Using a Digital Camera to Measure Light Pollution
CAVITE NATIONAL SCIENCE HIGH SCHOOL
Maragondon, Cavite
Using a Digital Camera to Measure Light Pollution of Towns in Cavite
Prepared by
Price Brix Rexson Q. Bernal
IV-Hydrogen
INTRODUCTION
Light pollution, also known as photopollution or luminous pollution, is excessive or obtrusive artificial light. * The International Dark-Sky Association (IDA) defines light pollution as: Any adverse effect of artificial light including sky glow, glare, light trespass, light clutter, decreased visibility at night, and energy waste. * Scientific definitions include the following: * Degradation of photic habitat by artificial light. * Alteration of natural light levels in the outdoor environment owing to artificial light source. * Light pollution is the alteration of light levels in the outdoor environment (from those present naturally) due to man-made sources of light. Indoor light pollution is such alteration of light levels in the indoor environment due to sources of light, which compromises human health. * Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment. * Light pollution can be divided into two main types: * annoying light that intrudes on an otherwise natural or low-light setting * excessive light (generally indoors) that leads to discomfort and adverse health effects
Types of Light Pollution * Light trespass Light trespass occurs when unwanted light enters one's property, for instance, by shining over a neighbour's fence. A common light trespass problem occurs when a strong light enters the window of one's home from the outside, causing problems such as sleep deprivation or the blocking of an evening view.
* Over-illumination Over-illumination is the excessive use of light. Specifically within the United States, over-illumination is responsible for approximately two million barrels of oil per day in energy wasted. * Glare *
Maragondon, Cavite
Using a Digital Camera to Measure Light Pollution of Towns in Cavite
Prepared by
Price Brix Rexson Q. Bernal
IV-Hydrogen
INTRODUCTION
Light pollution, also known as photopollution or luminous pollution, is excessive or obtrusive artificial light. * The International Dark-Sky Association (IDA) defines light pollution as: Any adverse effect of artificial light including sky glow, glare, light trespass, light clutter, decreased visibility at night, and energy waste. * Scientific definitions include the following: * Degradation of photic habitat by artificial light. * Alteration of natural light levels in the outdoor environment owing to artificial light source. * Light pollution is the alteration of light levels in the outdoor environment (from those present naturally) due to man-made sources of light. Indoor light pollution is such alteration of light levels in the indoor environment due to sources of light, which compromises human health. * Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment. * Light pollution can be divided into two main types: * annoying light that intrudes on an otherwise natural or low-light setting * excessive light (generally indoors) that leads to discomfort and adverse health effects
Types of Light Pollution * Light trespass Light trespass occurs when unwanted light enters one's property, for instance, by shining over a neighbour's fence. A common light trespass problem occurs when a strong light enters the window of one's home from the outside, causing problems such as sleep deprivation or the blocking of an evening view.
* Over-illumination Over-illumination is the excessive use of light. Specifically within the United States, over-illumination is responsible for approximately two million barrels of oil per day in energy wasted. * Glare *
Bibliography: BOOKS * Flanders, T., 2006 * Bortle, J., 2001. "Introducing the Bortle Dark-Sky Scale," Sky and Telescope February, 2001: 126. INTERNET * Wikipedia contributors, 2007 * Haworth, D., 2003. "Star Magnitudes," Observational Astronomy http://www.stargazing.net/David/constel/magnitude.html * Cinzano, F., 2000