US cities take second look at LED after health warning

US cities take second look at LED after health warning

US cities are taking a second look at LED street lighting after the American Medical Association issued a warning earlier in the year that blue light can disturb sleep rhythms and exacerbate serious medical conditions.

The best of Lighting Spy

The best of Lighting Spy

Lighting professionals: What you see may upset you. Ray Molony counts down Lighting Spy’s Top 40 worst crimes, blunders and screw-ups.

 

Most Americans have never seen stars due to pollution

Most Americans have never seen stars due to pollution

Nearly a third of people on the planet have never seen the Milky Way, due to artificial illumination in towns and cities. The situation is considerably worse in the United States, where 80 percent of people have never seen an unrestricted night sky view. 

Why LEDs have a key role in the horticulture revolution

Why LEDs have a key role in the horticulture revolution

In the most basic sense, light is crucial for most living things residing above deep sea level. Plants use light to develop by a process of photosynthesis, where CO2 is converted into carbohydrate in the chloroplasts of the plant cells. It is also possible to enable photosynthesis using artificial light, and control the development, shape, and flowering period of a plant. 

Seven ways to avoid a security lighting nightmare

Seven ways to avoid a security lighting nightmare

So you want to install security lighting to keep the villains away, how difficult can that be? Well, there are a few pitfalls that are best avoided. Here are some mistakes to dodge when securing your property.

Value Proposition: Car park lighting

Value Proposition: Car park lighting

Our Value Proposition looks at the benefits of upgrading from traditional fluorescent tubes to LED arrays in a typical car park scheme, using IP-rated luminaires.

Three way to light walkways and paths

Three way to light walkways and paths

At the risk of stating the obvious, paths are mainly used by pedestrians. This means the lighting has to meet different criteria from traffic routes or town centres. Safety always comes first so the path must be clearly delineated; any changes of level or direction must be visible and other pedestrians should be recognised easily.