Scientists studying organic light-emitting devices (OLEDs) have made a critical leap from single-color displays to a highly efficient and long-lived natural light source. The invention, described in ...

The creation of the light bulb is commonly viewed as a human achievement—one of those few technologies that actually revolutionized how we live, work, and socialize with our environment. However, the ...

A sweeping history of the electric light revolution and the birth of modern America. The late nineteenth century was a period of explosive technological creativity, but more than any other invention, ...

Thomas Edison at the lightbulb’s golden jubilee anniversary. The story of humans trying to use light and heat to their benefit goes back to prehistoric times. The earliest use of fire for these ...

Today's traffic lights can be controlled by anything from standard traffic control computers to highly advanced AI-driven computer systems that are so "smart" they can predict what's going to happen ...