The secret to the screens is in what's behind them: a thin strip of metal-coated plastic that's only 50 microns thick -- about half the width of a human hair -- and wraps around a spool.

CNN: HP developing a 'Dick Tracy' wristwatch

The neutrons are shot between two parallel plates, one above another and separated by about 25 micrometres - half a hair's width.

BBC: Neutrons could test Newton's gravity and string theory

While a single, bed-width cushion creates an orderly line, a pair of bolsters one for each half of the bed makes more sense for bedmates with opposing propping needs.

WSJ: Bolster Cushions Win Best Supporting Rolls