As a side note what on earth are these? https://s-media-cache-ak0.pinimg.com/736x/bd/17/68/bd1768e3a8b5620d72841075d93d5909.jpg https://s-media-cache-ak0.pinim

As a side note what on earth are these? https://s-media-cache-ak0.pinimg.com/736x/bd/17/68/bd1768e3a8b5620d72841075d93d5909.jpg https://s-media-cache-ak0.pinimg.com/736x/bd/17/68/bd1768e3a... And why are they in so many sci-fi graphical UIs?