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In 1964/5, Penzias and Wilson discovered that the earth was bathed in a faint microwave radiation, apparently coming from the most distant observable regions of the universe, and this earned them the Nobel Prize for Physics in 1978.1 This Cosmic Microwave Background (CMB) comes from all directions in space and has a characteristic temperature.2,3 While the discovery of the CMB has been called a successful prediction of the big bang model,4 it is actually a problem for the big bang. This is because the precisely uniform temperature of the CMB creates a light-travel–time problem for big bang models of the origin of the universe. In addition to skyglow, light trespass can impact observations when artificial light directly enters the tube of the telescope and is reflected from non-optical surfaces until it eventually reaches the eyepiece. This direct form of light pollution causes a glow across the field of view which reduces contrast. Light trespass also makes it hard for a visual observer to become sufficiently dark adapted. The usual measures to reduce this glare, if reducing the light directly is not an option, include flocking the telescope tube and accessories to reduce reflection, and putting a light shield (also usable as a dew shield) on the telescope to reduce light entering from angles other than those near the target. Under these conditions, some astronomers prefer to observe under a black cloth to ensure maximum dark adaptation. In one Italian regional lighting code this effect of stray light is defined as “optical pollution”[citation needed], due to the fact that there is a direct path from the light source to the “optic” – the observer’s eye or telescope. Some lights get extra bright while others run dim. Bulbs may even be popping, and an electronic appliance or two may have died recently. This is a condition that will continue to be destructive to equipment in you home. It is from a Bad main neutral connection (or a bad neutral that is shared by just Two circuits). What you should do: If your car isn’t feeling jerky or strange when the check engine light comes on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you’ve already made it to the store, you might as well just replace it. While not car-threatening, it’s good to take care of this right away to improve gas mileage. In light of all this potential, why have organizations been so slow to embrace MOOCs? Here I’ll draw on data from more than 28,000 learners in 127 countries as well as survey and interview results to answer that question and to offer insights into how companies can better capitalize on this form of learning. A first step is to consider the limitations for application, for which a consideration of language will be helpful. As the above discussion in Section 3 makes clear, light pollution is not simply a description of certain environmental impacts, but also an evaluation of the effects of nighttime lighting technologies and infrastructure. Light pollution is both a descriptive statement and a value judgment with normative implications—it categorizes certain uses and types of lighting as bad or wrong. Historically lighting often functioned as a form of safety and protection at night, but there has been a reversal. Now humans, animals, and the night sky require protection from artificial light. Importantly, articulating this shift in perspective via the notion of light as a pollutant adds a moral level to an otherwise technical discussion of illumination. But, in considering the creation of a moral space for deliberation, we should reflect on the implications of this label. Garrard (2004 Garrard, G. (2004). Ecocriticism. New York, NY: Routledge. [Google Scholar]), in assessing Rachel Carson’s iconic Silent Spring, notes that one of the book’s lasting achievements was expanding what was previously seen as a scientific issue (the usage of pesticides) into a social problem. By this, Garrard is referring to the categorization of pesticides as pollution. This is because ‘pollution’ does not name an actual thing, but rather provides an implicit normative claim that ‘too much of something is present in the environment, usually in the wrong place’ (2004 Garrard, G. (2004). Ecocriticism. New York, NY: Routledge. [Google Scholar], p. 6). Carson helped to reframe perspectives, allowing the usage of pesticides to be contested morally and politically. The same can be said of the concept of light pollution, generally considered: it breaks with the historical meanings and values associated with nighttime lighting, reframing discussions as a debate over how we ought to preserve and protect the night sky, as well as protect ourselves and ecosystems, from excess artificial light. Section 2 discusses the moral and political significance of framing problems, in relation to the novel environmental problem of excess artificial nighttime lighting in cities. Section 3 then analyzes the concept of light pollution in detail. Here, both the origins of the concept and its current manifestations are presented, in order to provide a more comprehensive understanding of light pollution. Section 4 returns to the question of how light pollution frames concerns and possible responses, and discusses two interrelated questions: the potential limitations of the concept as a normative or prescriptive tool, and the ambiguities and inconsistencies in its practical application that require clarification. Thus, first steps are taken in dissecting the ethical significance of the concept of light pollution and the role it can play in addressing the adverse effects of artificial nighttime lighting. Attaching the language and connotations of pollution to nighttime lighting is effective, but may also set boundaries on possible solutions. This is a very specific answer to the question of how much light is appropriate, which comes with limitations. As a moral concept, light pollution can tell us what bad lighting is, but says relatively little about what good lighting is. Because of the focus on the (adverse) causes and effects of artificial nighttime lighting, the concept is limited in its capacity to inform choices within the realm good lighting, especially in cities where there are other values at play. Light pollution says very little about artificial nighttime illumination deemed to be within the acceptable limits of polluting, or the many values and needs strived for therein (for example, esthetics and nightlife). Thus, there are limits to the capacity of light pollution to inform moral evaluations, as it frames decisions as questions about acceptable levels of polluting. Light pollution is a broad term that refers to multiple problems, all of which are caused by inefficient, unappealing, or (arguably) unnecessary use of artificial light. Specific categories of light pollution include light trespass, over-illumination, glare, light clutter, and skyglow. A single offending light source often falls into more than one of these categories. If you are a customer of one of our electric companies, please log in or use quick access to alert us of the lighting problem. 1. FPL does not own or maintain streetlights on aluminum poles located on major highways, like I-95 or the Florida Turnpike. The City of Winnipeg has adopted the latest Transportation Association of Canada’s Street Lighting Design Guide that stipulates the light levels for the City’s streets. This is the criteria that defines the number of lights and the wattage used to illuminate City streets. The main purpose of street lighting is to “provide an adequate visual environment for road users to safely use the road system during hours of darkness.” In September 2009, the 9th European Dark-Sky Symposium in Armagh, Northern Ireland had a session on the environmental effects of light at night (LAN). It dealt with bats, turtles, the “hidden” harms of LAN, and many other topics.[76] The environmental effects of LAN were mentioned as early as 1897, in a Los Angeles Times article. The following is an excerpt from that article, called “Electricity and English songbirds”: VigRX Plus BioBelt Atlant Gel Penigen 500 el macho Celuraid Muscle Celuraid Muscle Eron Plus vigrx sterydy