Heat is generated, but the result is a zero-friction, high-temperature cushiony flash of light or superheated gas called plasma that yields no detectable melted material, Heaton said.

• 热量产生了，但结果却闪现一个光或者被称为岩浆的超热气体垫，本身无摩擦而且温度很高，根本无法发觉被融化了的物质。