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How old is your grandson?
Heat may be defined as energy that is in transit due to temperature differences between the source from which the energy is coming to the surrounding environment to which it is going. It is non-mechanical energy in transit directly linked to differences in temperatures between a system and its surroundings. It is because of this transference of energy that heat is better sometimes better described as "heat transfer" rather than "heat".
The "non-mechanical energy" part is important as mechanical energy in transit is called Work.
Temperature may be defined as a measurement of the average kinetic energy of the molecules in an object as a result of the thermal agitation of the molecules. This measurement is expressed as units assigned a value on a scale. It is a measure of hotness and coldness of a object and the temperature of an object determines the direction of heat flow - heat always flows from a hotter system to a cooler system until both are at equilibrium.
In essence, heat is a measure of the total amount of thermal energy in a body, whereas temperature is a measure of the average energy of the molecules of a body.
Heat may be defined as energy that is in transit due to temperature differences between the source from which the energy is coming to the surrounding environment to which it is going. It is non-mechanical energy in transit directly linked to differences in temperatures between a system and its surroundings. It is because of this transference of energy that heat is better sometimes better described as "heat transfer" rather than "heat".
The "non-mechanical energy" part is important as mechanical energy in transit is called Work.
Temperature may be defined as a measurement of the average kinetic energy of the molecules in an object as a result of the thermal agitation of the molecules. This measurement is expressed as units assigned a value on a scale. It is a measure of hotness and coldness of a object and the temperature of an object determines the direction of heat flow - heat always flows from a hotter system to a cooler system until both are at equilibrium.
In essence, heat is a measure of the total amount of thermal energy in a body, whereas temperature is a measure of the average energy of the molecules of a body.
Well Joeloki, I'm sitting here racking my brains trying to decide what you mean by the second sentence of your post. Would you mind clarifying the sentence for us?
In the meantime, thanks for extracting part of my own post and summarising it although plagiarism was not really necessary. I should point out though that temperature can also be a measure of the coldness of an object.
In the meantime, thanks for extracting part of my own post and summarising it although plagiarism was not really necessary. I should point out though that temperature can also be a measure of the coldness of an object.
In response to 'the prof'.
I must point out that I was responding to the questioner, not to you. It is unfortunate that you find it necessary to be offensive - there is really no need! Perhaps if you knew more of thermodynamics you would have understood my meaning. You may be assured that I have no need of plagiarism: I presume that you don't have the sole right of access to physical laws?
I must point out that I was responding to the questioner, not to you. It is unfortunate that you find it necessary to be offensive - there is really no need! Perhaps if you knew more of thermodynamics you would have understood my meaning. You may be assured that I have no need of plagiarism: I presume that you don't have the sole right of access to physical laws?
-- answer removed --
Well joeloki, I'm sure you'll humour me if I point out a few things too.
1. I'd like you to note that the first post I made on this thread asked for the age of reward4615's grandson.
2. I'd like you to note that I am a university professor with some experience of teaching children from primary school age to the age they obtain their PhD�s (we�re all someone's children no matter what age we are)
3. I have a couple of rules when it comes to answering questions on AB. Firstly, I try to estimate the age of the questioner and secondly, I try not to venture into scientific realms which the questioner is unlikely to have knowledge of either because they have not studied that subject themselves or they have insufficient knowledge of it. I well appreciate that not everyone on AB is a scientist and there is often the need for the KISS principle. If someone asks for more detail, I provide it.
Now that I've made that clear, let's discuss your post.
(continued)
1. I'd like you to note that the first post I made on this thread asked for the age of reward4615's grandson.
2. I'd like you to note that I am a university professor with some experience of teaching children from primary school age to the age they obtain their PhD�s (we�re all someone's children no matter what age we are)
3. I have a couple of rules when it comes to answering questions on AB. Firstly, I try to estimate the age of the questioner and secondly, I try not to venture into scientific realms which the questioner is unlikely to have knowledge of either because they have not studied that subject themselves or they have insufficient knowledge of it. I well appreciate that not everyone on AB is a scientist and there is often the need for the KISS principle. If someone asks for more detail, I provide it.
Now that I've made that clear, let's discuss your post.
(continued)
I�m usually reasonably accurate when it comes to estimating the age of a questioner. It�s largely based on the way a question is phrased. In this case, it was obvious to me that reward4615�s grandson was still at school. I trust you would agree with that conclusion.
Now I�m fairly familiar with the stages at which children learn scientific concepts at school and I would estimate, in the absence of better knowledge, that the grandson was somewhere between the final year in a primary school and the first couple of years in comprehensive school (or equivalent).
Now, I trust you will be prepared to admit that this granddad was looking for the answer to a homework question for his grandson. He said as much after all.
I have to tell you that the answer you provided would not have earned the grandson many marks at school no matter which year he was in. Basically, you provided three sentences in reply to the question, which I can assure you would not have been enough.
(continued)
Now I�m fairly familiar with the stages at which children learn scientific concepts at school and I would estimate, in the absence of better knowledge, that the grandson was somewhere between the final year in a primary school and the first couple of years in comprehensive school (or equivalent).
Now, I trust you will be prepared to admit that this granddad was looking for the answer to a homework question for his grandson. He said as much after all.
I have to tell you that the answer you provided would not have earned the grandson many marks at school no matter which year he was in. Basically, you provided three sentences in reply to the question, which I can assure you would not have been enough.
(continued)
Let�s look at your reply. Your second sentence reads: �Note the importance of the word 'transfer' for heat is not, of itself, energy�. Now, the only reason I sat racking my brains was because I could not understand the point you were making. You see Joeloki, that sentence may be interpreted in more than one way and some might say it was nonsensical. Now I�m sure you will admit that in hindsight, you could have made the point clearer. At the end of the day, the science may have been correct but the sentence grammar lacked some refinement and was subject to misinterpretation. What would have happened had the lad copied your answer verbatim for submission to his teacher? How many marks would you have given him?
(continued)
(continued)
With regard to offensiveness, I�m sorry if you�ve misread my mood in replying. I did after all, ask you politely to clarify the sentence concerned, although I admit I did not ask �please�. I never intended to be offensive. You obviously seem to attribute my attitude to lack of knowledge of thermodynamics. Sorry, but thermodynamics didn�t come into it - it was solely down to the ambiguous reply that you made due to the poor sentence construction. Incidentally, I�ve got a reasonably good knowledge of thermodynamics as I use the principles quite often in my own field of expertise � biochemistry.
As far as plagiarism goes, you�ll note I did not accuse you of lifting parts of my answer out and repeating them verbatim. However, you have attempted to summarise part of my post whether you have sourced the information from there or elsewhere as you now imply. You only posted three sentences, the first bearing what seems to be an intentional slight similarity to the first sentence of my first paragraph, the second ambiguous sentence and a third, which was not strictly correct as I pointed out earlier. Incidentally, I omitted to point out in my last post that heat is not �the name given to the transfer of energy due to a temperature difference� as you claim. Heat is the name given to the energy itself that is in transit - heat is the energy not the process. No marks would have been given for your final sentence.
Finally, you�ve provided me with another ambiguity regarding the words �physical laws�. To what are you referring? Anyway, regardless of your intended meaning, I don�t claim to have the �sole rights of access� to them whatever they are. The Internet has provided everyone with the means to glean information no matter what their background knowledge or even their ability to understand what they are reading. It follows that its only fair that everyone is free to post on AB.
As far as plagiarism goes, you�ll note I did not accuse you of lifting parts of my answer out and repeating them verbatim. However, you have attempted to summarise part of my post whether you have sourced the information from there or elsewhere as you now imply. You only posted three sentences, the first bearing what seems to be an intentional slight similarity to the first sentence of my first paragraph, the second ambiguous sentence and a third, which was not strictly correct as I pointed out earlier. Incidentally, I omitted to point out in my last post that heat is not �the name given to the transfer of energy due to a temperature difference� as you claim. Heat is the name given to the energy itself that is in transit - heat is the energy not the process. No marks would have been given for your final sentence.
Finally, you�ve provided me with another ambiguity regarding the words �physical laws�. To what are you referring? Anyway, regardless of your intended meaning, I don�t claim to have the �sole rights of access� to them whatever they are. The Internet has provided everyone with the means to glean information no matter what their background knowledge or even their ability to understand what they are reading. It follows that its only fair that everyone is free to post on AB.
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