There are a lot of things that make a high school football game interesting and unique. The bands. The student sections. The traditions. But visit one of several stadiums in the Oklahoma City metro ...

A trial last year assessed how the installation of additional flashing LED beacon lights on the front and side of trains affects their visibility at level crossings.

This simple and cheap circuit is not just for Christmas! There are just two resistors, a small-signal transistor such as a BC547, one ‘flashing’ LED and a string of ‘normal’ LEDs. The flashing LED ...

Looking into your rearview mirror and seeing the flashing lights of a police car behind you is likely one of the last things you want to see as a driver. After all, most of us associate those flashing ...