Of the five senses sight, sound, smell, taste and touch, which provides the most information to the brain?For obvious reasons, I thought it is sight, but it turns out that there is a huge area reserved in the brain for the sense of touch. Vision, also occupies a large portion of the brain, by the... View full entry
What if you stopped going outside?
Best kindergarten you've ever seen
First attempt by a lighting manufacturer to warn customers about the wrong light at the wrong time and its biological disruptions. http://edition.cnn.com/2015/06/09/health/light-bulb-warningThe article says thus "The packing on every one of their products will carry a "Notice" that "exposure to... View full entry
A vivid example of light and dark cycle manipulation to improve or deteriorate health.There was a time, when chicken used to roam around freely in the farms, exposed to natural sunlight and darkness, natural food and water consumption regulated by the light and dark cycles of nature. They were... View full entry
Optogenetics: Controlling the brain with light
Time-Restricted Eating May Reverse Diabetes & Obesity
Recently I came across a news article about plans in New York city to switch off lights at night (LAN). http://luxreview.com/article/2015/05/new-york-mulls-nighttime-lighting-ban-for-40-000-office-buildings. It was heartening to read that article, but the reasoning for this move is an absurd one... View full entry
Road lighting is so much in favor using streetlights instead of post tops. Even if the road width is less, traffic flow is minimal or it is a private road, still street lighting fixtures are used without a second thought.While street lighting is indispensable for roads with high speed traffic and... View full entry
(Excerpts of Chapter 3 from "Healthy Lighting of your Homes - Guiding principles to health efficient lighting of homes". The book is available for purchase at http://www.amazon.com/dp/B00TKSLSK4)Natural day light is part of the electromagnetic spectrum of the sun. EM spectrum is the energy behind... View full entry
In this post, i will make an attempt to capture the evolution of lighting schemes from room based lighting to the contemporary, task based and 'non-visual' aspects of lighting schemes. While, the horizontal lighting levels are still the primary consideration, impact of light on our perceptions... View full entry
"The beginnings and ends of shadow lie between the light and darkness and may be infinitely diminished and infinitely increased. Shadow is the means by which bodies display their form. The forms of bodies could not be understood in detail but for shadow." - LEONARDO DA VINCILight and shadow have... View full entry
Why does my shadow change color?
Have you ever wondered how the sunflower is able to follow the sun?Probably you know that they exhibit a property called heliotropism or solar tracking, commonly found in many plants. It is essential for maximum photosynthesis. But why are the sunflowers not facing the setting sun in the picture... View full entry
Richard Dawkins demonstrates the evolution of the eye
Evolution of the Eye
Physiology of the Human Eye
Now you see it!, Now you don't! - The Science of Visual Awareness!
In 2001, I attended a training course conducted by Dr. Warren Julian, from University of Sydney, which created a new understanding of lighting. Me and my friend became ardent fans of the professor and peppered him with questions after questions and did not even let him eat peacefully during the... View full entry
This blog would attempt to cover basic design factors typically considered in lighting design. In 1998, i was asked about the material of the filament inside the incandescent bulb, for which i did not have a clue, at that time. I am an engineer and i have the aptitude to learn the subject is what i told the interviewer and surprisingly, got into the lighting industry! Perhaps it is that shameful ignorance that gave me a voracious appetite to proactively seek, learn and understand lighting.
