“Short” or “Open” Circuits
October 23rd, 2008Don’t you hate it when you think you are getting something and then you discover you aren’t? That happened to me in school today. Things were going along swell when suddenly one of my brain cells imploded or something (perhaps it short-circuited) and nothing made sense any more. What I thought was one thing suddenly seemed to be something else. Now my job for tonight is to try to figure (or re-figure) things out. ~sigh~
Here’s the problem… there are serial (or simple) circuits. Easy enough. Then their are parallel circuits. A bit more complicated, but manageable. Then their are serial-parallel circuits that are a combination of both serial and parallel circuits. A bit more complicated but I’ve got a handle on them. Unfortunately we don’t like in a perfect world so sometimes things go wrong with these circuits.
So let’s introduce the “shorted” or “open” resistor in a circuit. Now what happens? In my past life (was it really just 2 1/2 weeks ago?) I would have said, “You buy a new one or call someone to fix it.”
In this new life, I now have to perform a gazillion math calculations to answer that question. I have to honor Ohm’s Law as well as Kerchoff’s Law. What about Donna’s Law? You know… the one that says “If it’s broke, get Gerry to fix it?”
Yeah, so tonight I’m going to have to try to sort all this stuff out in my head. I’m not looking forward to it. I’m not worried about figuring it out, I would just rather not spend a Thursday night doing it. Doesn’t my teacher realize that Survivor is on tonight? Yeah… I’ll just have to record it like I do each week.
Okay, enough whining about subject matter at school…
Today was pizza day. I told the class that I’d buy pizza for everyone today. When they started to resist my gracious offer (I really was being gracious about it), I told them they would lose *brownie* points with me if they didn’t eat a slice. One airman still said he didn’t want a slice (but I could tell that he did!), so I told him he had trash duty next week if he didn’t eat pizza with us. ha ha I love having power!!!
The pizza was pretty good, but I really believe, deep in my heart… that if you’re going to eat pizza at 9 o’clock in the morning, it should be cold pizza. But hey, I am in the south… perhaps they just do things differently here.
Because I ate pizza at 9 a.m. I came back to my room to watch *America’s Next Top Model* at lunchtime. I also ate 3 cookies. Oops. Let’s just call them dessert.
After school I went running for 30 minutes… in the rain… it was still pretty warm out and felt good. Now I’m settled into my room for the night and avoiding my textbook for as long as I can. I did plan to call my mother today to check in so I think I’ll still do that after I finish this entry.
Other than that, there isn’t much to report.
How are you doing?
Hugs,
–Donna




