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Four Beautiful Towns of France & Germany----a photo essay

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Four Lovely neighbours of Heidelberg Four lovely neighbours of Heidelberg A pictorial journey   Wyssembourg, France Wyssembourg is a small town in France. It is on the border with Germany and not far from Heidelberg, Germany's university town. We had taken a train that touched Mannheim and Landau on the way. When the train pulled up at Wyssembourg station, an almost empty platform soaked by drizzles preceding our arrival greeted us. An absolute beauty! Right from there it was a comfortable saunter through a picturesque, pretty, clean and graceful little town. I was so awed that even this potpourri of adjectives is not enough to describe the photogenic French town. A little river Lauter flows through the town. It is so small and so narrow that on first view it gives an impression of a narrow canal flowing through the town. Not far from its larger counterpart Strasbourg, this cute town is rich in history. Born in the seventh century, the town grew up around ...

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 be...