Lewin's NCF Experiment and Lecture

[wattsup]

Would slipping a small Faraday cage (Like a can shaped one) over the coil stop it from influencing the probe wires?  It would seem to me this would be the easiest way if it works.
Bill

Actually what would be interesting to see is the following as shown below.

Keep the vertical coil (VC) (orange) and the center positioned loop (blue) but position two metal cones (grey) as shown to see if the impress from the VC to the loop is mainly perpendicular. Then remove the top cone and try again. Then remove the bottom cone and replace the top cone and try again. So what would this show you?

Then relate this to which is the open side of the VC that is then being connected to the discharge. Any relation there?

Then remove the cones and slide the loop 1/4 way up, try it, then near the top, try it, then 1/4 way down from center, try it, then all the way down and try it again. So what would this tell you? Simple little things can say a lot.

You can then compare the same as above but replace the cap discharge with a steady pulse. Now what will be the difference?

wattsup

[tinman]

Ok,below are the test results from the vertical wire test,where the two wires from the measuring points to probe are vertical to that of the resistor loop,and around 1.5 meters high-away from the DUT.
The scope probe and ground are then hooked to the end of these vertical wires-speaker like cable.

Results seem to be much as i expected.


Brad

[poynt99]

Brad. 

When you have a chance, all that is left are the wire segment measurements.

Yes, your prediction of the voltage from D to A was correct.

[tinman]

Brad. 

When you have a chance, all that is left are the wire segment measurements.

Yes, your prediction of the voltage from D to A was correct.

Ah yes-i missed that one Poynt.
Had a busy weekend with kids,grandkids and some work on my 4x4.
Will get it done ASAP-probably tomorrow night.

Brad

[poynt99]

OK Brad, no problem.

What is your prediction for the wire segments?

And sorry, your prediction AND measurement for the voltage across points D and A was/is correct.