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An Introduction to Lighting
The actual definition of lighting is the deliberate application of light to achieve some aesthetic or practical effect. Lighting is not only referred to artificial lighting but of course to natural day light lighting as well, even artificial lighting can be powered by natural sources using solar polar energy so there is no end to the ways and sources of light and lighting.
Forms of Lighting
There are a few different methods and forms of lighting, here are a few examples:
Downlighting – this method of lighting is very popular and consists of having a lighting fixture within a room on the ceiling that casts the light downwards. This type of lighting can be quite energy consuming and does give off quite a bit of glare.
Uplighting – is the opposite of downlighting and involves bouncing the light off the ceiling. This gets rid of the glare especially on computer screens and glossy surfaces. Uplighting is good because it creates a softer and shadow free effect but is very uneconomical.
Sconce Lighting – is a type of light that is fixed to the wall and can direct the light either downwards or upwards depending on the style of that particular light.
Lamps – are not fixed to the walls and are removable from place to place. Lamps come in a range of different shapes and sizes to suit every room and every style of decoration.
Lighting and Energy
Artificial lighting uses electricity as its energy source. We have all seen the TV adverts informing us how much leaving the lights on in our house can cost us as it uses x amount of electricity. This not only costs the bill payer money but it costs the environment as well. Today being green is a top priority and saving on energy and electricity is a big part of that. It is said that in homes and offices from 20 to 50% of total energy consumed is due to lighting alone. Turning lights off as you leave the room can save a substantial amount to your electricity bill and help the environment. You can even buy lights whose light fixtures have been designed for energy conservation to cut down the electricity intake. So think carefully about your lights and see where you can make a difference, turn lights off when you leave the room, buy energy efficient light fixtures, and use natural lighting where you can.
About the Author
NASA SDO – First Light as seen by Camilla