NET THERMAL RADIATION : You in a room as a reference.

IBdaMann wrote:

duncan61 wrote:The flow of thermal energy can be slowed

If you don't slow it with insulation, how quickly does thermal energy normally go from zero to sixty?

If you can slow thermal energy, can you also make it go faster, right?

I bet electricity works the same way. If you add resistors, it slows the electricity, right? ... and if you blow on it, I bet the electricity goes faster.

duncan, I take back everything I said about you. You truly are a genius. I don't know why I didn't realize it sooner.

I guess I really shouldn't judge any man until I've been bent over the same furniture.

James_ wrote: Are you that moronic?

James_ wrote: If you take 2 different wires 3mm in diameter and run the same current through them, you can get 2 different flow rates of radiation.

James_ wrote:the aluminum coated wire will be cooler because it will be releasing the heat of the current passing through the wire much more quickly.

James_ wrote: I thought everybody knew that it's difficult to weld aluminum because of how quickly it gets rid of heat.

James_ wrote:And this means that the frequency it radiates heat at allow for heat to travel faster.

James_ wrote: While I don't want to ask this question, do you and dehammer go to the same church?

IBdaMann wrote:

James_ wrote: Are you that moronic?

Sure, I guess.

James_ wrote: If you take 2 different wires 3mm in diameter and run the same current through them, you can get 2 different flow rates of radiation.

Are you conflating electricity with radiation?

Are you claiming that photons from different wires travel at different speeds?

James_ wrote:the aluminum coated wire will be cooler because it will be releasing the heat of the current passing through the wire much more quickly.

There's no trapped heat for it to release. Heat cannot be trapped and thus can never be released.

By the way, higher temperatures, not lower, result in greater heat.

James_ wrote: I thought everybody knew that it's difficult to weld aluminum because of how quickly it gets rid of heat.

I thought everybody knew that it's difficult to weld aluminum because of the physical properties of aluminum.

James_ wrote:And this means that the frequency it radiates heat at allow for heat to travel faster.

Heat is not radiated. Heat does not have a frequency. Heat does not have a velocity and therefore does not have an upper limit to its velocity that can somehow be "allowed" to be increased.

By the way, I thought it was the Van Allen belt that allowed for increased heat speed energy power velocity frequency radiativity emission travel. Did I misunderstand?

James_ wrote: While I don't want to ask this question, do you and dehammer go to the same church?

I religiously attend the church of UML and DeHammer won't go anywhere near it. He considers it sacrilege.

.

Are you conflating electricity with radiation?

Are you claiming that photons from different wires travel at different speeds?

duncan61 wrote:
Its winter and we have the gas convection heater on.If I turn the fan from 1-3 it gets hotter.Please explain?

duncan61 wrote:If you need to check how fast heat can go get behind a jet fighter at start up

duncan61 wrote:
IBDm wrote
Heat is not radiated. Heat does not have a frequency. Heat does not have a velocity and therefore does not have an upper limit to its velocity that can somehow be "allowed" to be increased.

If it is not radiated what does it do?

duncan61 wrote:Its winter and we have the gas convection heater on.If I turn the fan from 1-3 it gets hotter.Please explain?

IBdaMann wrote:
[quote]duncan61 wrote:If you need to check how fast heat can go get behind a jet fighter at start up

duncan61 wrote:Its cold here and I have a outdoor gas heater.

duncan61 wrote:It has a aluminium ring around the top and it radiates the heat

duncan61 wrote:generated by the gas burner down so it does not all go straight up.

duncan61 wrote:All the heat generated goes up eventually.

duncan61 wrote:At least you accept it is happening

James_ wrote:

IBdaMann wrote:

duncan61 wrote:The flow of thermal energy can be slowed

If you don't slow it with insulation, how quickly does thermal energy normally go from zero to sixty?

If you can slow thermal energy, can you also make it go faster, right?

I bet electricity works the same way. If you add resistors, it slows the electricity, right? ... and if you blow on it, I bet the electricity goes faster.

duncan, I take back everything I said about you. You truly are a genius. I don't know why I didn't realize it sooner.

I guess I really shouldn't judge any man until I've been bent over the same furniture.

Are you that moronic? If you take 2 different wires 3mm in diameter and run the same current through them, you can get 2 different flow rates of radiation.

James_ wrote:
If 1 of the wires has a coating around it that is aluminum so its core is 2.5mm in diameter of copper and .5mm diameter of aluminum, the aluminum coated wire will be cooler because it will be releasing the heat of the current passing through the wire much more quickly.

James_ wrote:
I thought everybody knew that it's difficult to weld aluminum because of how quickly it gets rid of heat.

James_ wrote:
And this means that the frequency it radiates heat at allow for heat to travel faster.

James_ wrote:

IBdaMann wrote:

James_ wrote: Are you that moronic?

Sure, I guess.

James_ wrote: If you take 2 different wires 3mm in diameter and run the same current through them, you can get 2 different flow rates of radiation.

Are you conflating electricity with radiation?

Are you claiming that photons from different wires travel at different speeds?

James_ wrote:the aluminum coated wire will be cooler because it will be releasing the heat of the current passing through the wire much more quickly.

There's no trapped heat for it to release. Heat cannot be trapped and thus can never be released.

By the way, higher temperatures, not lower, result in greater heat.

James_ wrote: I thought everybody knew that it's difficult to weld aluminum because of how quickly it gets rid of heat.

I thought everybody knew that it's difficult to weld aluminum because of the physical properties of aluminum.

It's not difficult to weld aluminum.

James_ wrote:

James_ wrote:And this means that the frequency it radiates heat at allow for heat to travel faster.

Heat is not radiated. Heat does not have a frequency. Heat does not have a velocity and therefore does not have an upper limit to its velocity that can somehow be "allowed" to be increased.

By the way, I thought it was the Van Allen belt that allowed for increased heat speed energy power velocity frequency radiativity emission travel. Did I misunderstand?

James_ wrote: While I don't want to ask this question, do you and dehammer go to the same church?

I religiously attend the church of UML and DeHammer won't go anywhere near it. He considers it sacrilege.

.

I thought there was hope for you.

Are you conflating electricity with radiation?

Are you claiming that photons from different wires travel at different speeds?

The amplitude of their emissivity changes.

James_ wrote:
That is so clever of you to say the velocity of the photon and not its wavelength changes. E = hv and you wanted to change v.

James_ wrote:
When aluminum changes h

James_ wrote:
then the emissivity of the copper wire is changed

James_ wrote:
according to Max Planck's work in black body radiation.

James_ wrote:
Do you take me for a fool to not know this difference in basic science?

James_ wrote:
You are either a complete moron or just an idiot playing games. I think these guys here know that the emissivity of black body varies.

James_ wrote:
And if it doesn't contain heat then its internal element will need to have an equal butt opposite effect.

duncan61 wrote:
IBDm wrote
Heat is not radiated. Heat does not have a frequency. Heat does not have a velocity and therefore does not have an upper limit to its velocity that can somehow be "allowed" to be increased.

If it is not radiated what does it do?

duncan61 wrote:
Its winter and we have the gas convection heater on.If I turn the fan from 1-3 it gets hotter.Please explain?

duncan61 wrote:
If you need to check how fast heat can go get behind a jet fighter at start up

duncan61 wrote:
Heat is thermal energy.

duncan61 wrote:You have to bring the nasty because you are cornered.I discussed this with my daughter while in the car together this morning and she confirmed that putting the frypan directly on my head would be conduction.You acknowledged
I'd be willing to believe that it radiates infrared electromagnetic energy, and that it conducts thermal energy, but no, there is no heat radiated because heat is not radiated.

duncan61 wrote:
Central heating has radiators.How does it make the room warmer?

duncan61 wrote:
What does the radiator in a car do.

duncan61 wrote:
I will have a go.After the thermostat opens coolant enters the radiator which has fins to increase the surface area to remove excess heat

duncan61 wrote:
by.Insert word here please

duncan61 posted random trivia as a distraction:
If an ICE engine gets to hot it will seize as the aluminium pistons will over expand the steel liners or cast Iron block

The radiator in a car maintains the operating temperature by convection

If the copper pipe I weld gets to hot it melts

I have welded aluminium with MIG and stick and it does not change colour.It melts around 660.C and when mig welding you need full protection it is a very bright process.

Stick welding is not as bright but you have to be very careful as it will just suddenly melt with no warning and a big blob will fall on the floor.

To do filler rod well all the material has to be polished clean.MIG welding you can get away with a bit of oxidising.

I had a 1968 B25 BSA motorcycle and it was fitted with a zener diode to release excess electricity being created by the alternator when you are running around with no lights on. It was screwed in to an aluminium heat sink that was mounted on the front forks below the headlight.

The sink was about the size of your palm and had fins to increase surface area.

duncan61 wrote: There are many was of dealing with excess heat

duncan61 wrote:Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature.

duncan61 wrote:Where I copied and pasted this from was a picture example of a pot of water on an electric element.

duncan61 wrote:The water boiling is convection.

duncan61 wrote: If the pot is lifted from the element it is radiation

duncan61 wrote: Is radiation not energy being radiated?

duncan61 wrote:I genuinely would like to know

duncan61 wrote:
ITN wrote
There is no such thing as 'excess' heat. There is never too much heat.

If an ICE engine gets to hot it will seize as the aluminium pistons will over expand the steel liners or cast Iron block

duncan61 wrote:
The radiator in a car maintains the operating temperature by convection

duncan61 wrote:
If the copper pipe I weld gets to hot it melts

duncan61 wrote:
I have welded aluminium with MIG and stick and it does not change colour.It melts around 660.C and when mig welding you need full protection it is a very bright process.Stick welding is not as bright but you have to be very careful as it will just suddenly melt with no warning and a big blob will fall on the floor.To do filler rod well all the material has to be polished clean.MIG welding you can get away with a bit of oxidising.

duncan61 wrote:
I had a 1968 B25 BSA motorcycle and it was fitted with a zener diode to release excess electricity being created by the alternator when you are running around with no lights on.

duncan61 wrote:
It was screwed in to an aluminium heat sink that was mounted on the front forks below the headlight.The sink was about the size of your palm and had fins to increase surface area.There are many was of dealing with excess heat

duncan61 wrote:
Convection is the transfer of heat by the movement of a fluid (liquid or gas) between areas of different temperature.

duncan61 wrote:
Where I copied and pasted this from was a picture example of a pot of water on an electric element.Simple stuff

duncan61 wrote:
.The pot on the element is heated by conduction

duncan61 wrote:
.The water boiling is convection

duncan61 wrote:
.If the pot is lifted from the element it is radiation

duncan61 wrote:
.Is radiation not energy being radiated? I genuinely would like to know

duncan61 wrote:The heat sink of aluminium on the zener diode is to remove the heat

duncan61 wrote:How does that stop the engine boiling over?

duncan61 wrote:You both referred to the lifting of the pot off the element as radiation.

duncan61 wrote:... the hot electric element is still radiating heat.

duncan61 wrote:You can feel it above the element

duncan61 wrote:
The heat sink of aluminium on the zener diode is to remove the heat the zener diode creates.If it was not in a heat sink it would get very hot

duncan61 wrote:
ITN wrote
There is no such thing as 'excess' heat. There is never too much heat.

If an ICE engine gets to hot it will seize as the aluminium pistons will over expand the steel liners or cast Iron block

So increase the heat.
How does that stop the engine boiling over?

duncan61 wrote:
duncan61 wrote:
I have welded aluminium with MIG and stick and it does not change colour.It melts around 660.C and when mig welding you need full protection it is a very bright process.Stick welding is not as bright but you have to be very careful as it will just suddenly melt with no warning and a big blob will fall on the floor.To do filler rod well all the material has to be polished clean.MIG welding you can get away with a bit of oxidising.

Guess you are unaware that there is no difference in the danger between stick welding and MIG welding.

Illiteracy: Sentences are separated by at least one space. MIG is an acronym, not a word. It is always fully capitalized.

I did capitalise MIG. Working with a flame and filler rod is a lot different than being in a cubicle in full leather and face plate MIG welding

duncan61 wrote:
You both referred to the lifting of the pot off the element as radiation.

duncan61 wrote:
Lifting the pot is mechanical action however the hot electric element is still radiating heat.

duncan61 wrote:
You can feel it above the element but it does not melt the top it is sitting on.

duncan61 wrote:
If you put your hand to the side there is bugger all heat.

duncan61 wrote:
My family and I have just done it while Tamara was making jam in a steel bucket.The handle on the bucket gets hot as it is all steel.She uses the bucket as it comes as a combo with the strainer and other tools for doing this task. Pacific island nation are famous for there Hungis where they make a fire and put river rocks on the fire when the fire has burned down the rocks are rolled away and a hole dug then the rocks put in the hole and whatever food is prepared and put on the rocks and the hole filled in with the hot sand. All the food is slow cooked by the heat retained in the rocks and sand.I have been to many. How does this stack up in your physics world

duncan61 wrote:
Nope. It's not radiating heat. Heat is not radiated.

It's amazing the simplicity of the things you are too stupid to learn.

Try again. What is being radiated? Hint: it is not heat.
What is the heat I can feel coming off the element or gas burner if it is not heat?

duncan61 wrote:
Relation to heat and internal energy
In thermodynamics, heat is energy transferred to or from a thermodynamic system by mechanisms other than thermodynamic work or transfer of matter.

duncan61 wrote:
[1][2][3] Heat refers to a quantity transferred between systems, not to a property of any one system, or "contained" within it.

duncan61 wrote:
[4] On the other hand, internal energy and enthalpy are properties of a single system. Heat and work depend on the way in which an energy transfer occurred, whereas internal energy is a property of the state of a system and can thus be understood without knowing how the energy got there.

duncan61 wrote:
In a statistical mechanical account of an ideal gas, in which the molecules move independently between instantaneous collisions, the internal energy is the sum total of the gas's independent particles' kinetic energies, and it is this kinetic motion that is the source and the effect of the transfer of heat across a system's boundary.

duncan61 wrote:
For a gas that does not have particle interactions except for instantaneous collisions, the term "thermal energy" is effectively synonymous with "internal energy".

duncan61 wrote:
In many statistical physics texts,

duncan61 wrote:
"thermal energy" refers to {\displaystyle kT}kT, the product of the Boltzmann constant and the absolute temperature, also written as {\displaystyle k_{\text{B}}T}{\displaystyle k_{\text{B}}T}.

duncan61 wrote:
[5][6][7][8][9] In a material, especially in condensed matter, such as a liquid or a solid, in which the constituent particles, such as molecules or ions, interact strongly with one another, the energies of such interactions contribute strongly to the internal energy of the body, but are not simply apparent in the temperature.

duncan61 wrote:
The term "thermal energy" is also applied to the energy carried by a heat flow,

duncan61 wrote:
[10] although this can also simply be called heat or quantity of heat.

duncan61 wrote:
Historical context
In an 1847 lecture titled "On Matter, Living Force, and Heat", James Prescott Joule characterised various terms that are closely related to thermal energy and heat. He identified the terms latent heat and sensible heat as forms of heat each affecting distinct physical phenomena, namely the potential and kinetic energy of particles, respectively.[11] He described latent energy as the energy of interaction in a given configuration of particles, i.e. a form of potential energy, and the sensible heat as an energy affecting temperature measured by the thermometer due to the thermal energy, which he called the living force.

duncan61 wrote:
Useless thermal energy
If the minimum temperature of a system's environment is {\displaystyle T_{\text{e}}}{\displaystyle T_{\text{e}}} and the system's entropy is {\displaystyle S}S, then a part of the system's internal energy amounting to {\displaystyle S\cdot T_{\text{e}}}{\displaystyle S\cdot T_{\text{e}}} cannot be converted into useful work. This is the difference between the internal energy and the Helmholtz free energy.
I guess this is all wrong

duncan61 wrote:
Nope. It's not radiating heat. Heat is not radiated.

It's amazing the simplicity of the things you are too stupid to learn.

Try again. What is being radiated? Hint: it is not heat.
What is the heat I can feel coming off the element or gas burner if it is not heat?

duncan61 wrote:
ITN. What is heat on your planet?
In your own words define heat.

Into the Night wrote:

duncan61 wrote:In your own words define heat.

The flow of thermal energy. Heat can be by conduction, convection, or by radiance.

duncan61 wrote:
ITN. What is heat on your planet?
In your own words define heat.

James_ wrote:

duncan61 wrote:
ITN. What is heat on your planet?
In your own words define heat.

Heat is usually the flow of electromagnetic radiation which means it is either photons or particles.
With a fire it will release highly charged ions which is plasma but is still a particle.
I just checked. All heat is electromagnetic. This is why it's either photons or particles.

duncan61 wrote:Got it