Recent content by ronaldoshaky

You know it's funny, that happens me a lot. I wouldn't say I was the most bright student of Physics, but I just keep at it. Eventually the penny drops. Hey, if Physics was easy then everybody would be doing it! Oh yea, the secret to doing problems in Phys....read read read and read the textbook...

Thats an interesting article.

Homework Statement the frequency squared is 106.01 k^2 Hz^2. The percentage error is 10 %. How do you quote the quantity Homework Equations I said (106.0 +/- 10.6) k^2 Hz^2 My question is rounding to (106 +/- 11) k^2 Hz^2 wrong? 11 k^2 Hz^2 seems to be more than 10 per cent. Thanks The...

I did an experiment with Indium antimonide (InSb) in Liquid Nitrogen. I turned the sample one way in the B field and took a reading of the voltage (positive) and turned it 180 degrees and took a reading of voltage (positive, and a greater value). I use V_h = v1 - v2 / 2 and I get negative values...

Hello. I recently did a Hall effect experiment with InSb. I did it in two parts. The first with the sample at room temperature and the second immersed in liquid nitrogen. I need some help understanding my results. I used the fomula v_h = (v_1 - v_2) / 2 to work out the Hall voltage (v_h). v_1...

Hello to all I recently completed an experiment trying to find the critical temperature of a bismuth based ceramic material. I cooled the sample using liquid nitrogen. I have attached my results in an excel file, where I had to plot the sample voltage (Vs) against thermocouple voltage(Vt). My...

There is no resistance, so currents will flow indefinitely. The cause is lowering the superconductor below its critical temperature (T_c). Usually liquid helium or nitrogen is used to cool a superconductor below T_c.

Do you think its possible... to find a superconductor that will have a critical temperature above room temperature?

Thanks for the direct. I have another q. How does gravity warp spacetime? Space is a vacuum, right? Does gravity manipulate a vacuum?

Why does gravitational lensing occur if photons are massless?

My reason for asking was, well, I already have learned to program in Java. But I was doing a course in shell scripting with Unix, and I found that when I left Java for a while and then went back to programming in Java I found it difficult to get back into thinking in Java. I don't want to start...

Hello to all I've been wondering about the skills needed for doing a research degree. I've been looking at the Matlab language recently and it seems somewhat similar to Java. Is Java just as easy to use as Matlab for doing numerical methods? I'd be interested in hearing your views. Thank you...

man why do i feel like this when I study quantum physics. like what the hell is the square of the orbital angular momentum anyway...how do you visualise it.

Are you for real? How can you spend that amount of time and then hate it.

I was stuck on a peturbation theory question the other day. stuck on the bloody integration. i thought physics was frustrating then. but i stuck at it and solved the problem. maybe you just need a better tutor