Geometry.Net - Basic_L: Light Pollution


Home - Basic_L - Light Pollution

e99.com Bookstore

Images

Newsgroups

1-20 of 171 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next 20

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Light Pollution: more books (100)

Light Pollution: The Global View (Astrophysics and Space Science Library, Volume 284)
Light Pollution: Responses and Remedies (Patrick Moore's Practical Astronomy Series) by Bob Mizon, 2001-12-06
Light Pollution, Radio Interference, and Space Debris: Proceedings (Astronomical Society of the Pacific) by D. C.) International Astronomical Union Colloquium 1989 (Washington, David Livingstone Crawford, 1991-12
Take Back the Night.(controlling light pollution)(Brief Article): An article from: E by April Reese, 2000-05-01
Asphalt Surfaces As Ecological Traps for Water-Seeking Polarotactic Insects: How Can the Polarized Light Pollution of Asphalt Surfaces Be Reduced? (Environmental ... Technologies, Regulations and Safety) by Gabor Horvath, Gyorgy Kriska, et all 2010-10
Light Pollution Handbook (Astrophysics and Space Science Library) by Kohei Narisada, Duco Schreuder, 2004-01-01
Dobsonian Telescope: Altazimuth mount, Newtonian telescope, John Dobson (amateur astronomer), Objective (optics), Optical telescope, Light pollution, Magnification, Equatorial mount
Light Pollution: List of Liberty Ships
Controlling Light Pollution and Reducing Lighting Energy Consumption: Guidance Note
Light Pollution by Anthony Shafer, 1985
Security Lighting: Physical Security, Crime Prevention Through Environmental Design, Light Pollution, Closed-Circuit Television, Emergency Power System, Light Tube, Rule of Thumb, Electric Company
Light Pollution: The Global View (Astrophysics and Space Science Library)
Pollution: Nonpoint source pollution, Persistent organic pollutant, Air pollution, Water pollution, Soil contamination, Litter, Radioactive contamination, ... Light pollution, Thermal pollution
Observational Astronomy: Light Pollution

lists with details

New England Light Pollution Advisory Group (NELPAG)
Volunteer organization whose purpose is to educate the public on the hazards of outdoor night lighting, through meetings across the region, information at the website and online publications.
http://cfa-www.harvard.edu/cfa/ps/nelpag.html

Extractions: The New England Light Pollution Advisory Group (NELPAG) A big role of NELPAG has been providing information through this Website since early 1995, with hundreds of accesses to this page being logged every week for the past couple of years (as of August 1997, we counted more than 47,000 accesses to this page; our best week so far was the one ending 1997 May 4, when 766 accesses to this page were recorded in that week alone). [As of August 1999, we are still getting 400-600 accesses per week, with over 100,000 estimated accesses to these NELPAG web pages since 1995.] We have found that there is a great public demand for information on outdoor-lighting issues, and that there has been unfortunately a great dearth of sources that the interested individual can seek out. It should not be surprising, then, that we have received high praise from many people around the world for the information provided here. Imagine children growing up without being allowed to see trees or birds (or any other aspect of nature): now, how is this any different from preventing our children from seeing the stars?! But by our thoughtless erection of outdoor lights everywhere - without consideration of glare and light trespass, without consideration of safety, without consideration of the right to privacy, and without consideration of the energy waste and the waste of taxpayer dollars - we are making it so that a very small percentage of children are able to grow up in the world today with the ability to see and ponder the wonders of our beautiful starry night sky. Indeed, after a full century now of outdoor electrical lighting, one must wonder what a lot of the lighting manufacturers and installers were
Light Pollution Awareness Website
Includes lighting pictures, satellite images, the latest news, lots of links and information about how to shield lighting.
http://members.aol.com/ctstarwchr/

Extractions: Light Pollution Awareness Website Home of the Research Page LiPAW Quick Reference Index Alerts Hot News What Is Light Pollution? Shielding ... Learn about the gift that keeps on giving! The LiPAW Has Been Granted The Following Prestigious Awards! Thank You Very Much! On December 2, 2000, the Light Pollution Awareness Website was selected as a featured site in Lightspan's StudyWeb® as one of the best educational resources on the Web! StudyWeb® is one of the Internet's premier sites for educational resources for students and teachers. Since 1996, Lightspan's expert reviewers have scoured the Internet to select only the finest sites to be included in StudyWeb's listing of educational links. On October 25, 2001, the Light Pollution Awareness Website (LiPAW) was granted the Griffith Observatory Star Award for presenting useful, thorough, and accurate information in a well-organized and attractive way, making the night sky more available to everyone. On November 4, 2001, the Light Pollution Awareness Website (LiPAW) was awarded the Stellar Link Award by astronomylinks.com. Astronomylinks.com is a website dedicated to the finding and presenting of the best astronomy and space links on the Internet and your site was found to shine out among the best. DarkSky Alerts! We Need Your Help!
Light Pollution Information -- Astronomical Society Of Greater Hartford
Learn how glare can affect anyone with this concise information page collated by the Astronomical Society of Greater Hartford. Includes lots of links.
http://members.aol.com/copernicanview/

Extractions: Visit! The Astronomical Society of Greater Hartford is a club member of the International Dark-Sky Association The members of the Light Pollution Education Committee work hard to raise awareness of the Society members and the general public to inform them about the effects that obtrusive outdoor lighting have on society. Light Pollution affects astronomers more profoundly in one way because it greatly diminishes, if not completely removes the view of deep sky objects in the cosmos, but the Light Pollution affects everyone! Join! What is Light Pollution? How could light ever pollute something? It disappears as soon as the lamp is turned off and no sticky toxic residue is left in its wake. This cannot be a form of pollution, can it? The answer is yes, light can actually pollute the outdoor environment and wash away the view of stars in the sky. As awareness raises around the world, this term is heard in more and more places. It is a curable problem and can be prevented through the application of well designed and applied outdoor lighting. Light Pollution occurs in the three following forms: It causes an atmospheric phenomenon known as skyglow. Have you ever noticed the clouds overhead glowing an eerie pink, white, or orange color before? This wasted light is known as skyglow. It happens because of poorly designed and improperly aimed light fixtures called luminaires. Luminaires that do not offer adequate shielding usually spill wasted light into the sky and across property lines where it does not benefit anyone. When light spills into the sky, it reflects off of tiny airborne dust and moisture particles. This happens even on very clear evenings, too. The skyglow phenomenon directly affects the scientific research of amateur and professional astronomers. It also affects everyone else who simply enjoys a dark night sky abundant with stars overhead. Skyglow is a curable condition, and we can still have adequate and safe illumination in the outdoor environment.
Light Pollution, The Neglected Problem
light pollution The Neglected. Problem. By John Batinsey. Member, Eatontown, New Jersey, Environmental Commission. A version of this article appeared with the same title in the. Winter 1994 issue of
http://www.monmouth.com/~ksears/litepol1.htm

Extractions: By John Batinsey Member, Eatontown, New Jersey, Environmental Commission A version of this article appeared with the same title in the Winter 1994 issue of ANJEC Report. Do you sometimes find yourself squinting at night just to see the roadway? Do you ever wonder why that is? Surely all the glare and obtrusive light causing this loss of visibility must be necessary-part of civilization. After researching the causes of light pollution, the Eatontown Environmental Commission realized that we can have effective outdoor lighting without these problems. As a result, Eatontown adopted a comprehensive outdoor lighting ordinance whose goals are to reduce unnecessary glare, thereby improving night-time visibility for safety and security. The ordinance will also help reduce unnecessary sky glow. Most of these improvements will even save energy, as well as reduce cost. Much of the outdoor lighting that we see at night wastes energy in the following different ways: by excessive illumination, by unshielded or misaligned light fixtures, and by inefficient lamp sources. EXCESSIVE ILLUMINATION.
Light Pollution
light pollution. What's light pollution? Click here and see. Clinton Township Lighting Ordinance. Glarebuster at a Discount?
http://www.njaa.org/light.html

Extractions: If you are thinking of buying a Glarebuster shielded light , the store in Annandale that sells them, Hesco Lighting , has a 20% off coupon in the latest Sprint phone directory, Hunterdon edition. 20% off is a lot. See if your neighbors plan to use the coupon, if not, ask if you can have it. We can stockpile some up at the NJAA for folks who are interested. I know many non-amateur astronomers are saying "Huh? What's that?" The best way to describe Light Pollution is to give you a couple of examples. While driving on any highway or road at night, do you have to squint from the glare as you approach street lights? Does the street light in front of your house shine into your windows to the point where you need the blinds down to sleep at night? Does your neighbors light on his back porch light up YOUR back yard ? When you look up at the sky on a cloudy night, can you see the clouds? Well if you've answered yes to any of these questions you've experienced light pollution.
Light Pollution Authority Home Page - Www.darksky.org
light pollution destroys the night sky. light pollution. What is itany way? Have you had a problem with light pollution? Of course.
http://www.darksky.org/
New England Light Pollution Advisory Group (NELPAG)
The New England light pollution Advisory Group. The New England light pollution Advisory Group (NELPAG) is a volunteer group founded during the autumn of 1993 for the
http://cfa-www.harvard.edu/~graff/nelpag.html

Extractions: The New England Light Pollution Advisory Group (NELPAG) A big role of NELPAG has been providing information through this Website since early 1995, with hundreds of accesses to this page being logged every week for the past couple of years (as of August 1997, we counted more than 47,000 accesses to this page; our best week so far was the one ending 1997 May 4, when 766 accesses to this page were recorded in that week alone). [As of August 1999, we are still getting 400-600 accesses per week, with over 100,000 estimated accesses to these NELPAG web pages since 1995.] We have found that there is a great public demand for information on outdoor-lighting issues, and that there has been unfortunately a great dearth of sources that the interested individual can seek out. It should not be surprising, then, that we have received high praise from many people around the world for the information provided here. Imagine children growing up without being allowed to see trees or birds (or any other aspect of nature): now, how is this any different from preventing our children from seeing the stars?! But by our thoughtless erection of outdoor lights everywhere - without consideration of glare and light trespass, without consideration of safety, without consideration of the right to privacy, and without consideration of the energy waste and the waste of taxpayer dollars - we are making it so that a very small percentage of children are able to grow up in the world today with the ability to see and ponder the wonders of our beautiful starry night sky. Indeed, after a full century now of outdoor electrical lighting, one must wonder what a lot of the lighting manufacturers and installers were
Light Pollution And Narrow-Band Filters
Article by Dave Knisely of the Prairie Astronomy Club.
http://www.prairieastronomyclub.org/filters.htm

Extractions: by Dave Knisely There are a number of different filters available on the market today for improving the views of various Deep-Sky objects, with most coming in one of three classes: 1. Broad-Band "light pollution" filters, 2. Narrow-Band "Nebula" filters, and 3: Line filters. The broad-band "Light Pollution Reduction" (LPR) filters are designed to improve the visibility of a variety of Deep-Sky objects by blocking out the common Mercury vapor, Sodium, and some other emission lines from man-made or natural sources which contribute to light pollution, while letting through a broad range of other more useful wavelengths. Since the eye is mainly a "contrast detector", this selective screening out of some of the background skyglow increases the contrast and helps Deep-sky objects stand out more noticably. While these filters do not eliminate the effects of light pollution or make the objects brighter, in many cases, these filters can improve the visibility of some deep-sky objects to at least some degree. In addition, larger versions of these broadband filters which fit over camera lenses can be somewhat useful for photography of wide star fields when some skyglow is present. For recommendations, I like the Lumicon UHC or Orion Ultrablock (whichever is less expensive at the time), and the Lumicon OIII, but remember to use them with an eye that is properly dark adapted and employ averted vision. Filters won't make the objects brighter, but in many cases, they will make many of them a lot easier to see. Have fun!
Czech Republic Enacts World's First National Light Pollution Law
This news was announced today at the annual conference of the International DarkSky Association (IDA) in Tucson, Arizona. to enact national legislation aimed at eliminating light pollution. Known as the "Protection of
http://www.space.com/spacewatch/skies_czech_020318.html

Extractions: Known as the "Protection of the Atmosphere Act," the bill passed both houses of parliament (Chamber of Deputies and Senate) and was signed into law by President Vaclav Havel on February 27, 2002. It takes effect June 1, 2002, and addresses light and other kinds of air pollution. This news was announced Monday at the annual conference of the International Dark-Sky Association (IDA) in Tucson, Arizona. The group, which has grown to more than 4,000 members in 69 countries across the globe since 1988, works to combat light pollution to preserve and protect the nocturnal environment. Dr. David L. Crawford, astronomer and volunteer executive director of the IDA, views the Czech Republic legislation as "a great leap forward" in combating light pollution around the globe. "We applaud the Czechs and are committed to helping other governments enact similar legislation," Crawford said. "Fully shielded light fixtures not only help preserve the beauty of the starry sky, but they also illuminate more efficiently and allow people to see better at night."
Mainpage - Light Pollution In Italy - Pierantonio Cinzano Web Pages
Scientific data, informations, atlases and other on light pollution,night sky brightness,skyglow, nightime lights,naked eye visible stars,limiting magnitude
http://debora.pd.astro.it/cinzano/en/

Extractions: by Pierantonio Cinzano Italiano Introduction to light pollution Italian sources of light pollution ... University of Padua All rights reserved Light pollution is the alteration of natural light levels in the outdoor environment due to manmade light sources. Reported adverse effects of light pollution involve the animal kingdom, the vegetable kingdom and mankind. One of the most noticeable effects of light pollution is the increase in night sky brightness. The light wasted upward by the night-time outdoor lighting, in facts, lights up the atmospheric particles and molecules producing a luminous background which obstructs the vision of the night sky. This causes the loss of perception of the Universe where we live. This Web Site has the purposes to give you information on the problem of light pollution in Italy and on its possible solutions. The Proceedings of the Convention "Light Pollution and the Protection of the Night Environment - Venice: let's save the night" are collected in a book of 356 pages, edited by Pierantonio Cinzano and published by the Light Pollution Science and Technology Institute (ISTIL) with the support of UNESCO-ROSTE. The book reviews the many aspects of light pollution with a simple language through contributions of authors of international relevance: the importance of stargazing to man throughout the centuries, the situation of the night sky in Europe and Italy, ecological consequences of artificial night lighting, teaching light pollution at school, technical measures for an effective limitation of its effects, controlling light pollution in Eastern Europe and much more.
The Light Pollution Authority - Www.darksky.org
International DarkSky Association To preserve and protect the nighttime environmentand our heritage of dark skies through quality outdoor lighting. .
http://www.darksky.org/ida/
Utah Skies Astronomy Web Pages | The Amateur Astronomer's Resource
A very comprehensive collection of information useful and interesting to amateur astronomers, especially those located in Utah. Includes events, news, data and reference materials, and a weekly viewing conditions forecast. Has a special section about light pollution.
http://www.utahskies.org/
The Night Sky In The World
The night sky in the World DMSP satellite monitoring of the artificial nightsky brightness and the stellar visibility - light pollution - sky glow.
http://www.inquinamentoluminoso.it/dmsp/

Extractions: Istituto di Scienza e Tecnologia dell'Inquinamento Luminoso Light Pollution Science and Technology Institute The night sky in the World Home Page How we surveil the situation of the night sky with satellites The DMSP satellite and its Operational Linescan System The World Atlas of sea level artificial night sky brightness ... The night sky live All rights reserved The night sky in the World Satellite monitoring of the artificial night sky brightness and the stellar visibility The interest for the protection of the night sky from light pollution is growing every day. A global scale periodic monitoring of the situation is necessary. Nighttime images of the Earth at night have been obtained from the Defense Metereological Satellite Program (DMSP) of the US Air Force since early '70. The first global image was obtained by Woodruff Sullivan in late '80. These images only showed the geographic distribution of the sources on the Earth surface because the satellite detectors were saturated by the strong flux emitted by them and no quantitative measurements were possible. Since 1998 unsaturated data become available, allowing quantitative measurements of the upward light flux emitted by sources.
CNN.com - Light Pollution Clouds HK's Night Sky - March 13, 2002
http://cnn.com/2002/TECH/science/03/13/hk.light/index.html

Extractions: (CNN) "Once upon a time there was a beautiful princess, Zhinu, who was a weaver with goddess-like powers. Zhinu met Nuilang, a herdsman and they fell madly in love. So happy were they together, that Zhinu began to neglect her work. As a punishment, the gods placed the princess on one side of the sky, and her lover on the other between them lay a river of stars they could not cross." So goes a version of 'The Princess and The Herdsman', a Chinese fairy tale based on two stars on opposite sides of Tian He the Milky Way. The two stars are actually Vega (the princess) and Altair, while Tian He translates to 'the Heavenly River'. But in Hong Kong, astronomers wishing to observe the celestial bodies must travel to a remote village at the dead of night. Some are even forced to rent top-floor apartments in Hong Kong's New Territories to gaze at the stars.
Light Pollution Resources
excessive and misdirected lighting, known by the popular term "light pollution." This rape of the sky's quiet majesty is Yet the problem of light pollution is easily remedied
http://maple.lemoyne.edu/~mcmahon/lp.html

Extractions: Saving the Night Theft is occurring nightly before our very eyes. Increasingly, our dark nocturnal canopy is falling victim to the predatory glare of excessive and misdirected lighting, known by the popular term "light pollution." This rape of the sky's quiet majesty is not just a problem of aesthetics, however; wasted light costs us money, contributes to air pollution, compromises safety and security, intrudes onto our property, and invades our privacy. And although the solution is really quite simple, it will take a concerted and cooperative effort by all of us to address the situation properly. The culprit in this luminous larceny is misdirected light, illumination gone astray. Light intentionally directed upward, often seen lighting billboards and public buildings, is the worst offender since much of it simply splashes beyond its intended target. Other instances of misdirected lighting result from poorly shielded fixtures that still allow light to escape upward and horizontally. Such illumination not only destroys the beauty of the starry night but actually hinders the eye's ability to see by creating both glare and deep, dark shadows. In fact, poorly designed lighting installation along thoroughfares may affect a driver's vision in much the same way as do oncoming highbeam headlights.
Amateur Observers' Society Of New York
Established in 1965, the AOS sponsors stargazing activities across Long Island, New York, and lobbies for the reduction of light pollution on the Island and throughout the state.
http://www.benjaminsweb.com/aos

Extractions: http://www.sunynassau.edu/homepage.asp to determine college availability WHO WE ARE: The Amateur Observers' Society of New York, established in 1965, was created in order to bring together astronomy enthusiasts and people of all ages who enjoy sharing their fascination with anything related to astronomy. Our philosophy is simple: You don't need a telescope to wonder, or join. The only dumb question is the one you don't ask. And, life is about helping others, learning, doing, fulfillment and, most of all, having lots of FUN! WHAT WE DO: Over the years our activities have grown with our membership. In addition to sponsoring numerous
Prairie Astronomy Club: Light Pollution Fact Sheet
light pollution Fact Sheet. Our goal built. This telescope is severelylimited in its research capabilities because of light pollution. 1
http://www.prairieastronomyclub.org/light.htm

Extractions: Our goal is to encourage quality lighting! We are NOT against night lighting. The 100 inch diameter telescope at Mt. Wilson Observatory, which overlooks the Los Angelas basin, is only 11% as effective as when it was built. This telescope is severely limited in its research capabilities because of light pollution. 1 billion dollars ($1,000,000,000) is wasted each year in the United States by lighting up the sky. This wasted light serves no purpose for safety, security or utility......it is simply wasted energy! We want to start NOW to preserve as best as we can the sky above Holmes Park and Hyde Observatory. Components of light pollution include: Light trespass - Spill light coming from another property. Glare - From seeing the bright filament of an unshielded light, troublesome and dangerous. Clutter - Excessive grouping of lights, causes confusion as well. Energy waste - Costing us over One Billion Dollars a year in the U.S.A. alone. Urban sky glow - Domes of light over cities. Blocks out faint objects such as the Milky Way, Nebula and distant galaxies. Only a few bright stars can be seen from the city. Low Pressure Sodium (LPS) fixture produces a yellow tint.
The Anti-Light Pollution Section Of The Astronomical Society Of Denmark (AS-ALS)
A webpage explaining the history and objectives of the organisation, and how to become a member.
http://as.dsri.dk/sect/light.html

Extractions: The Astronomical Societys Anti-lightpollution Section (AS-ALS) was established in 1992, but lightpollution has been discussed by professional and amateur astronomers at least since the beginning of the 1980'ties, primarily in the USA. Goal: The section contributes to the fight against lightpollution in Denmark with the purpose to secure everyones possibility to enjoy and study the night sky. The section has published a number of papers on the subject of lightpollution, which all members joining the section will recieve and the section also publishes a newsletter which is sent to all members of the section. The members furthermore recieve invitations to talks arranged by the section alone or in coorporation with others and the section also produces information-sheets, booklets, folders, poster-exhibitions and T-shirts which can be ordered/bought/rented or lended. The section also compiles a library, a slide collection and a database containing addresses of companies, organisations and authorities relevant for the work of the section. From the work of the section in 1993 the following activities can be mentioned: One member has distributed a folder about lightpollution at a public observatory. Another member has translated and adapted information-sheets from English to Danish. A third member has arranged a meeting, where an invited speaker gave a talk including a slide-show about lightpollution. A fourth member took advantage of the expected meteor-shower in august and obtained some media-coverage with a suggestion about turning of the street-lights in Copenhagen. A member has been in contact with representatives for an electricity company and with mayors and technical staff from some communities. A member has participated in a nordic outdoor lighting cogress with a poster-exhibition and distribution of different folders. Generally the level of activity is 100% dependant on the effort made by the individual members.
State Commission Reports On Light Pollution.
on. light pollution. The causes of light pollution are many and the effectscan be glare, energy waste, light trespass (nuisance light) and sky glow.
http://www.monmouth.com/~ksears/litepol2.htm

Extractions: Eatontown Environmental Commission member John Batinsey, who chaired the Light Pollution Study Commission, suggests contacting the Governor's office or your legislators to encourage action on the recommendations in the report. He says that this year the NJ DOT revised its roadway lighting policy and is now maximizing the use of cutoff luminaires to improve the quality of lighting. The New Jersey Highway Authority is presently installing only cutoff lighting as new installations and replacements on the Garden State Parkway. The New Jersey Turnpike Authority continues to maintain its policy of using cutoff or equivalent luminaires. In 1993, the state legislature established the New Jersey Light Pollution Study Commission to consider the problem of light pollution, the potential for monetary savings and other benefits from reducing light pollution, and the recommended steps to address this issue. The first meeting of the Commission was held March 1995 and in April 1996 it submitted its report to the Governor and legislature. The report's introduction states: The causes of light pollution are many and the effects can be glare, energy waste, light trespass (nuisance light) and sky glow. Most glare can and should be prevented. Glare affects the ability of drivers to perceive objects or obstructions clearly. Particularly sensitive to this problem are elderly drivers.
Ted's Astropix Main Page
Lunar, planetary, comets, deep sky objects, total solar eclipse photography, lunar eclipse photography and CCD imaging along with an essay on light pollution.
http://www.saker.com/astropix/page1.htm

Extractions: Thank you for reading my diatribe . Glad I got that off my chest. Now for the pictures!!! Lunar Planetary Comets , and Deep Sky Objects: Photographs taken from highly light polluted observing sites (unless otherwise indicated). Solar Eclipse Photography: A Primer on Solar Eclipses and Solar Eclipse Videography Total Solar Eclipse of 11 August 1999 CCD From the Ground Up How I joined the CCD revolution. Adapted from a presentation delivered to a meeting of the Columbus Astronomical Society on February 12, 2000. CCD images taken with a Cookbook 245 camera I built! I hope you enjoy viewing these pictures as much as I did taking them. When you are done examining the image, click on the "back" button of your browser to return to this page.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

1-20 of 171 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Next 20