The Nobel Prize
Lighting plays a major role in our quality of life. The development of light-emitting diodes (LEDs) has made more efficient light sources possible. Creating white light that can be used for lighting requires a combination of red, green, and blue light. Blue LEDs proved to be much more difficult to create than red and green diodes. During the 1980s and 1990s Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura successfully used the difficult-to-handle semiconductor gallium nitride to create efficient blue LEDs.
The focus of this fascinating story is Shuji Nakamura’s quest to create and LED that emits blue light that can manufactured on a large scale. Watch
Red Alert
Red Alert
Red Alert
Thanks, I prefer incandescent light, not LEDs.
he was too late to save Kmart from bankruptcy
My main problem is LED vehicle headlights. The reflectot/beam shaping systen is either nonexistent or designed for longer wavelengths. This makes them dangerous especially during rain at night for other drivers. Generally speaking, I like indoor LED lighting as long as it allows temperature adjustment. I like to work under the higher end, but that is too brash to illuminate living spaces.
That was interesting but now something from my childhood is stuck in my head.
Who remembers this?
Attention KMart shoppers.
Compact fluorescent lighting was supposed to save the planet. Never forget.
I love my LED flashlights but finding a splinter in your finger under LED light is next to impossible.
Lowell, I do my best work in the dark…
Most residential LED lighting is blue light….
Blue light is terrible for your sleep cycle prep….
Red light is great for sleep prep….
I’ve gone so far as adding a red film to blue/green device lighting to minimize any sleep interruptions and I move lights around to minimize blue light in sleep areas.
It works for me.
I had an A&P Supermarket as a kid stuck in a place one time
How to make a yellow LED?
Take a bi-color green and red LED and modulate (flash) the two colors in a special high frequency pattern and you have yellow!
Orange? Just adjust the pattern slightly.
I.F.F.
Red, Green, Blue
000,000,000
or
0000,0000,0000
16 or 32
Spin It
THEY get the GREEN
YOU get BLUE
WE get RED
Really miss the Kmart Blue Light Specials.
Kmart was one of the better stores we had until the morons at sears shit canned the entire business. Now the only thing we have is Target where nearly all the clothes are on the floor and you can’t find the matching shoe that you have in your hand.
I remember paying $10 apiece for a blue
LED in 1996.They come in pink & purple now
for 10 cent apiece !
Definitely above my pay grade. The economic and political elements were well within my understanding but the specifics of the science explanation went a ways beyond my poor education.