Posts

Showing posts from June, 2020

An Invisible War – Overview on the role of UV-C in fighting COVID-19

Image
UV-C vs COVID 19 The invisible pathogen COVID 19 has suddenly taken our entire planet by surprise at the beginning of 2020. The invasion was so sudden that even the World Health Organization (WHO) took time to declare this as a pandemic. At a time when the entire world is trying to arrive at plausible solutions to arrest the spread of this rampaging virus, our Lighting fraternity has joined the fight by concentrating more on studies of non-visual impacts of light. An invisible part of the optical radiation spectrum, ultraviolet radiation has more energy than its visible counterpart due to its shorter wavelengths. The ultraviolet spectrum comprises UV-A (400 nm to 315 nm); UV-B (315 nm to 280 nm); UV-C (280 nm to 100 nm) – classification as defined by CIE. Whenever ultraviolet radiation is used for germicidal purposes, it is known as GUV (Germicidal Ultraviolet ) radiation. It has been found to be highly effective in deactivating or killing viruses, bacteria, fung…

Heidelberg

Image
at a cute little University town in Germany

Almost two decades that I first stepped into this romantic little University town of Germany. On an assignment at Nijmegen, Netherlands, I had decided to spend a few days at my brother-in-law’s house in Dreieich – a quiet suburb, around 10 km from Frankfurt International Airport.  The museum dedicated to Count Ferdinand von Zeppelin, inventor of first rigid airship ‘Zeppelin’ is located in Dreieich. The day my niece Tanya drove me down to Heidelberg, about 100 km from Frankfurt, I was naturally excited. The main reason being I longed to see the place which boasted of the oldest university in Germany and one of the oldest surviving universities in Europe. The Schloss, a romantic twelfth-century castle. overlooking the university town below, the river Neckar (a tributary of Rhine), and the hills beyond were breathtaking views. Enough to instill a feeling of love at first sight. No wonder Heidelberg is known as an ‘epitome of the romantic German…