Lighting. Wednesday , September 19th , 2018 - 19:56:08 PM
Lighting is best to fine tune at night, when one can see the effect of the different types of lights as well as that of the sheer number of lights proposed. One can install different circuits of lights in the garden, each suited to a different purpose; one for entertaining, perhaps lighting up all of the outdoor patios, one that only lights up feature areas such as garden statues or a water feature, and one that uses motion sensors in order to form part of your security system. This will provide you with different functionality that can be used for different occasions.
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.
CFLs typically cost as little as £2.00 and they have a lamp life of 6,000-20,000 hours. This makes them ideal for applications used for a few hours daily and especially for those looking for instant energy savings at low initial outlay. In the past concerns have been raised regarding slow warm up times and flickering but if a good quality CFL is brought today this should not be an issue.
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