explain it so a cowpoke would understand. If you are standing by a branding fire with the hot sun beating down on your neck, the heat you feel on your neck is radiated heat. As you grumble about getting sunburned you reach out and grab the working end of the branding iron. The brief moment before grasping the iron you feel a small rush of hot air into the palm of your hand, this is convection heat. As your hand closes around the red hot iron, and you are getting 2nd and 3rd degree burns, you are now experiencing conductive heat.

You want a little salve with your lesson?

I've heard down south many were poked. A burning fire that never runs cold, could be a a form of radiated heat.

Exit stage left - screaming.

Fiction and fairy tales!

Could you please go back to middle school and re-learn American English with an emphasis on what a complete sentence actually is and how to write one?

Nice one! There IS a balm in Gilead! If there were more cowpokes, and less cell phone geeks, the world would be much safer, and more enjoyable with a cold one!

The heat of passion might be due to animal magnetism, but that is not the same as electromagnetism.

Probably not. Due to recent breakthrough discoveries in the scientific world we are on the edge of learning many of our theories and assumed physic laws may be somewhat flawed. It could well be that the presence of heat in some cases might just be the absence of cold. No? Have you ever noticed that when cold is applied to one end of a hot piece of metal the opposite end of the metal sometimes increases in temperature. I wonder why?

Probably whoever is holding the hot end of the metal is now facing neural sensation he was not sensing when the metal was just lying there hot all over, but now he is holding the hot end up, and dipping the cold end in the bucket of cold water, hence the metal seems to be hotter.

Once while doing a study of thermal dissipation on stacks of steel plates (controlled cooling for H elimination) i brought the scans (IR gun) down to near ambient. I noticed that the heat was slowly transferred down the plate like a wave going from one end of the plate to the opposite end. As the plate reached ambient the waves were less pronounced.

So you are saying there exists a transverse wave, or is it more axial in the direction of heat flow?