DESI - Testing a Griffin Brock Tesla shadowgraph tube with Marshall 4K studio Camera
And more replication details
Update on the testing of Griffin Brock’s Nikola Tesla Shadowgraph replication tube.
This week at Ellia Foundation’s lab, we tested the MFMPs Marshal CV420-30X NDI 4K studio camera (kindly donated by Charles Holmes) with the Griffin Brock Desmitron tube that has previously shown an ability to produce shadowgraphs. This camera has a large sensor and is highly remotely controllable, having up to F1.6, 1s accumulation time, dynamic range boosting and more. It can be controlled like this and powered over IP and then send its video and audio down the same network cable 100m if need be. Great for stand off work!
We were able to capture the best images yet from this set-up before the tube electrode failed, which shows that there is still potentially a long way to go to get the power levels, duty cycle and more right in the PSU.
Slumped Al electrode, weirdly still partially attached to teh Nickel stub. Note what look like impact deposits in the tube inner surface, these need to be investigated.
Before this slumping, we looked at the tube just after it started to mirror the inside and, to my eye, it look like it had an array of structured spots on the surface.
What this test proved is that sensitivity of the camera and the type of screen used is so important. With better sensitivity, lower power could be used and at some point the collective effort will lead to high fidelity alongside long lived tubes.
Here are the key segments at 4k.
And here are a few images with a little post processing.
Scintillations
Jan Rak observed scintillations (something causing bright spots in the recorded iPhone photos). This could be due to some form of ionising radiation impacting the camera sensor. This is not likely to be low energy x-rays, since these would not have the necessary mean free path from the electrode to reach the camera sensor.
Notably, the scintillations were ONLY visible on the 1 (out of 3) Desmitron tubes that has been able to produce shadowgraph images.
It is suspected that they may be due to the dishevelment of Energy Solitons / Exotic Vacuum Objects (EVOs) in the sensor. This would be consistent with the radiation remediation observations that were predicted by myself and then apparently observed.
So we did a recording of these scintillations on an old CMOS sensor based Sony HDR-HC7E video camera, the result you can see in the silent video below.
The intension is to use the “Cosmic Ray Finder” method I developed in 2017 alongside self developing x-ray film to establish if these are in fact Energy Solitons / Exotic Vacuum Objects (EVOs) and/or the strange radiation they can produce. If they are proven to be, looking for these scintillations is a way to quality control which tubes are in a state to produce shadowgraphs and likely to also be able to stimulate radionuclide decay.
Further 3rd party replication
MFMP contributor David Boutilier has also been working on attempting replication of the effect. In his latest work, where he has built his own tubes from scratch, he has been able to replicate the effect observed by an MFMP supplied RadiaCode scintillation based detector exposed to a Griffin Brock tube, in addition to scintillations on a video camera.
I have successfully built one Desmitron tube with a getter and it does produce similar effects on the RadiaCode as Griffin’s tube. I am gearing up to build more of these and two variations having graphite and Beryllium electrodes. The new high vacuum tube that works with getter DID produce hot pixels on my iPhone.
David Boutilier, 7 March 2026
See some of his experiments below.
In this experiment, you can see the RadiaCode responding in the right corner of the room.
What this means is that, not only are the effects able to be replicated with a non-1920s diathermy unit (Ellia Foundation), but that the effects from the tube can be replicated by an entirely 3rd party built tube.
In the coming weeks, I hope to be teaming up with Griffin Brock and Alan Goldwater over in California at Alan’s Magic sound lab to do some more testing on the potential of these tubes emissions to remediate radionuclides.
We still do not understand the emissions from these tubes so please everyone working with them assume that it could be damaging to health and do not spend time near these tubes when they are energized until the emissions are proven safe. Some anomalous findings that do not seem to fully fit one theory so it could be that they are producing multiple radiations simultaneously. You may notice that those two videos Bob posted of mine are only a couple seconds long each…..this is because I am in close proximity filming it and do not want time weight dose to be high. I only run these tubes for any amount of time outdoors away from people with a 50 foot extension cord. This is out of caution simply based on the reactions from geiger counters, cloud chambers, and the Radiacode.
Just amazing, outstanding work done all around! Bravo!