Plasma from a Physalis Dimer
Plasma from a physalis dimer in a microwave oven. With an index of refraction of 8.5 at microwave frequencies (2.5 GHz), aqueous spheres may act as resonant cavities, concentrating electric fields at the point of contact and creating an ionic plasma.
—Aaron D. Slepkov and Hamza Khattak, Trent University, Ontario, Canada
