Recent content by ZeroGravity

I can see that you would want to minimize the resistance, but why the selfinductance?, and how?

How would you convince youself that the magnetic energy is decreasing as the area is increasing? Calculating the volume integral og the magnetic flux density seems cumbersome...Any suggestions? Should the self inductance not decrease as the area is increased? in order for the magnetic energy to...

Can you give any mathematical support for your statement? I would like to get the same result from the lorentz force as for the relation F=0.5*L'*I^2 ...i.e. the derivative of the magnetic energy... Bur the magnetic energy should diminish right?

But why is it energetically favorable for the system to increase the area?

Hi forum Can anyone explain where the energy is ... Consider a railigun, a voltage is put across the two parallel rails, a current starts building up, whille some energy is stored in the magnetic field inside the current loop. The energy stored in the magnetic field is: U=0.5*L*I^2 I being...

Hi Forum I am trying to get a better grasp of the relation between electric field and the magnetic field. The overall question is "What is The origin of selfinductance in a current loop?" Here are my thourghts: A battery is connected to a say circular wire with some resistance. The current...

Thanks for your reply...but no that is not the one...

Hi I remember reading an article some years back (5?) on a description of energy categorized into either potential or kinetic energy. I think it was an article in "The physics teacher" but can't find it... Anyone remember it? Martin

I do not see errors in the atomic mass unit, but I found a value of 1 u = 1.660539040(20) x 10-27 The proton mass is quoted differently on NIST and wikipedia...even thoug wikipedia (https://en.wikipedia.org/wiki/Proton 1.672621777(74)×10−27kg) quotes NIST as a reference... It would be nice to...

Thanks a lot :-) I have done this over and over again, first with the built in values of mp, me and _amu in nSpire...then looked for more accurate values... I now get a value much closer to the expected value of 2.42*10^-35 eV which is acceptable ( for me), still curious though what causes the...

If I understand what you are saying correct...the method is ok, the numbers are ok ... and a calculation with Ti, nSpire gives the result above...bold symbols are defined variables...

@ Orodruin thanks for your comment... Are you trying to tell me that I have made a mistake, or are you just guessing? I have done the calculation a number of times, which is the reason I post here... I do not think this is a simple matter og calculating ... Zero Gravity

Hello Friends ! I have a question regarding binding energy... Trying to calculate the binding energy of H-1 (hydrogen nucleus). Well it is obvious that the binding energy is zero since there is no other nucleons that the proton is bound to. But after having collected the best possible data of...

Great thread People ! I was just searching the web to find the best technique for sliding down a 100 meter slide with a few turns here and there. An Ipad and Iphones at stake for the winners. I saw and interviewed the winner before the race when he was training. The timing was electronic with...

Thanks DaveC I will have to buy a pair and maybe try to meassure it. -ZeroGravity