Marvel Cybernetic Girl - Chapter 15 A Warm Heart

... the palladium metal, under harsh and precise radioactive conditions, continuously amplified its own energy emissions in a recursive loop, a faint nuclear reaction began to stabilize within a tiny, controlled space.

Photons, excited by the process, spiraled along a weak magnetic field, eventually forming a perfect, glowing loop.

A soft light flickered, and a small lamp lit up.

"What is this thing?" Yinsen asked.

"It's a miniature Arc Reactor. There's a much larger ...