For kids of the TikTok generation, there's one bedroom essential: smart LED strip lights. The $20 Daybetter 6.45-FootLED ...

See at Amazon Roku's corded LED smart lights measure 16.4 feet, which is perfect for adding an accent wall -- just remove the LED strip from the package and stick it to your preferred wall or corner.

Increasingly, cars are equipped with LED indicator and brake lights. Most crucially, however, the LED is a vital link between electronics and photonics: semiconductor lasers based on LEDs send ...