I find it remarkable that within a matter of only a few years, such advancements are being in various fields generally under the umbrella of "invisibility". Ran

I find it remarkable that within a matter of only a few years, such advancements are being in various fields generally under the umbrella of "invisibility". Ranging from electromagnetic wave propagation over nano-scale materials to controlling fluid dynamics to create visual invisibility to sound cloaks and now something that works similarly in water. Talk about living in the age of wonders.