Nobel Prize in Physics 2014 Awarded for Work on LED Lights
This year’s Nobel Laureates are rewarded for having invented a new energy-efficient and environment-friendly light source – the blue light-emitting diode (LED). In the spirit of Alfred Nobel the Prize rewards an invention of greatest benefit to mankind; using blue LEDs, white light can be created in a new way. With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources.
When Isamu Akasaki, Hiroshi Amano and Shuji Nakamura produced bright blue light beams from their semi-conductors in the early 1990s, they triggered a fundamental transformation of lighting technology. Red and green diodes had been around for a long time but without blue light, white lamps could not be created. Despite considerable efforts, both in the scientific community and in industry, the blue LED had remained a challenge for three decades.
They succeeded where everyone else had failed. Akasaki worked together with Amano at the University of Nagoya, while Nakamura was employed at Nichia Chemicals, a small company in Tokushima. Their inventions were revolutionary. Incandescent light bulbs lit the 20th century; the 21st century will be lit by LED lamps.
White LED lamps emit a bright white light, are long-lasting and energy-efficient. They are constantly improved, getting more efficient with higher luminous flux (measured in lumen) per unit electrical input power (measured in watt). The most recent record is just over 300 lm/W, which can be compared to 16 for regular light bulbs and close to 70 for fluorescent lamps. As about one fourth of world electricity consumption is used for lighting purposes, the LEDs contribute to saving the Earth’s resources. Materials consumption is also diminished as LEDs last up to 100,000 hours, compared to 1,000 for incandescent bulbs and 10,000 hours for fluorescent lights.
The LED lamp holds great promise for increasing the quality of life for over 1.5 billion people around the world who lack access to electricity grids: due to low power requirements it can be powered by cheap local solar power.
The invention of the blue LED is just twenty years old, but it has already contributed to create white light in an entirely new manner to the benefit of us all.
The cute side of the robocalypse: Balancing robots from Japan
muRata manufacturing wants to cheer people up with its latest balancing machine. It’s part of a group of swarm robots, called the murata cheerleaders. But it’s not exactly clear what they’re cheering for.
— Update —
Just discovered this gem:
Dubai - United Arab Emirates (von Miroslav Petrasko (hdrshooter.com))
This Rube Goldberg machine is “powered” by a single beam of light, using mirrors, magnifying glasses, and reflective surfaces to burn through strings, melt ice, pop balloons, and more…
Staring at the Sun, [to scale]
"As we let our own light shine, we unconsciously give other people permission to do the same."
Your tea-drinking experience is about to get a lot more mesmerizing with the upcoming Sorapot 2 by industrial designer Joey Roth. Part teapot, part sculpture, Sorapot 2 has a glass chamber that lets viewers watch the tea brew before their very eyes.
Wearable tech can be implanted in brains, thanks to new power technique
A research breakthrough has identified a way to charge tiny health-tracking devices that could be embedded in our brains, hearts or livers
Full Story: The Guardian
from “A Well is a Mine: A Good Belongs to Me” by Catherine Wagner
"The glass bulb of the lightbulb has been opened, causing the inert gas inside to escape. When turned on, the tungsten filament burns with a flame, due to oxygen entering the light bulb. The light bulb was screwed into a socket, which was replaced with the lamp base using image processing." Via.
Something I wanted to say, but lost desire to.
The terrain might be bumpy but keep moving forward. #Motivation
Drive the #MarsRover at our #SearchForLife exhibition.
#nyc #queens (at New York Hall of Science)