Lighting. Friday , September 21st , 2018 - 20:47:16 PM
Light quality and colour can dramatically change the appearance of a room so it is important to get this right. You wouldn't, for example, want bright white lighting in a bedroom, instead a soft warm white ambiance would be more suitable. When choosing a light bulb you first need to decide which colour temperature you require. Colour temperature is a measure of how warm or cool a colour appears. It is measured in Kelvin; the standard measurement for lighting output in addition to lumen output. Colour temperature is derived from the colour of light produced when carbon is heated. The Kelvin Scale ranges from extra warm white at 2,700k giving a warm yellow glow, to white at 3,500k, cool white at 4,000k and daylight colour at 6,500k which produces a white blue colour. LED, CFL and halogen energy savers are all available in a range of colour. Complaints have been made in the past about LED giving off a cool blue light but with the improvement in technology, as long as you buy a good quality LED this should not be a problem. It is then important to look at the colour rendering index (CRI) which shows to what extent the light will make an object appear its true colour. An incandescent bulb is rated at 100% because its light contains a full spectrum of colour. CFLs do not contain the full colour spectrum but a good quality triphosphor fluorescent rated between 80-90% will be sufficient for everyday use. Higher rated CFLs can be obtained but are usually only used by designers or artists and are less efficient. It is advisable not to buy a light bulb which scores below 80% on the CRI scale. Energy saving light bulbs have received a bad press at times because of the light they produce, but this has tended to be because many poor grade CFLs either brought from supermarkets or given out for free by energy companies have come onto the market.
Transformers come in a range of wattages, usually ranging from 100 to 500 watts. The wattage of the transformer determines the length of landscape wire and the number of lamps attached to the wire. Usually it is best to keep the total wattages of the lighting lamps just under the wattage of the transformer. Also, a very long run of wire, even with an accepted number of lamps attached to it, it might cause the lamps to dim, especially at the end of the run of wire. Typically, transformers come with a timer which can be set to turn the lights on and off at given times. Unlike solar, which will not charge and illuminate if days have been cloudy, landscape lighting provides bright, reliable light anytime.
Psychological and scientific studies have shown that people function better in terms of overall mood and cognitive function when there is sufficient light. People are also more likely to inhabit a room wherein the lighting has been set up to make the space seem warm and inviting. Therefore, lighting strategy must be considered as fundamental during the design of any living space, since lighting impacts how that space will be perceived and utilized.
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