One classic set you’ll see in most vintage mystery movies is an interrogation room with a “two-way” mirror in one wall. This cool gadget lets the witnesses see the suspects from another room while the ...

Smart mirrors have become a popular DIY project, offering a blend of utility and futuristic appeal. The Gemini MagicMirror project takes that concept further by integrating Google Gemini’s AI ...

It’s a familiar scene from every police procedural: In one brightly lit room, a perp is being questioned. In an adjacent room ...

*Hello, can women use the bathroom in peace, please? Apparently, the owner of a comedy club in Chicago thinks its just fine to have a two-way mirror showing women using the restroom in his place of ...

A two-way mirror, also called a one-way mirror, is a pane of glass that acts like a regular mirror on one side while allowing someone to see through from the other side. It’s commonly used in ...

Recently (5/21/25), I published a Design Idea (DI) describing a bidirectional current mirror using just two transistors and a diode, “A two-way mirror—current mirror that is.” That circuit works well ...