Juan Savin said it was a repulsion wall but he didnt go into detail
Maybe this
Fundamentals of Electric Propulsion: Ion and Hall Thrusters
Dan M. Goebel and Ira Katz
https://descanso.jpl.nasa.gov/SciTechBook/series1/Goebel__cmprsd_opt.pdf
Maybe this
David Swenson's electrostatic "invisible wall" (1996)
Search domain
http://amasci.com/weird/unusual/e-wall.html
amasci.comamasci.com › weird › unusual › e-wall.html
=•Maybe the "wall" effect involves a plug of ionized air which is held in place by the opposite charge on the film==. If so, your repulsion phenomenon would not occur if the "tent" of film was replaced with highly charged metal plates, since the source of oppositely-polarized electric wind would then be missing.
7.7 CASE STUDY - LARGE PLASTIC WEB ELECTROSTATIC PROBLEMS,
RESULTS, AND CURE, D. Swenson, 3M Company
Tremendous static charge generation on a plastic web causes unique physical phenomena and special problems. Solution was simple and cost effective.
David Swenson of 3M Corporation describes an anomaly where workers encountered a strange "invisible wall" in the area under a fast-moving sheet of electrically charged polypropelene film in a factory. This "invisible wall" was strong enough to prevent humans from passing through. A person near this "wall" was unable to turn, and so had to walk backwards to retreat from it.
This occurred in late summer in South Carolina, August 1980, in extremely high humidity. Polypropelene (PP) film on 50K ft. rolls 20ft wide was being slit and transferred to multiple smaller spools. The film was taken off the main roll at high speed, flowed upwards 20ft to overhead rollers, passed horizontally 20ft and then downwards to the slitting device, where it was spooled onto shorter rolls. The whole operation formed a cubical shaped tent, with two walls and a ceiling approximately 20ft square. The spools ran at 1000ft/min, or about 10MPH. The PP film had been manufactured with dissimilar surface structure on opposing faces. Contact electrification can occur even in similar materials if the surface textures or micro-structures are significantly different. The generation of a large imbalance of electrical surface-charge during unspooling was therefore not unexpected, and is a common problem in this industry. "Static cling" in the megavolt range!
On entering the factory floor and far from the equipment, Mr. Swenson's 200KV/ft handheld electrometer was found to slam to full scale. When he attempted to walk through the corridor formed by the moving film, he was stopped about half way through by an "invisible wall." He could lean all his weight forward but was unable to pass. He observed a fly get pulled into the charged, moving plastic, and speculates that the e-fields might have been strong enough to suck in birds!
The production manager did not believe Mr. Swenson's report of the strange phenomena. When they both returned to the factory floor, they found that the "wall" was no longer there. But the production workers had noticed the effect as occurring early in the morning when humidity was lower, so they agreed to try again another day. The second attempt was successful, and early in the morning the field underneath the "tent" was strong enough to raise even the short, curly hair of the production manager. The "invisible wall" effect had returned. He commented that he "didn't know whether to fix it or sell tickets."
So maybe they werent fixing the fountain ehh
Maybe this
Home/New York
New York
Watchtower installed along the border between the United States and Mexico
catefassbenderSeptember 5, 2021
Sunland Park, New Mexico — The federal government turned to cutting-edge cameras Developed by the wonders of virtual reality To help them monitor the southern border — by creating an invisible border wall.
Known as Autonomous Surveillance Towers, high-tech surveillance poles are powered by solar energy and use artificial intelligence to detect movements along a two-mile radius and send information in real time. An agent that patrols the area.
And now it’s located in various locations along the US-Mexico border, about 2,000 miles.
“AST is in a remote location that is difficult to reach,” border guard agent Joel Freeland recently told the post. “They are environmentally friendly because they operate 24 hours a day and rely entirely on solar power.”
AST was developed by 28-year-old Palmer Luckey, the founder and designer of Oculus VR and Oculus Rift.
View of the US-Mexico border from Sunland Park, New Mexico on September 1, 2021.
NY Post Joel Angel Juarez
The tower, which was first tested in the border San Diego sector in 2018, was recently implemented in the El Paso sector. Immigrants along the border.
Agents working in the El Paso sector have so far detained 155,892 people in fiscal year 2021 ending September 30. This is almost three times the number of 54,396 in the 2020 fiscal year as a whole.
https://newyorklatestnews.com/watchtower-installed-along-the-border-between-the-united-states-and-mexico/272831/
https://twitter.com/RichardGrenell/status/1484171975035551750?s=20