Sleep is an important topic these days. How many hours of sleep do we need, at which time of the night, and in what position? Some people are boasting about their ability to sleep only a few hours, others are very concerned about getting enough healthy sleep. Yesterday, the German health insurance company Techniker Krankenkasse …
The basic idea how to spent our evenings during our first family holiday was inviting. We would take the kids to bed and then settle down on our private balcony to relax. We had brought a candle and were really happy to find our room equipped with a large balcony with chairs and deckchairs …
Usually LEDs are installed because they are more efficient than traditional street lights. This means you get considerably more light for the same wattage. Andrej Mohar from Dark Sky Slowenia has an example of what happens, when this efficiency is underestimated. The light in the picture comes from a 4000 Kelvin LED street light with …