[QUOTE=download;39481864]I wonder where engineers are on that line[/QUOTE]
engineering isn't exactly a field of science, it's just an applied technical skill
[QUOTE=download;39481864]I wonder where engineers are on that line[/QUOTE]
[IMG]http://i.imgur.com/W9IFbsM.png[/IMG]
[QUOTE=WastedJamacan;39480422][img]http://imgs.xkcd.com/comics/purity.png[/img]
I feel obliged to post this, as a math major.[/QUOTE]
Au contraire, for Mathematics (and science) are both philosophies.
[QUOTE=Swebonny;39482119][IMG]http://i.imgur.com/W9IFbsM.png[/IMG][/QUOTE]
So they all combine to make an Engineer?
Yes he's Captain Plant
I don't know if I've posted this before.
3 particles passing 2 cylindrical electromagnetic fields. Was a Matlab project I did with a friend.
[IMG]http://i.imgur.com/2vN2CpJ.png[/IMG]
[editline]5th February 2013[/editline]
How the differential equations for movement in the x- and y-axis was derived.
r is the position vector, a1, b1, a2, b2 are the positions of the cyliners. R is the radius of the cylinder.
[IMG]http://i.imgur.com/QYRuIaV.png[/IMG]
This was the simple part. The harder part was to interpolate its exist/entry points, and to come up with an algorithm that made their exit derivatives the same, aka make them parallel.
[editline]5th February 2013[/editline]
[B]Yeah Mr White! Yeah Science!! [/B]
I can read math, but I can't seem to be able to read Swedish. :(
More with the specifics of electrical engineering than physics, but Three-Phase power systems are the coolest shit
A constant, non-sinusoidal power transfer? No current flowing through the neutral? What kind of black magic is this
[editline]5th February 2013[/editline]
If you look at your local transmission towers, you can actually see it-
[t]http://upload.wikimedia.org/wikipedia/commons/c/c8/DSCI0402.JPG[/t]
Three thick wires (each corresponding with a different phase), and an extra, thin one (the upper one in this case) for the neutral.
Now, I hear you asking, "why do you need a wire for the neutral if no current is flowing?" Well, reality is always different from theory. The power is not always perfectly transmitted, and the grounding is different everywhere. So you still need a neutral for the small current fluctuations.
[editline]5th February 2013[/editline]
[img]http://upload.wikimedia.org/wikipedia/commons/4/48/3-phase_flow.gif[/img]
That's p-cool
I'm also a physics student! I've got the fun of learning FORTRAN this semester, although I'm still not sure why they teach us basic programming using it. Common modern languages like Java kinda seem easier to intuitively understand - although admittedly Java is the only language I've learnt academically before.
And Swebonny, I'm probably missing something, but what is w in those plots? Initial velocity or something?
Java has some use for physics but rather limited compared to something like C. A lot of the department here uses Fortran so that's probably why they teach it to you.
[QUOTE=Glorbo;39482747]More with the specifics of electrical engineering than physics but Three-Phase power systems are the coolest shit
A constant, non-sinusoidal power transfer? No current flowing through the neutral? What kind of black magic is this
[editline]5th February 2013[/editline]
If you look at your local transmission towers, you can actually see it-
[t]http://upload.wikimedia.org/wikipedia/commons/c/c8/DSCI0402.JPG[/t]
Three thick wires (each corresponding with a different phase), and an extra, thin one (the upper one in this case) for the neutral.
Now, I hear you asking, "why do you need a wire for the neutral if no current is flowing?" Well, reality is always different from theory. The power is not always perfectly transmitted, and the grounding is different everywhere. So you still need a neutral for the small current fluctuations.
[editline]5th February 2013[/editline]
[img]http://upload.wikimedia.org/wikipedia/commons/4/48/3-phase_flow.gif[/img]
That's p-cool[/QUOTE]
Im going into electrical and computers engineering myself, although more on the computer side of things.
[QUOTE=Swebonny;39482335]I don't know if I've posted this before.
3 particles passing 2 cylindrical electromagnetic fields. Was a Matlab project I did with a friend.
[IMG]http://i.imgur.com/2vN2CpJ.png[/IMG]
[editline]5th February 2013[/editline]
How the differential equations for movement in the x- and y-axis was derived.
r is the position vector, a1, b1, a2, b2 are the positions of the cyliners. R is the radius of the cylinder.
[IMG]http://i.imgur.com/QYRuIaV.png[/IMG]
This was the simple part. The harder part was to interpolate its exist/entry points, and to come up with an algorithm that made their exit derivatives the same, aka make them parallel.
[editline]5th February 2013[/editline]
[B]Yeah Mr White! Yeah Science!! [/B][/QUOTE]
The part of me that was awake in computational physics lecture is crying because r is having a 3rd coordinate
[QUOTE=Yahnich;39482886]just want to pop in to say matlab is the devil
that is all[/QUOTE]
Not worse than LabVIEW.
[QUOTE=CapnScarlet2;39482889]I'm also a physics student! I've got the fun of learning FORTRAN this semester, although I'm still not sure why they teach us basic programming using it. Common modern languages like Java kinda seem easier to intuitively understand - although admittedly Java is the only language I've learnt academically before.
And Swebonny, I'm probably missing something, but what is w in those plots? Initial velocity or something?[/QUOTE]
Dude have you taken a look at the libraries that exist for FORTRAN? Especially the Intel libraries and the Nvidia CUDA implementation?
THAT's the reason why everyone still uses it.
[editline]5th February 2013[/editline]
Mathematica is #1
(in bullshit overhead and cryptic routine design)
[QUOTE=JohnnyMo1;39483008]Java has some use for physics but rather limited compared to something like C. A lot of the department here uses Fortran so that's probably why they teach it to you.[/QUOTE]
Java is a hard to learn mess.
It baffles me why any university would teach it.
[QUOTE=Killuah;39481874]I have no clue but here is Wikipedia :[/QUOTE]
We don't actually know the process of how hawking radiation occurs, just using QFT that is does just outside the event horizon. That is an analogy of how it occurs.
[QUOTE=CapnScarlet2;39482889]I'm also a physics student! I've got the fun of learning FORTRAN this semester, although I'm still not sure why they teach us basic programming using it. Common modern languages like Java kinda seem easier to intuitively understand - although admittedly Java is the only language I've learnt academically before.
And Swebonny, I'm probably missing something, but what is w in those plots? Initial velocity or something?[/QUOTE]
W is a weight factor. Nothing that important, just supposed to show how the path of the particle changes.
[QUOTE=Killuah;39483157]The part of me that was awake in computational physics lecture is crying because r is having a 3rd coordinate[/QUOTE]
What's wrong with it :v: It gets cancelled out during the cross product.
I'm hopefully going to be starting an astrophysics degree in a few months time, as long as I get my grades.
[QUOTE=Glorbo;39482747]
Three thick wires (each corresponding with a different phase), and an extra, thin one (the upper one in this case) for the neutral.
Now, I hear you asking, "why do you need a wire for the neutral if no current is flowing?" Well, reality is always different from theory. The power is not always perfectly transmitted, and the grounding is different everywhere. [b]So you still need a neutral for the small current fluctuations.[/b]
[/QUOTE]
I'm guessing you by this means that you can get for example 230V from a 400V network without using a transformator? Do you know of any resources or something that could explain how this works? I'm studying a sort-of Electrical Engineering course, and we're learning about these TN-S systems, which runs on 400V (and is three-phase, of course, like all new systems)
[QUOTE=Gulen;39484080]I'm guessing you by this means that you can get for example 230V from a 400V network without using a transformator? Do you know of any resources or something that could explain how this works? I'm studying a sort-of Electrical Engineering course, and we're learning about these TN-S systems, which runs on 400V (and is three-phase, of course, like all new systems)[/QUOTE]
No, that's not what I mean. The reason for the neutral wiring, even though in theory it's unnecessary, is because of both imperfect conditions of grounding between places and current fluctuations (from imperfect generation, or, in the extreme case, lightning bolts).
[editline]5th February 2013[/editline]
Also, transformers aren't just used for voltage reduction.
You probably already know this, but transformers that reduce voltage increase current and vice versa. This helps transferring power from the power station- Instead of running a massive current through the wires (which would require some pretty thick wires to conduct), the power station creates a massive voltage instead- When it reaches your local transformer, the transformer converts the voltage into current, and distributes that current between the various households, shops, factories and so on.
[QUOTE=Glorbo;39484467]
[editline]5th February 2013[/editline]
This helps transferring power from the power station- Instead of running a massive current through the wires (which would require some pretty thick wires to conduct), the power station creates a massive voltage instead- [/QUOTE]
Just want to add that it's mostly for efficiency, the lower the current the less energy is lost as heat in the wires. (P=I^2R)
I was so amazed in the theoretical electro dynamics lessons when we concluded that the current only flows in a very small layer at the edge of a wire, the inner rest is "useless"(well it provides the continued medium but yeah)
[editline]5th February 2013[/editline]
Also I am currently relecturing my Analysis 1 and 2 lessons for teaching purposes and holy fuck I know nothing anymore.
I can do differentials and integrals and all kinds of other analytic calculations in R^n but fuck if I know why.
[QUOTE=Killuah;39485724]I was so amazed in the theoretical electro dynamics lessons when we concluded that the current only flows in a very small layer at the edge of a wire, the inner rest is "useless"(well it provides the continued medium but yeah)
[editline]5th February 2013[/editline]
Also I am currently relecturing my Analysis 1 and 2 lessons for teaching purposes and holy fuck I know nothing anymore.
I can do differentials and integrals and all kinds of other analytic calculations in R^n but fuck if I know why.[/QUOTE]
wait, the skin effect? isn't that only AC? Unless you're talking about something else.
Ah yes. It's been 2 years now, my memory is fuzzy.
[QUOTE=chaz13;39485252]Just want to add that it's mostly for efficiency, the lower the current the less energy is lost as heat in the wires. (P=I^2R)[/QUOTE]
That's my point. You would need very large wires for your grid to be efficient if you were transferring current instead of voltage.
[QUOTE=Glorbo;39486348]That's my point. You would need very large wires for your grid to be efficient if you were transferring current instead of voltage.[/QUOTE]
Ah right, didn't think of it like that. True dat.
[QUOTE=JohnnyMo1;39478400]Pop sci books are great for getting into the subject. I think my love of physics began with reading Michio Kaku's [I]Hyperspace[/I] and [I]Parallel Worlds[/I], though I loved science in general since I was very young.
[editline]4th February 2013[/editline]
I still read some now, even though most are too untechnical for my liking. Leonard Susskind's [I]The Black Hole War[/I] is one I read in the past year, and it was very enjoyable.[/QUOTE]
Coincidentally I just ordered Hyperspace today.
Just hope it isn't too similar to "Physics of the impossible".
I shouldn't get theoretical physicists to solve practical physical problems should I?
[t]http://media.cheggcdn.com/media/b0f/b0fa0cd3-5335-4226-afbe-213e826e3840/phpoTh1nB.png[/t]
[QUOTE=booster;39489104]Coincidentally I just ordered Hyperspace today.
Just hope it isn't too similar to "Physics of the impossible".[/QUOTE]
It's not. Hyperspace and Parallel Worlds are fairly similar (but both worth reading) but Physics of the Impossible is quite different from both of them.
[editline]5th February 2013[/editline]
[QUOTE=Angus725;39489124]I shouldn't get theoretical physicists to solve practical physical problems should I?
[t]http://media.cheggcdn.com/media/b0f/b0fa0cd3-5335-4226-afbe-213e826e3840/phpoTh1nB.png[/t][/QUOTE]
gross way too many numbers I wanna vomit
[QUOTE=Angus725;39489124]I shouldn't get theoretical physicists to solve practical physical problems should I?
[t]http://media.cheggcdn.com/media/b0f/b0fa0cd3-5335-4226-afbe-213e826e3840/phpoTh1nB.png[/t][/QUOTE]
There are much better ways to notate that
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