Cargo wrote: ↑Wed Aug 03, 2022 5:05 am
Color me rabbit. Go ahead and url a sample scope in a catalog of the type you need.
I have never used a scope, it would be better to find someone who has a scope or has access to one.
The faster the scope the better. The faster the scope then the shorter/smaller u can make the experiment.
I asked a guy with a 20 GHz scope to do my X but he didnt get back (& he had done very similar Xs before)(not for me).
I asked another guy with a 350 MHz scope (who had done a famous X before), but after a few emails he didnt reply, i think that he reckoned that my X was baloney (& i had said i would pay the $100 for the rods).
I sent an email to my local university but no answer.
I saw new 300 MHz scopes on ebay for $500, but good probes cost another $200.
Most scopes are 4 channel. But my X needs only 2 channels.
Anyhow, using 2 channels u get the full speed of the scope. If u use for some reason all 4 channels then that halves the speed of the scope to a half of its supposed rating.
Electricity goes at 1 ft per nanosecond (if no insulation) -- so an 8 ft rod takes 16 ns (or about 24 ns for a threaded rod). A 1 GHz scope would measure 16 ns +- 1 ns, or praps it is +- 0.5 ns. And 24 ns +- 1 ns or +- 0.5 ns. That looks plenty accurate enough to me.
For the same accuracy a 300 MHz scope would need rods 3.3 times as long, ie 24 ft (by coupling three 8 ft rods together). Rods cost say $10 each.
Electons might earn a Nobel.