Thread: Eric Dollard
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Old 10-10-2018, 02:05 PM
Marcus Neuhof Marcus Neuhof is offline
Join Date: Nov 2012
Posts: 76
Hi Adrian,
Quite understood that you've been busy, and looking forward to your new publications when they come!

To clarify, when you say displacement, I assume you are referring to displacement current.

A simple approach for measuring displacement current in condensers is presented here:
See also:

Naturally, this assumes the "displacement current" of Maxwell is indeed what we want to measure. This may not necessarily be the case.

Your theoretical model of assembling a delicately orchestrated harmony and then smashing it to pieces with a lightning bolt in order to exploit theorised external corrective forces is very interesting.

I am not sure if this is consistent with how Tesla understood things, but that's no cause for discouragement. Either you're right or you're not, the experiments will tell soon enough.

When you say that "...the displacement event is so short as to be essentially un-measureable with common equipment, before transference takes over and dissipates the effect of the discharge as electric voltages and currents..." this would seem to imply the 'displacement event' is a non-electrical or perhaps even non-physical phenomena.

Have you already obtained experimental evidence for this conclusion, and if so, what did you find?

Measuring very high speed electrical transients, on the other hand, is much easier than it was in Tesla's day.

In fact, it seems unlikely that his original research would have been based on events which are too fast or too short to measure with modern equipment: today we can measure transients with picosecond duration, but generating them requires microwave-design style considerations where geometry and materials are concerned.

On the other hand, it seems unlikely the "brass and wood" approach of Tesla's day would have permitted similar speeds *assuming he was working with the same "stuff" in an electrical sense*.

Eric Dollard has referenced the Tesla mercury switch as the "ne plus ultra" of transient switching devices. Here is Tesla's patent:

I am curious to hear more about your experiments with a vacuum tube in series with the wire. How do you suppose transference works? Why would the addition of a vacuum tube prolong the lifetime of a displacement event?

As to the subject of producing highly non-linear triggers:

Eric Dollard has frequently referenced the Steinmetz "Transients" chapter on lightning arrestors, which depicts a series of brass balls forming a distributed spark gap.

As it happens, one of the (modern) techniques for the production of very fast transient impulses is the Marx generator, which uses precisely the same geometry. See e.g

Particularly when equipped with a pulse forming network (e.g a peaking capacitor) at the output these devices are capable of producing transients with 300ps rise times at repetition frequencies above 300Hz. For example:

It has been observed by other experimenters that an erected Marx generator, when charged through inductances rather than resistances, is eerily similar to Eric Dollard's "analog computer".

However, even the fastest repetition rates achievable by Marx generators are likely well below that of Tesla's rotary mercury switch, even if they are likely able to produce sharper transients.
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