A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long battery life.

Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...

If you wanted to build a robot that chased light, you might start thinking about Raspberry Pis, cameras, and off-the-shelf computer vision systems. However, it needn’t be so complex. [Ed] of ...

Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer. This easy step-by-step tutorial guides you through crafting a homemade ...

When it comes to electromagnetic waves, humans can really only directly perceive a very small part of the overall spectrum, which we call “visible light.” [rootkid] recently built an ...

Magnets keep strings suspended without anchor points, and pushing a magnet piece bends notes, so you get expressive sounds ...

The dazzling lights of the aurora are created when high-energy particles from space collide with Earth's atmosphere. While ...