Magic Eye tubes were popular as tuning guides on old ... and supporting circuitry are all built onto a pair of PCBs and installed in a 3D-printed housing that lives atop a tube base.

An optical illusion featuring shells has left many people scratching their heads - until they realise what's hidden in the ...

The startling image appears to depict an array of multicoloured shells arranged in a pattern - but there's more to ...

Perhaps nothing added quite so much to the charm of vacuum tube circuits from back in the heyday of the vacuum tube as did the “Magic Eye” indicating tube. With the ghostly green glow of its ...