2 years ago
Last edited at 7:03AM on 6/19/2011
simple, do a glass test: 1) take a piece clear glass outside (careful dont cut yourself); 2) hold the glass in front of you (use 2 hands if needed); 3) look down (at the black thing there); 4) move as necessary to see the glass' shadow (or you can use the easy button @ staples) =)
it depends whether or not the object is see through or just invisible. if you can still feel the object then that means that light can't pass through it causing a shadow, but if it is intangible then light can go right through it thus preventing a shadow.
Perfect invisibility would require theoretical curving light around the body so the light reaches your eye as if the object was not there. Light would also hit other surfaces (floor, walls) as if it was not there: no shadow! That would be an ideal cloaking mechanism.