What is the meaning of over-illumination?
Overillumination is the presence of lighting intensity higher than that which is appropriate for a specific activity. Overillumination was commonly ignored between 1950 and 1995, especially in office and retail environments.
What is over-illumination in light pollution?
Over-illumination is the excessive use of light. In the USA commercial building lighting consumes in excess of 81.68 terawatts (1999 data) of electricity, according to the DOE. Even among developed countries there are large differences in patterns of light use.
What happens if there is too much light?
The results support evidence from studies that have suggested that prolonged light exposure in people can affect health. For example, women who experience longer periods of light are more likely to fracture their bones, and such conditions also seem to be linked to an increased risk of cancer and metabolic diseases.
What are the examples of illumination?
The definition of an illumination is the act or process of making something clearer or brighter or a device for doing so. An example of an illumination is an explanation. An example of an illumination is a bright porch lamp. Decorative lighting, as for a city.
Can bright light cause stress?
In fact, people with migraine who have light sensitivity between attacks (known as ‘interictal’ photophobia) are more likely to develop feelings of depression, anxiety and stress.
Is light pollution harmful?
MapMaker: Light Pollution Light pollution, or artificial light at night, is the excessive or poor use of artificial outdoor light, and it disrupts the natural patterns of wildlife, contributes to the increase in carbon dioxide (CO2) in the atmosphere, disrupts human sleep, and obscures the stars in the night sky.
What are the effects of light pollution?
What are the harmful effects of artificial light?
Exposure to Artificial Light at Night Can Harm Your Health Research suggests that artificial light at night can negatively affect human health, increasing risks for obesity, depression, sleep disorders, diabetes, breast cancer and more.
How can we control excessive illumination?
Preventive measures are essential and have to be taken whenever possible to reduce light pollution. Examples include the use of glare-free bulbs, installing low hanging bulbs, having the lights facing downwards, and covering the bulbs to reduce bright skies at night.
How do you speak illuminate?
Break ‘illuminate’ down into sounds: [I] + [LOO] + [MUH] + [NAYT] – say it out loud and exaggerate the sounds until you can consistently produce them.
How many laws of illumination are there?
There are two laws of illumination: 1. Law of Inverse Squares 2. Lambert’s Cosine Law.
Why do overhead lights bother me?
Photophobia is an extreme sensitivity to or intolerance of light, and it can cause people to avoid sunlight, computers, fluorescent lights and car headlights. It is frequently associated with migraines and dry eye syndrome, can be a side effect of certain medications and can also be a sign of pathology.
What is over illumination?
Over illumination is the presence of lighting intensity higher than that which is appropriate for a specific activity. Over illumination was commonly ignored between 1950 and 1995, especially in office and retail environments.
Why is it important not to over design illumination?
Beyond the energy factors being considered, it is important not to over-design illumination, lest adverse health effects such as headache frequency, stress, and increased blood pressure be induced by the higher lighting levels. In addition, glare or excess light can decrease worker efficiency.
What is the medical definition of illumination?
Medical Definition of illumination 1 : the action of supplying or brightening with light or the resulting state 2 : the luminous flux per unit area on an intercepting surface at any given point — called also illuminance
Is outdoor illumination harmful to the environment and human health?
Scattered light from outdoor illumination may have effects on the environment and human health.