One such smartphone comes out this week from Red, a company with roots in digital cameras for movie productions. The new Hydrogen One has a holographic screen that produces 3D visuals users can ...

The term “red dot” is a catch-all phrase that includes reflex sights, prismatic sights, and holographic sights. We’ve assembled a selection of all three types of red dot sights to help you ...

Hologram projector DIY instructions and supply list, showing transparent tape, red-handled scissors, and a pattern for small ...