Like the eight types of drywall anchors offering a firm grip for screws in your wall, hollow-core door anchors create a ...

The great thing about hollow wall anchors is that they provide a cheap, fast method for attaching heavy stuff to drywall. There are at least a half dozen wall anchor devices; each works on a ...

Now, the "Ultrafast & Twisted Photonics" research group at the Max Planck Institute for the Science of Light (MPL) has developed a new hollow-core fiber that selectively guides optical vortices ...