Sometimes the simplest things hold the key to understanding complex effects. It turns out that a humble metal pull-chain-just like those used on ceiling fans-can be a pretty good model for complex ...

Alarm Chain Pulling (ACP) is one of the major reasons behind train delays across India. Indian Railways, one of the largest and busiest networks in the world, ferries over 20 million passengers every ...

Yay! Another videoconference call is in the books, so that must mean that it’s time to fumble around awkwardly for the hang-up button with a fading smile. [lanewinfield] knew there had to be a better ...

Instructables user yardleydobon was tired of waving his hand around in the dark trying to find the pull chain of his ceiling fan to light up the room. He took apart a solar garden light and used the ...

Yay! Another videoconference call is in the books, so that must mean that it’s time to fumble around awkwardly for the hang-up button with a fading smile. [lanewinfield] knew there had to be a better ...