Recent content by arron

thank you malawi, I've got it. But still need some more explanation. In our textbook, I was told that, nomatter what kinds of materials the blackbody is composed with, it will radiates the same if the temperature is the same. and as I know, it is for that the electron transits between different...

Is that for I haven't clarified my question enough? As we know, it is the electron transiting from high energy level to low energy level which results the photon emiting. Tungsten filament lamp can radiate continuous spectrum, but for discharge lamp, its spectrum is discretely distributed. What...

I am reading the book about the light resource, and I can not understand that why hot gas radiates E-M waves of discrete frequency, but hot solid radiates continuous waves. As you know, high intensity gas discharging lamps give out discrete spectrums, but tungsten resistance lamps give out...

I still have something uncertain about this, and I think for this question better not use photon for instance. Discussing it with mechanical waves and classical E-M waves would be more approprite. If two waves meet together, would they be completely neutralized if their phases are opposite? And...

thanks Thanks everyone, I am so apprecited. I am trying to understand you and make it clear. There is still a question that I found it could be used everywhere, even in Maxwell distribution equations which belongs to caloricics. Can you explain why it has so many usage?

e=(1/n+1)^n,as n->00, though I have used this symbol for so many times, but I still can not understand the true meaning of it. Why does it has such strange characteristic---d(e^x)/dx=e^x, and e^x=1+x,as x->0, and why is it able to be used everywhere? who can explan this symbol to me?

But i think the force has already been neutralized. you see , if an electron is far from other charges, it does not move itself. why? you can think that the force act on the electron itself on opposite directions has already neutralize each other. and i think the most important thing to accept...

haha oh i know ,thank you Zapperz.though there's still something unclear, can you tell me how can I make it more clear? ... and the synchrotron facility you referred ,how does it work? orbits in uniform and stable B field and then be kept by E field? so the facility is difficult to...

marlon,when the electron orbits in the magnetic field, it also accelerates i think.is there any difference between these two movements? and the question will it fall?

thank you marlon, but ...what you said is what i am learning now. i am afraid i can not accept the ultimite truth with something uncetain in my mind. simply to say, if one body orbits another body, and they all carry charges(but they carry the opposite), will this system emits and ruins?

thank you Nesk, and then the second question? when it orbits in the magnetic field, will it fall?

thank you Danger Danger you are right. thank you . but that hasn't resolve my puzzle, :cry: maybe i not good at expression, but it's not an orbit mechanics question really . even it's not a real question that exists, i think.:cry::cry: before the the birth of quantum mechanics, we use...

I have a question about the electrons in atoms. This question is from quantum mechanics, but it is really a situation of classical electrodynamics. When the electron goes around the nucleus, it is said that the electron will emit electromagnetic wave and then fall to the nucleus. But in fact all...