A deep blue organic light-emitting diode (OLED) developed by researchers at Science Tokyo operates on just a single 1.5 V, ...

Abstract: We proposed resonant-tunneling-diode (RTD) terahertz oscillator with offset slot-ring antenna for efficient radiation of second harmonic signal. From the theoretical analysis, output powers ...

This time I bring an electronic kit for beginners, this is a very cheap and interesting device that displays audio levels into the LEDs just like any audio level bar indicator will do. It is simple ...

SmilePro Advanced Teeth Whitening Kit offers professional teeth whitening results at home for $2.30 per treatment. The kit uses dual LED light technology (blue light for whitening and red light for ...

Union Jack and St George's Cross flags hang from a sign above Westminster underground station, the day after an anti-immigration rally organised by British anti-immigration activist Stephen ...