This video is a follow-up to a previous video on anti-gravity research. The speaker discusses new findings, a patent application stemming from the research, and challenges faced during experimentation, including unexpected results in a vacuum chamber and issues with high voltage affecting measurements.
Based on the transcript, the speaker built the following:
The speaker also mentions ongoing work to develop a solid-state gravity detector and a new plasma thruster for spacecraft, along with a nuclear fusion reactor design. However, these are described as projects in progress, rather than completed builds.