Plasma ignition (IMAGE) Ruhr-University Bochum Caption Plasma ignitionof the plasma source used: The plasma is visible here in a so-called filamentous discharge in the form of small purple flashes. Credit © RUB, Marquard Usage Restrictions The image may only be used in the context of the press release "How Bacteria Defend Themselves Against Plasmas" published by RUB on November, 24, 2023. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.