STATEN ISLAND, N.Y. -- Bye-bye blue. Bowing to officials' complaints, the MTA is getting ready to change the color of the flashing lights atop its Select Bus Service vehicles. According to state law, ...

Have you ever felt a sudden flash of light in your vision or noticed zigzagging lines? This may occur before a severe headache, which could indicate migraines. Migraine symptoms can be different for ...

One of the most confounding moments after I got my first Amazon Echo Dot was when its light ring began pulsing yellow, signaling… well, what exactly? Luckily, deciphering the flashing lights on your ...

Light effects have always been popular. Now that LEDs are available in all sorts of shapes, sizes and colours for reasonable prices, a whole gamut of possibilities has become feasible. Examples are ...

Ponder the red-backed poison frog. In nature, red can issue a warning to predators — stay away, the aposematic message reads. On the road, red can be a warning of its own, often flashing on emergency ...

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 ...

Why do blinking crosswalks have a blinking yellow light to warn motorists that someone is crossing? Shouldn’t it be a blinking red light as this means for traffic to stop completely where a blinking ...

In the last three years, Dr Glen Dighton has received funding from Bristol Hub for Gambling Harms Research, and an honorarium from Greo Evidence Insights for grant-proposal review There’s a reason ...