" In addition, refractive index can also be used to 'invisibility', for example, objects with high borosilicate glass materials can also be 'invisible' when moving in glycerol with a refractive index close to its own, " Chu noted.
“此外,折射率也可以用来‘隐形’,比如高硼硅材料的物体在折射率接近自身的甘油中运动时也可以‘隐形’,”褚指出。