This is a common activity for all types of classes. Basically, you give students a battery, a bare copper wire and a small light bulb. The students are asked to find out different ways to make the ...

I’ve also treated the topic of LED illumination more conceptually; take, for example, this piece from more than seven years ago that analyzed LED and CFL light bulbs as potential successors to ...

Following is a transcript of the video. Narrator: Have you ever wondered how these bands of lights come together? It's a simple string of miniature light bulbs, with some wiring inside that connects ...