Wednesday, February 13, 2008
Monday, February 11, 2008
h
h is called the heat transfer coefficient. It is an interesting little thing that differs between the materials you are using. It partly depends on the velocity the substance is moving at or the air is moving towards the substance at. Also, it depends on geometry and sometimes temperature.
There is no specific way of finding the heat transfer coefficient of something. It is usually found by doing experiments. One of my roommates is working in a lab that is looking for the heat transfer coefficients of various substances. She is excited that I am learning about it.
h is used in as equation for finding the heat transfer of a convection process.
Q is usually written with a dot over it, but it is difficult to do so in a post. It is the heat transferred per time. A is the surface area of the substance that is exposed to the convection. dT is the change in temperature of the substance, from its initial temperature to its final temperature after losing or gaining heat. "Change" in something is expressed by the Greek letter delta, but there are no delta's on my keyboard, so I used a "d". It is not quite the same, but similar.
Now I must return to my studying. My exam is tomorrow, so 'tis imperative that I understand these concepts.
There is no specific way of finding the heat transfer coefficient of something. It is usually found by doing experiments. One of my roommates is working in a lab that is looking for the heat transfer coefficients of various substances. She is excited that I am learning about it.
h is used in as equation for finding the heat transfer of a convection process.
Q = hAdT
Q is usually written with a dot over it, but it is difficult to do so in a post. It is the heat transferred per time. A is the surface area of the substance that is exposed to the convection. dT is the change in temperature of the substance, from its initial temperature to its final temperature after losing or gaining heat. "Change" in something is expressed by the Greek letter delta, but there are no delta's on my keyboard, so I used a "d". It is not quite the same, but similar.
Now I must return to my studying. My exam is tomorrow, so 'tis imperative that I understand these concepts.
Thursday, January 31, 2008
Shall I write a nothing post on the day of my twentieth birthday?
This is nothing.
It is not even worth the time I am spending writing it nor the time you are spending reading it.
But I am enjoying writing it anyways because writing nothing is more fun than writing something.
Especially when the something is technical or difficult or analytical and due soon.
Fortunately for me, I do not have anything of the sort due until next week.
In the meantime, I shall write nothing.
Perhaps you wish to know what I got for my birthday?
Well, probably you don't, but I'm going to tell you anyways.
I got a nice framed picture, two boxes of Thin Wheats (a cheap generic brand of crackers similar to Wheat Thins), and a small jar of cumin.
I am a Thin Wheat addict, I am sorry to say. No other cracker has just the right taste.
My roommates know this, in fact one of them shares my addiction, so they knew exactly what I would appreciate most.
The cumin was a spice that was horribly missing from our pantry. But now that has been remedied. I believe cumin is a must for any cook or pantry.
It is not even worth the time I am spending writing it nor the time you are spending reading it.
But I am enjoying writing it anyways because writing nothing is more fun than writing something.
Especially when the something is technical or difficult or analytical and due soon.
Fortunately for me, I do not have anything of the sort due until next week.
In the meantime, I shall write nothing.
Perhaps you wish to know what I got for my birthday?
Well, probably you don't, but I'm going to tell you anyways.
I got a nice framed picture, two boxes of Thin Wheats (a cheap generic brand of crackers similar to Wheat Thins), and a small jar of cumin.
I am a Thin Wheat addict, I am sorry to say. No other cracker has just the right taste.
My roommates know this, in fact one of them shares my addiction, so they knew exactly what I would appreciate most.
The cumin was a spice that was horribly missing from our pantry. But now that has been remedied. I believe cumin is a must for any cook or pantry.
Sunday, January 20, 2008
Thermal
I have the most lovely equation from my Thermal and Fluids class.
Now perhaps you are wondering what on earth all those letters stand for?
Here are their definitions:
KE = Kinetic energy. This is the energy in something that is moving.
PE = Potential energy. This is the energy of something that has the potential to be moving.
U = Internal energy. This is the energy inside the system you have designated. It is a bunch of different things really. But I am still just learning what they all are. (which means, I don't totally understand it all myself, and I am just typing away quickly without looking up in my textbook for exact definitions)
Q = Heat transferred, I think. I can't exactly remember this one, but it does have to do with the heat that enters a system or leaves a system.
W = Work. This is work done by the system or done on the system.
I have mentioned "system" several times in my definitions. A system can be anything. Usually, we take a large complicated thing like a motor and we can call the whole thing a system, or we can break it into smaller parts and call each of those systems and so on. It depends on what you are trying to find and what choice of a system makes it easiest to find those things.
KE + PE + U = Q - W
Now perhaps you are wondering what on earth all those letters stand for?
Here are their definitions:
KE = Kinetic energy. This is the energy in something that is moving.
PE = Potential energy. This is the energy of something that has the potential to be moving.
U = Internal energy. This is the energy inside the system you have designated. It is a bunch of different things really. But I am still just learning what they all are. (which means, I don't totally understand it all myself, and I am just typing away quickly without looking up in my textbook for exact definitions)
Q = Heat transferred, I think. I can't exactly remember this one, but it does have to do with the heat that enters a system or leaves a system.
W = Work. This is work done by the system or done on the system.
I have mentioned "system" several times in my definitions. A system can be anything. Usually, we take a large complicated thing like a motor and we can call the whole thing a system, or we can break it into smaller parts and call each of those systems and so on. It depends on what you are trying to find and what choice of a system makes it easiest to find those things.
Thursday, December 13, 2007
Thursday, December 06, 2007
Soooup of the Eeeevening
Beauuutiful sooooup!
(and biscuits too)
I made a delicious smelling soup for dinner tonight. I hope it tastes as good as it has been smelling.
I took out frozen chicken pieces from our freezer at ten this morning. Then I let them thaw a little while I finely chopped onions, peeled potatoes, and carrots. At eleven, I put the chicken into a large soup pot and turned the heat on. I poured a wee bit of oil in to keep the chicken from sticking too much. After all sides were nicely cooked (the inside was still pink, however) I turned the heat off.
Then I pulled out a glass measuring cup, the kind that measures two cups at once and all in-between on the sides, except I think this one only holds one cup. Oh yes, it is called a liquid measuring cup. But I put flour in it first. Then I slowly dribbled a little water in and stirred it. I continued to do so, adding only a little water at a time. Soon I had a thick sauce. I poured this over my chicken in the pot.
Next, I sprinkled in a lot of different spices and seasonings: Bell's seasoning, parsley flakes, dried basil, dried oregano, a pinch of ground pepper, and some garlic powder. Then I threw in the vegetables I had cut up previously. I filled my liquid measuring cup up with hot water and slowly added it to the pot while stirring the mixture inside. I continued to add water until I thought the soup was high enough and soup-like enough.
It has been simmering on and off all afternoon.
I will be serving it soon with biscuits.
(and biscuits too)
I made a delicious smelling soup for dinner tonight. I hope it tastes as good as it has been smelling.
I took out frozen chicken pieces from our freezer at ten this morning. Then I let them thaw a little while I finely chopped onions, peeled potatoes, and carrots. At eleven, I put the chicken into a large soup pot and turned the heat on. I poured a wee bit of oil in to keep the chicken from sticking too much. After all sides were nicely cooked (the inside was still pink, however) I turned the heat off.
Then I pulled out a glass measuring cup, the kind that measures two cups at once and all in-between on the sides, except I think this one only holds one cup. Oh yes, it is called a liquid measuring cup. But I put flour in it first. Then I slowly dribbled a little water in and stirred it. I continued to do so, adding only a little water at a time. Soon I had a thick sauce. I poured this over my chicken in the pot.
Next, I sprinkled in a lot of different spices and seasonings: Bell's seasoning, parsley flakes, dried basil, dried oregano, a pinch of ground pepper, and some garlic powder. Then I threw in the vegetables I had cut up previously. I filled my liquid measuring cup up with hot water and slowly added it to the pot while stirring the mixture inside. I continued to add water until I thought the soup was high enough and soup-like enough.
It has been simmering on and off all afternoon.
I will be serving it soon with biscuits.
I need a new topic
Hurrah for rabbits and foxes!
They make such nice predator-prey equations that we can solve using various differential equation methods.
They tell us that the foxes eat the rabbits so the rabbit population decreases.
But when there are no rabbits, the fox population decreases.
So the foxes decrease exponentially and the rabbits increase exponentially and they form a cyclical graph.
And that was the end of my class. There are no more differential equations for this semester.
They make such nice predator-prey equations that we can solve using various differential equation methods.
They tell us that the foxes eat the rabbits so the rabbit population decreases.
But when there are no rabbits, the fox population decreases.
So the foxes decrease exponentially and the rabbits increase exponentially and they form a cyclical graph.
And that was the end of my class. There are no more differential equations for this semester.
Wind Near My Ear
You see,
To me,
To be
A bear
With hair
Covering me
Sounds heavenly
Especially
When I hear
Wind near
My ear.
To me,
To be
A bear
With hair
Covering me
Sounds heavenly
Especially
When I hear
Wind near
My ear.
Wednesday, October 31, 2007
The Quote of Wednesday
This quote of Wednesday is brought to you by my differential equations professor concerning the achievements of great mathematicians in history.
"We could probably call them the heroes of civilization."
Monday, October 22, 2007
Sleep
Jo wants to sleep. I know this because she has told me so several times already this evening and suggested it as a topic for a post when I asked her for one.
I think she wants to sleep because she went to bed after twelve last night and had to wake at six-thirty.
Sleep is an important thing to talk about anyway. As a college student, I see the consequences of the lack thereof far too clearly. Too many friends think they can get by with very little sleep. They even pray that they will be able to function on less sleep so they can get everything done that they need to. I have a solution to that problem that does not involve less sleep. Do less. Really, that is what most of them need to hear (and follow).
I was telling my dad that I felt all my days and evenings were spent studying and when I was finally done, I stayed up late so I could get a little bit of fun stuff in. But I felt I had to cut into my sleep to do all this. He said it was similar to make a financial budget. After budgeting everything you think of some fun things you'd like to do as well. So you look to see where you can fit it in. You can't so you say, "Well, I suppose we could not eat..."
It puts a different perspective on things.
Another thing is that not sleeping is a form of pride. If you are not sleeping, you are not admitting that God made you human with a need to sleep. You are trying to be like God who does not sleep. So that is not a good thing either.
If you don't get sleep, you are more liable to get sick as my friend who slept only one hour a week ago did. She is dropping all sorts of things and not doing too well and she isn't getting the sleep she needs. At least, she wasn't. I believe she has realized her need for sleep after getting sick. But it is best to not get sick to realize such a thing.
Another thing that happens if you do not get enough sleep is that you fall asleep in classes. That is not always the best thing especially if you are having trouble understanding the content anyways or if you have been trying to impress the professor with your wide-awake awareness during class.
Anyway, I must work on some homework now while it is still fairly early in the evening. Then I can get some much needed sleep.
I think she wants to sleep because she went to bed after twelve last night and had to wake at six-thirty.
Sleep is an important thing to talk about anyway. As a college student, I see the consequences of the lack thereof far too clearly. Too many friends think they can get by with very little sleep. They even pray that they will be able to function on less sleep so they can get everything done that they need to. I have a solution to that problem that does not involve less sleep. Do less. Really, that is what most of them need to hear (and follow).
I was telling my dad that I felt all my days and evenings were spent studying and when I was finally done, I stayed up late so I could get a little bit of fun stuff in. But I felt I had to cut into my sleep to do all this. He said it was similar to make a financial budget. After budgeting everything you think of some fun things you'd like to do as well. So you look to see where you can fit it in. You can't so you say, "Well, I suppose we could not eat..."
It puts a different perspective on things.
Another thing is that not sleeping is a form of pride. If you are not sleeping, you are not admitting that God made you human with a need to sleep. You are trying to be like God who does not sleep. So that is not a good thing either.
If you don't get sleep, you are more liable to get sick as my friend who slept only one hour a week ago did. She is dropping all sorts of things and not doing too well and she isn't getting the sleep she needs. At least, she wasn't. I believe she has realized her need for sleep after getting sick. But it is best to not get sick to realize such a thing.
Another thing that happens if you do not get enough sleep is that you fall asleep in classes. That is not always the best thing especially if you are having trouble understanding the content anyways or if you have been trying to impress the professor with your wide-awake awareness during class.
Anyway, I must work on some homework now while it is still fairly early in the evening. Then I can get some much needed sleep.
Saturday, October 20, 2007
A nothing post
That's right! Another nothing post!
My brain is slightly sleepy, but I feel like writing something.
So, of course, that means a nothing post is in order.
Now nothing posts tend to pick up some sort of topic of their own, but I really can't think of any at the moment. I suppose I'll just keep typing and see what sort of topic it takes on.
It is sunny today. It makes me happy. I can look out my window and see the sun shining on the yellow and green leaves of the trees right outside. It is a pleasant sight. It makes me wish I had no homework but could instead go to a park and sit and think or doze or read a good book. Maybe take a short hike and play frisbee with some friends. But not at the moment.
At the moment, I must begin my homework for differential equations and strength of materials. I have not yet begun them today because I attended a Bible study this morning. But it is after lunch now, so I must start work. Later, perhaps, I shall go to Salvation Army with some roommates. One of my roommates must find an ugly shirt for "ugly shirt day" at her work. The Salvation Army is an excellent place to find ugly things (and some nice things, but those you have to look a little harder for generally).
So this is the end of the nothing post.
Unfortunately, it is not as interesting as my other nothing posts. I guess I am not in quite the right frame of mind to right a really good nothing post. That requires a certain deadness of the brain which is not quite dead. Then what comes through is that peculiar kind of writing good for nothing posts. I can't quite explain what I mean because I am sleepy, but I suppose if you read other nothing posts, you would get it.
My brain is slightly sleepy, but I feel like writing something.
So, of course, that means a nothing post is in order.
Now nothing posts tend to pick up some sort of topic of their own, but I really can't think of any at the moment. I suppose I'll just keep typing and see what sort of topic it takes on.
It is sunny today. It makes me happy. I can look out my window and see the sun shining on the yellow and green leaves of the trees right outside. It is a pleasant sight. It makes me wish I had no homework but could instead go to a park and sit and think or doze or read a good book. Maybe take a short hike and play frisbee with some friends. But not at the moment.
At the moment, I must begin my homework for differential equations and strength of materials. I have not yet begun them today because I attended a Bible study this morning. But it is after lunch now, so I must start work. Later, perhaps, I shall go to Salvation Army with some roommates. One of my roommates must find an ugly shirt for "ugly shirt day" at her work. The Salvation Army is an excellent place to find ugly things (and some nice things, but those you have to look a little harder for generally).
So this is the end of the nothing post.
Unfortunately, it is not as interesting as my other nothing posts. I guess I am not in quite the right frame of mind to right a really good nothing post. That requires a certain deadness of the brain which is not quite dead. Then what comes through is that peculiar kind of writing good for nothing posts. I can't quite explain what I mean because I am sleepy, but I suppose if you read other nothing posts, you would get it.
Wednesday, October 03, 2007
Friday, September 28, 2007
Friday stuff
I have successfully completed my first calculus exam. I hope I did better on it than I feel.
Anyway, here is a quote from my Biology book:
So, i don't know why I had to post that. Kirk told me I did because i read it to her from my Biology book and she thought it was funny or something.
I don't have any Friday Vocabulary today. But maybe I will next week.
Anyway, here is a quote from my Biology book:
Culture is the sum of a social group's behavioral patterns, passed on through the generations by learning and symbolic behavior.
Biology - The Unity and Diversity of Life
eleventh edition page 452
So, i don't know why I had to post that. Kirk told me I did because i read it to her from my Biology book and she thought it was funny or something.
I don't have any Friday Vocabulary today. But maybe I will next week.
Wednesday, September 19, 2007
The Quote of Wednesday
Oh my goodness! I just remembered today was Wednesday and I had to post my quote for today!
Except, I don't have a quote for today.
Hang on, I will find one...
Okay, I walked into the kitchen and saw this written on our white board:
Actually, we chopped up the zucchini last night, so it is no longer ponderable, but before we did, we named it Zeke. Zeke was the largest zucchini we had ever seen and was one of the first out of Melanie & Laura's family's garden (roommates of mine). Zeke will taste good in zucchini bread.
Except, I don't have a quote for today.
Hang on, I will find one...
Okay, I walked into the kitchen and saw this written on our white board:
Ponder the zucchini.
Actually, we chopped up the zucchini last night, so it is no longer ponderable, but before we did, we named it Zeke. Zeke was the largest zucchini we had ever seen and was one of the first out of Melanie & Laura's family's garden (roommates of mine). Zeke will taste good in zucchini bread.
Bicycles
Have you ever ridden a bicycle? I have. It is a great deal of fun, but I wish the tires on my bike were in better condition. I have not ridden all year because of the state they are in.
And also because I have not been at home very much.
This is a picture of a wall of bicycles from the New York State Museum. I think it would be fun to have a bicycle with a great large wheel like the one on the left hand side of the picture. It would interesting to ride.
Monday, September 17, 2007
Look! It is one of those nothing posts I am so good at. See, I think there ought to be some sort of interesting post associated with this interesting picture of a large pottery pitcher from the New York State Museum. But I can't think of one. 'Tis most unfortunate, but true.
Maybe I will post this picture again later when I can think of something to go with it.
Tuesday, September 11, 2007
Saturday, September 08, 2007
Physics Equation of Saturday
So here is the first physics equations of whatever day I happen to get around to posting it, which happens to be Saturday. And the physics equation I chose for today is one that shows the relationship between the charge and the potential difference of a capacitor.
A capacitor is formed of any two conducting objects next to each other. When it is charged (has electricity flowing through it), each object has a charge of the same magnitude, but different signs (+ or - signs). The electricity flows from the + charged object to the - charged object and energy is stored in it.
So the equation is:
q = CV
q is the charge of each object.
V is the potential difference between the two objects. It has to do with the energy.
C is the capacitance of the capacitor (or the measure of the charge needed to produce a certain potential difference)
And that is all I am going to say about this seeing as how I now need to go solve problems using this equation for homework.
Thursday, August 30, 2007
Jo is absent
She has many things to do. She has started college and is now appreciating all the walking around and around from class to class and the studying and the backpack pulling on your shoulders.
But she isn't in Differential Equations, so she can't be having as much fun as I am. Differential equations are fun and exciting and my professor even calls them beautiful, which I must say I agree with. I feel so sorry for Jo that she is missing this. But at least she is taking calculus 1 which is almost as fun.
I do not expect her to post much more than she already does. In fact she will probably post even less. So I guess I will have to post for her.
UPDATE: Instead of Friday vocabulary, I think I will do the "Physics Equation of Whatever Day I Get Around to Posting It On". That should be a good change.
But she isn't in Differential Equations, so she can't be having as much fun as I am. Differential equations are fun and exciting and my professor even calls them beautiful, which I must say I agree with. I feel so sorry for Jo that she is missing this. But at least she is taking calculus 1 which is almost as fun.
I do not expect her to post much more than she already does. In fact she will probably post even less. So I guess I will have to post for her.
UPDATE: Instead of Friday vocabulary, I think I will do the "Physics Equation of Whatever Day I Get Around to Posting It On". That should be a good change.
Tuesday, August 07, 2007
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