You mean an anti-matter wave.
For context, please watch the "Crisis on Infinite Earths" five-episode series.
Episode 1 is on the Disc for Supergirl Season 5.
Episode 2 is on the Disc for Batwoman Season 1.
Episode 3 is on the Disc for the Flash Season 6.
Episode 4 is on the Disc for Arrow Season 8.
Episode 5 is on the Disc for DC Legends of Tomorrow, Season 5.
Check out this cool animation I made on Khan Academy of one in action:
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!