This slide shows analog graphs of the simultaneous output from both the magnetometer (detects and records magnetic field changes in the extreme low-frequency range) and the gravimeter (detects and records changes in acceleration due to gravity), during the visual and movie-filmed (on Kodak Super 8 mm film) encounter by my project mobile laboratory and our three-person crew (It included me.) with a very long 'mothership', 'stargate' or whatever it might be called, and associated 'shuttles', which seemed to just pop into view beside or near the 'mothership'.
So, please read the following necessarily abbreviated account of the event:
On the afternoon of July 27, 1978, we had driven the lab vehicle into the Prescott National Forest until the road we were on ended at high altitude on what we think was the Skull Valley Overlook. We waited there watching the daylight sky with the magnetometer and gravimeter sensors into passive (not recording) monitoring mode and carefully watched the sky for several hours. Tiring of the non-productive hours, we decided to wind up the long shielded cables of both sensors (magnetometer and gravimeter), put the equipment back in the vehicle, and head into Prescott.
Just as we were putting the last item back in the vehicle, I declared in frustration, "I KNOW those bastards. Just as sure as this stuff in all in, they will show up." Within ten seconds, one of the two other crew members shouted, pointing high almost above us. "Look! Look at that thing up there!"
Just as I had half joked, high up was a white spherical-looking object (about 1/5 the moon's angular size, or ~ 6 arc minutes), moving in sine wave (look it up if needed) path at maybe five degrees per second into our northwest! We grabbed the sensors and cable rolls, and rushed them out to their proper positions and deployments, but before things were readied, the object had darted into the near-top of a rather isolated cumulonimbus 'thunder cloud', an estimated 90 miles away to our northwest, in the approximate direction of Winslow, Arizona.
By the time I manually turned on the mag-grav unit, there was only typical background ELF magnetic activity, so I set the trigger threshold far up the gauge from that and turned the unit onto passive monitoring. If ELF magnetic pulses above the set threshold level were to occur, the unit would turn itself on and start simultaneously recording sensor output from the magnetometer, the gravimeter, the WWVB date and time signal from the National Bureau of Standards broadcast from Fort Collins, Colorado, and a reference tone. I set the machine so that it would also alert us by putting out an audio-frequency analog of the ELM effects being detected.
At about 6:24.5 PM (The sun was still well up in the sky, as it was summer.), the magnetometer analog audio began blasting out strong audio pulses, and the needle showed me that the signal was very strong and far above even the high threshold I had set earlier. We looked around but at first saw nothing, when suddenly one of us spotted a long, narrow something coming out of that distant cumulonimbus cloud into which the white object had disappeared minutes before. The long, narrow object with an aspect ratio (length to thickness) of maybe as 20-30 to 1, 'parked' itself to the south of the cloud, with, all the while, bright 'something' pulsing rapidly off that south end.
I grabbed the sound-recording movie camera and started filming, while recording the background audio analog output from the magnetometer on the film soundtrack. From time to time, sudden bursts into visibility by smaller objects occurred, right beside or very near what we now realized must be a 'mothership'. That was as at the estimated 90 miles away, but you can see one of the seemingly huge delta-like objects (with a corona) that suddenly popped into view there, in the upper-right of this slide.
In the two simultaneous analog graphs, from both magnetometer (top) and gravimeter (below), we can immediately see the very strong correlation between the magnetic and the gravimetric effects during specifically spikes of very short duration. Each little square represents 1/25th second, so count five of the larger squares of five small ones each, and you can see what one second of sensor input looks like.
The data recorded in this event (there are many yards of analog graph) have been analyzed by a physicist and engineer at Design Technology Corporation that produced the dual unit, and we were told that the gravimeter output cannot be accounted for by 'channel cross-talk' (a technical term) nor can it be explained my magnetic induction by the UFO magnetic effects (Keep in mind, too, that cables were shielded from magnetic and electrical pulses.). One fact supporting that conclusion is the relative height of short-duration spikes in the gravimeter sensor output, as contrasted with relatively short correlated spikes in the magnetometer sensor output.
The exaggeration of the spike in the gravimeter sensor output (relative to it in the magnetic) was explained as due to inertia of the sensor mass in the gravimeter sensor. The inertial effect would not be in evidence if the sensor were operating within the frequency range for which it was designed, but those particular spikes were of such short duration that the effect of sensor mass inertia shows up in the signal output.
later, to be sure, my project had the magnetic and gravitic data analyzed by our staff Ph.D. physicist and by two engineers. One was a mechanical engineer, the other, an electrical engineer. THEY EACH CONCURRED WITH THE MANUFACTURER, THAT THE GRAVIMETER SENSOR OUT-PUT REPRESENTS ACTUAL WAVES OF CHANGE IN ACCELERATION DUE TO GRAVITY. The same is true for the recordings made during the 35-minute two-UFO encounter, on the north edge of the White Sands Proving Ground, about eight days earlier, very late in the night of July 19, 1978.
