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National Geographic stories take you on a journey that's always enlightening, often surprising, and unfailingly fascinating.
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A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.
Anti-Corruption: The Global Fight is a new handbook from IIP Publications that outlines the kinds of corruption, their effects, and the ways that people and governments combat corruption through legislative and civil society actions.
Read the latest stories from National Geographic's Great Energy Challenge
The Solar Ark (ソーラーアーク) is an ark-shaped solar photovoltaic power generation facility which offers activities to cultivate a better appreciation of solar power generation, and thereby benefitting both ecology and science.
Please visit our 101 Science Store. The Transistor Story - "The transistor was probably the most important invention of the 20th Century, and the story behind the invention is one of clashing egos and top secret research."
AIRCRAFT SPRUCE CATALOG PDF DOWNLOAD : To view the files you'll need the Adobe Acrobat reader. If you don't have the Adobe reader, you can download it ahead of time from the Adobe Web site.
If a car moving at 100 kilometres per hour hits a concrete wall, all of its kinetic energy must be turned into other forms of energy. What are those forms, and can anyone describe the overall ...
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