Part 6/10:
Interest in invisibility technology is burgeoning in the scientific community where numerous theories and prototypes are in development. A notable contribution comes from researchers at the University of Extremadura in Spain. They have recently demonstrated a technology for electromagnetic object masking that relies on the refractive properties of certain substances rather than merely covering an object with a special material. This novel approach, known as plasma cloaking, enhances invisibility by incorporating special additives into the structures of the objects themselves.