More than one-fifth of US electricity is used to power artificial lighting. Light-emitting diodes based on group III/nitride semiconductors are bringing about a revolution in energy-efficient lighting ...
Many people believe that the LED was discovered by US researchers working in the 1960s. In fact, Henry Round at Marconi Labs noted the emission of light from a semiconductor diode 100 years ago and, ...
Clip: Is the world more dangerous after the Iran war? Iran appears to be significantly degraded as a military power, but its agreement with the U.S. could open new revenue streams for the regime. The ...
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