Recent content by disknoir

Thanks again for the help. You're right; I don't want to get something, only to find that it's not suitable.

Hey, thanks for the reply. First one is a bit expensive; not sure I like him tat much :P Know anything about http://www.amazon.com/gp/product/3527333053/?tag=pfamazon01-20

No suggestions? Oh well, I guess this is a physics forum after all. Biology forums it is then.

Antibiotic resistance mechanisms etc -- Book Recommendation? Hi, A friend of mine is a biomedical scientist specialising in microbiology. He's interested in antibiotics, so I'd like to buy him a book for his birthday. The trouble is, I haven't a clue what to look for. Is there any book...

What I meant to say was, why can't free space support the electric field?

When you use Faraday's law to calculate the induced electric field due to a changing magnetic flux, you integrate over a loop defined by the circuit you're interested in. Why is the electric field confined to the circuit? Couldn't I just pick a random loop in space and integrate over that...

Think about the Lorentz force on the charge carriers. The direction of v x B in the opposite sides of the loop will oppose each other so there is no current induced. Hope I understood the question correctly; I'm using the iPhone app, and I'm unable to view your pictures on my phone. :)

Hey I studying em as well. The way I understand it is that the reason these symmetrical surfaces are used is because the electric field is constant in magnitude and direction everywhere on the surface. This makes the integral trivial. Gauss' law does apply everywhere, but it is only useful in...

Hey, thanks for replying. I understand what you said, and this is basically what it says in my textbook. I'm going to go away and have a think about this while I'm at work tomorrow. I'll also try and find some kind of web applet to help me visualise it. I'll post it on here if I find a good...

In the last paragraph, it should be "so" not "do" :)

I have come back to studying physics after 5 years and I'm doing a course in electromagnetism. I've come to the wave equation and I'm a little rusty. For example, the general solution, A(z,t) = Acos(2*pi*z/L - 2*pi*f*t + phi) I know basically what the terms mean, but I'm unsure how they...

Thanks. Luckily, I have access to an academic library; I'll have a look for them.

I'm looking to learn general relativity, but I'm having a hard time. Frankly, I can't find any textbooks that I can understand. There seems to be a gap between the maths I did at uni, and the maths of general relativity. I've done vector calculus, differential equations, linear algebra and...

Hey So, I did my physics degree a while ago, and I've been missing the head hurting that theoretical physics used to cause me; I'm guess I a bit of a masochist :P As I only did special relativity at uni, I've decided to learn the general variety. Can anyone recommend any textbooks on...

When I was your age I was in the same position. I was eager to learn about these strange theories like relativity and quantum mechanics. I recommend reading a book called "The Elegant Universe" by Brian Greene. He explains the theories of Special Relativity, General Relativity and Quantum...