exploring the physical world
Beautiful Sea Sapphire Can Make Itself Invisible in an Instant
The sea sapphire has been called “the most beautiful animal you’ve never seen,” switching between vibrant blues, violets, reds, and … nothing. Now, as New Scientist reports, Weizmann scientists and colleagues in Eilat are learning how it changes color and becomes invisible – findings that could lead to new optical technologies.
July 17, 2015