Lighting. Sunday , September 23rd , 2018 - 19:04:13 PM
Concealed uplighters are an excellent way to light up tree canopies, tree trunks and tall pillars or columns. Floor-mounted uplighters can also be installed behind plant pots in order to create a silhouette. Downlighters will create shadows on the ground, which are created by leaves, branches and other obstructions that are in the path of the light. Backlighting creates a silhouette which is formed by the object that is placed in front of the light. Objects that have bold or distinct shapes work well when backlit.
Where LED lights really shine though is in light output and electrical efficiency. A typical incandescent bulb produces about 17 light lumens per watt at best. Most of the electrical energy fed to the bulb is radiated as heat, resulting in a very inefficient and wasteful light source. LEDs, on the other hand, produce anywhere from 60 to 100 lumens per watt. Very little energy fed into the LED is radiated as heat, resulting in a very efficient light source that can produce a lot more light than an incandescent while using far less electrical power. Considering the importance of navigation lighting and the need to conserve power on a boat, this is an extremely attractive benefit. You can use less power, yet produce a much stronger nav light signal, improving your visibility to other boats while reducing power consumption at the same time. On smaller boats, you could run a basic set of navigation lights all night and still not deplete your batteries. Increased safety and increased efficiency, all from a simply change in light sources!
LED is regarded as the most effective form of low energy lighting available and many in the industry expect it to have a market share of around 50-60% by 2020. Unlike some other forms of lighting, in particular incandescent, LEDs are efficient because most of their electrical energy goes towards the light-production process. An incandescent bulb, for example, requires its filament to glow white-hot before producing visible light, thus heat is generated as a wasteful by-product which uses around 80% of electrical power. In comparison, less than 10% of LED electrical consumption is emitted in the form of heat.
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