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Showing posts with the label Learning Lounge : Green Light 1

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Florence

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FLORENCE     Florence –  the capital of the Tuscany region and the cradle of Renaissance   We opted for Flix Bus while traveling from Venice to Florence. The road journey takes about three and a half-hour. In Florence, it terminates at the rear end of Santa Maria Novella (SMN) train station. One of Italy’s busiest stations, it got its name from Santa Maria Novella Church just across the plaza from the main entrance. We debarked at the station and refreshed ourselves at McDonald's before hiring a cab for our hotel. Florence, popularly known as ‘Firenze’ by the Italians, is located in central Italy. This dreamy city with a romantic name is the regional capital of the lovely Tuscany region.   Columbus Hotel, where we stayed, is located in Lugarno District. We always prefer to book our hotels through Booking.com as we always land up getting good hotels at good locations. Despite being a little away from the heart of the city and Santa Maria Novella station

The Millennium Light

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LED   ----- The Green Light                                                        ( Part 1)  In the light emission phenomenon known as electroluminiscence ,energy is released in the form of photons (light energy) when electrons combine with electron holes within the device.This was discovered by H.J.Round way back in 1907.It took almost 55 years before the first visible red LED was developed by Nick Holonyak Jr. while working in General Electric USA. He is also known as 'father of light emitting diode'.But for almost 40 years LED had very limited application as a light source due to its emission mainly in infrared and longer wavelength spectrum.The application of red LED was restricted to indicator light . It was Shuji Nakamura of Nichia Corporation who brought in the first high brightness blue LED. Since the beginning of this millennium LED as a light source for illumination has grown in rapid strides due to developments in material science, chip fabrication