Recent content by NERV

I have got a problem: It's well known that two electric charges have either attractive or repulsive forces on each other. And Einstein told us that there is no message that can travel at a speed beyond c. Besides I was told that the actions and reactions between the two charges are based on...

I've purchased two books on electromagnetic field designing.Thanks for your information.

Thanks for your reply.Would you mind if you describe it in details?

I was discovering a way to focus a number of charged particles which has been accelerated by Van de Graff generator into a beam.I do tried to find ideas in uniform magnetic field,but it seems I can only focus the particles onto a point rather than a beam.So here I was asking whether there had...

As it is known to all,the atmospheric electric field does exists.In fact,near the ground its strength is about 100N/m.That's enough for my design. Let's get some activated carbon powder.I think we can regard them as smooth,conductive balls with density（ρ）=2.7g/cm3,r=1×10-5m。If we want a can...

I believe it because plastic,especially PE molecules can just be regarded as long-chained carbon atoms,while petrol molecules are some shorter ones.So with cracking technology we can get petrol from plastic easily.The profits are high,because the world's oil price keeps increasing and the...

I know there is no way to deflect a neutron by electromagnetic force since it is a uncharged particle.Can anyone come up with any other ways?Thanks very much.

Thanks a lot.Your quote was what I was answering #2,not for you ^-^.And you seems to have the same idea(to beam hydrogen targets with electrons).

I'll get a word in edgeways: Newton had just told us the force equals the change rate of the momentum,which writes: F∝mv/t,Or F=kmv/t. In Metric, k =1.However,you can make k≠1 in other measurement metrics.That's where the floor host's mistake is,I thought.

At this very moment(t=0),the mass(M-m) will recoil at the speed v0=mu/(M-m).Then from now on,the remain mass can be regarded as a spring oscillator,whose initial speed is v0. If you want to know the motion equation of the remain mass(Let's call it M').You need the knowledge of trigonometric...

I know there is a way of electron capture.But,how much energy is it needed?In other words,WHAT CONDITION is the capture reaction required?

how to turn a proton into neutron by e+p-->n? Just as the topic said,is it possible to turn a proton into a neutron by forcing a electron into the proton?If it's possible,what condition is it required?