It also has the same four LED color options of red, white, blue, and orange. The Nice Veedi flashlight is also cheaper than ...

The LED that Won the Nobel Prize In 2014, three scientists, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura won the Nobel prize for inventing the blue LED in the early 1990s. Although RGB LEDs ...

Another method uses a blue LED and yellow or red phosphors. For a long time, LED bulbs were much more expensive than incandescents; however, today, they are much cheaper and are the primary ...