These light up paper circuit cards were much easier to make than I expected and only need a few inexpensive materials.

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

With so much analog-circuit design being done by automated tools and circuit-performance analysis done with tools such as Spice, it may seem anachronistic to actually go through a basic circuit in ...

The creative new approach could lead to more energy-efficient machine-learning hardware. On a table in his lab at the University of Pennsylvania, physicist Sam Dillavou has connected an array of ...