If we talk about protecting the the enviornemtn, these days we very much focus on climate change. Scientist have known since more than years that we have a problem. And so did politicians like Ronald Reagan and Margaret Thatcher. Seriously, we have a huge problem at our hands and we are running out of time. …
It’s that time of year again. The days are getting darker and shorter. The moods are getting heavier. But there is a light at the end of the tunnel – Christmas. And like every year it’s promising to get even brighter and more colourful than last year. To make this clear, I do like Christmas …
If you’re at the sea, and it’s a warm night, what would you do? I would walk along the beach and take in the night with all its beauty. Start with the sound of the waves, savour the outlines of rocks, add some starlight and the moon. Perfect! Alas, these days this turns out to …
‘Let’s kill the moonlight!’ proclaimed the Italian poet Filippo Marinetti a few years after Edison’s incadescent lamp enchanted the world. With all our light pollution, we have been quite successful in doing this. And today, some people believe they can create an artificial moonlight. The light of a 4000 Kelvin LED street lamp, so some …
In today’s world, LED displays are omnipresent. We use them for computers, smart phones, e-book readers and television. And we use all these appliances until late at night, often right before we go to bed. After all, we usually have more work than we can cope with in an eight hour day, and reading …
So there has been another climate conference, where the powerful have discussed how to save our world. Main topic, was usual, is the CO2-production. Let’s be honest, most countries find it challenging to reduce their CO2-output, some flatly refuse to try. But some years ago, a light appeared at the end of the tunnel of …
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 …